Jeep backfiring and missing All the resot of the 5 miles home sputtering and backfiring out the pipe. Running rough, yes, O2s could be the culprit, but for backfires I'd lean more towards an exhaust leak. It One of the weird things is it only happens when the jeep is warmed up, I can run it hard and it will act just fine until its warmed up then it just loses power and starts studdering. No change. The engine may use an ignition coil and distributor instead of a coil pack for each cylinder. It will nearly die, but then will backfire out the intake (I can feel the pop in the gas pedal), and then take off like crazy. Backfiring through the Intake. Yes im a new jeep owner & I love it. Here are the main reasons why your Jeep Grand Cherokee would be backfiring: 1. I have a 98 ZJ, with the 4. After work I started it up, and it ran like utter crap, it wasn't backfiring mind you, but it was barely running at all, just misfiring, and stumbling like crazy, about 5-10 minutes later it started backfiring and what not again, on top of the stumble/misfire. I spoke to MSD several times and there is no way to adjust the vacuum advance on this distributor. At first it would only do it Not sure if my Jeep is backfiring or missing, but it happens on cold starts. 55:1 Gears, Power-Trax No-Slip Locker in rear, Spartan Locker in Front, Monroe Air Shocks, Hi Country front tow hook brackets, Black with Gray Leather, 235X75R15 Goodyear Wrangler Tires, Putco Headlight Harness w/Silverstar bulbs, 142,000 miles. Missing under load is usually a secondary ignition problems like a coil or plug, turning od off lowers the load We put a new ignition coil, rotor, distributor cap, plug wires and plugs on it when he bought it. Stripped jeep down to a tub sitting on the frame. he then replaced the throttle position sensor cj5 owners, or everyone question New to the forum but owned jeeps since 1947. Here are the main reasons why your Jeep Wrangler would be backfiring: 1. if the idle is to fast when trying to set timing or air/fuel mixtures you can't get the oil pressure would flutter sometimes and stay barely above 0 while idling and occasionally while running when it started to lose power. Pulled all the plugs, checked wires/cap/rotor, everything ok. after the motor warms up a bit (about 45 sec. Tags rough idle. Backfiring is definitely timing related. I also am having them look into an issue that’s been happening over the last few months. It was the Ignition Coil. i bought this renix xj with a thrown rod threw the 4. Usually, the colder the ambient temp, the more cylinders missing. Sometimes (50-60% of the time) when I am driving under an acceleration or load situation it After trying to start the truck, it would start, run like absolute garbage while backfiring through the intake and die. so he then cleaned the entire fuel system, replaced the injectors, spark plugs, along with the rotor cap, wires, and rotor button. The '97 Cherokee Country, 4. Yet another sputtering, hitching, missing, and backfiring thread!! Jump to Latest 528 views 1 reply I have a 79 CJ7 w/304 and Holley 4bbl, headers, etc. A bit of a longer crank then usual. Don't throw money into sensors, they are false codes. I checked all the Jeep - Hardcore Tech TBI 350 backfiring. For a little while. Jump to Latest 588 views 3 replies Started idleing a little off, just a little rough, next time I tried to start it, it was real bad, requiring %50 throttle to stay running, sounded like it was missing on at least 2 holes. Got home and checked fluids, wasn't sure what was up so I kind of just left it alone. It falls on face and you actually Loose ground. Here are the main reasons why your Jeep Cherokee would be backfiring: 1. but while cruising it runs roughly. 2 in my 98 tsi. Here you'll find a treasure trove of knowledge amongst some of the most knowledgable minds in the TJ community. naugs43 Discussion Starter · Mar I have a 1997 TJ, build date 2/96, with a 2. 0 6cyl. Unless the OP is driving around at WOT all day, the heat build up is not going to cause a backfire. I realize the problem could still be in the opda and the cam sensor or crank sensor. Thanx to a good hearted subscriber CJ medivac. Want Answer 0. With the Indiana winters, these past few weeks have been rather chilly. Backfiring through Intake, Real Bad Hesitation. I have been having an issue where the engine will backfire after it is warmed up and running fine. I initially thought it was 180 out but it doesn’t seem to be. Model Specific Jeep Discussions. I warm it up and it takes off great as long as the rpm's are up. Some backfiring throught the Carb and popping. N. Jump to Latest 4. Everytime I start in this thread in this sub-forum in the entire site. I sold my Porsche carrera for this older used jeep & I can work on this baby. Backfiring thru Intake! Bogging! HELP! com/topic/236-how-to-test-and-change-valve-springs-on-a-jeep-40l-or-25l-engine/ Also missing from the fuel pump housing was the pre-filter. 2. I'm going to try routing it a bit differently, but still, I suspect this will be a Hi guys, new to the site but on my 2nd wrangler. It starts up and seems to idle ok, but will not accelerate at all without backfiring through the intake and missing badly. Ignition System. If you blip throttle to take off it stumbles and cuts out and backfires. 0 ltr 2 wheel drive that I am having problems backfiring and missing @2000 rpm. 0 liter straight six w/ automatic trans. 0 5spd Hello, I changed my spark plugs yesterday and did a transmission fluid change. The cause of a misfire is often from a loss of 1986 CJ7 2. The Jeep Mechanic can help with your vehicle's backfiring and dying issue. to a min. It sounds like muffled pops. It will still drive, maybe calm for a brief moment or two and then start bucking again. Until I pulled the distributor and started checking for worn bushings ect. YJ Wrangler Technical Forum. the 2. Start the truck, take a reading, also give it some throttle, and watch the gauge. Posted by keithcindy38 on Dec 20, 2010. 5l Jeep TJ that has recently begun to give me problems. It is It would just stall, and if it had enough momentum, it would pick back up again, the engine would start, it'd backfire, and we'd be moving back down the road again. 5 5 Speed. then went away and was replaced by a misfiring and really crappy-running Jeep. It should be about 40-45 psi and it should hold steady. I’ll attach a video of it here for you to hear. Checked spark, ok. 80k miles on vehicle. 0L with a five speed manual trans. 1994 jeep yj with a 2. If and when the backfiring starts to happen usually I The Jeep runs great when timed at 10* intial with the 2 heavy silver springs and the 18* bushing. Wrangler YJ (Model years 1987–1996) YJ Technical Discussion. Its a trail only rig and obd2 plug is gone so I have no way to check codes. A forum community dedicated to all jeep owners and enthusiasts. Unfortunately this particular howell version doesn’t have an adjustable While driving, when the truck was cold, it would be fine. It still idles well. Your Jeep Cherokee’s ignition system consists of spark plugs and ignition coil packs. Jump to Latest Interested in helping us test a way to shape the future of forums? Go here to find out more! 21 - Jeep Wrangler Backfiring: Common Causes. Reading other threads, it seems some folks have corrected this condition by reducing fuel pressure. I now experience this within the first minute of driving or sitting at idle, engine cold or hot. 030 over, using comp cams 68-235-4 cam (210int/218exh), icon forged pistons (IC945-030 10. No idea how many miles are on the engine though - speedometer was missing when bought it, and the jeep originally came with the 304, not 258. 8cc), stock intake for now, 24lb injectors@49psi, 50 psi regulator, im sure im missing a detail or two but hopefully that narrows it down enough to help with my hardcore backfiring Jump to Latest 640 views 6 replies 5 participants last post by sgilmo2 May 8, 2007 Customer: 2000 jeep wrangler 4. 1 2. Drove 150 miles home yesterday and it would misfire and buck in the mid 2k rpm range, but ran perfect above 3k rpm. The dealership said it’s backfiring and If it checks out mechanically move on to fuel pressure, PCM, etc. If the computer can't access the O2 sensor due to a failed fuse, damaged wires or wire connector, or for other reasons, the computer can't be more specific in the fault codes. I started Jeep Wrangler TJ Forum to serve as a resource for TJ owners around the world. Fuel pressure is perfect, 32psi @ idle, and 39psi with the vacuum line unhooked. Disconnect battery for a minute and it would start and repeat again. Mine did that and it had multiple broken or missing vacuum lines 1994 jeep wrangler backfiring missing, The problem is one of your coil packs is bad. 0 at the dealership for some service. The guy that I bought Jeep Grand Cherokee Backfiring: Common Causes. I am at my wits end with this Here are the stats 1998 Jeep TJ 4. Jump to Latest A forum community dedicated to Jeep Cherokee owners and enthusiasts. , 1995 Jeep Wrangler S, 2. However, sometimes if I press on the throttle quickly, the engine will backfire through the intake. 1998 XJ cherokee 4. Correct me of I'm 1. 5l motor, 5-speed, non A/C and 210xxx miles. 5, 4 cyl. After about a days worth of driving, the Jeep started running rough, and then has a violent vibration when the engine is underload. 93 XJ - Misfire, Backfire, no acceleration under 3000 RPM. 1998 Jeep Wrangler is missing and backfiring constantly. i Retarded timing will also cause intake backfires if the timing is way off and at the same time as the intake valve is opening. runs great. The engine was shaking Jeep Wrangler JK: Why is My Engine Misfiring? A consistent misfire will hamper engine performance and cause drivability issues. One had the coil wire come loose & the other had blown a main fuse. If it helps to turn the Jeep off and then back on, then it definitely sounds more like an electrical component problem, like a sensor. On the way back the motor started stumbling and sputtering, then I got some backfiring out the back when I gave it some fuel. the volt meter does dance hey! Everyone made this video with the idea of sharing some info on a backfire and no start situation on a 01 Jeep Grandcherokee. But on the way to work today(25min drive) in 65 degree weather, it started backfiring as I got off the interstate. 0I6. :dunno:It does not do it all the time. Had the tune up done, and problem seems to not have changed I just recently purchased a 74 CJ5 with a 304 V8. Started back up and i took off, when after about 10 min of driving it A couple weeks ago my jeep just up and started acting like it was running out of fuel, So I tried revving it up to clear it out and then it backfired and kept on missing. 1994 jeep wrangler backfiring missing, The problem is one of your coil packs is bad. Engine Missing/Backfiring. ZJ Grand Cherokee Forum. The 1990 is giving me some problem. GroundClearance · Registered. After a while, it just wouldn't restart. And, how would you like to connect with the Mechanic - phone call or online chat? Customer: missing time from work, or expensive consults. just replaced IAC because of idle problems and it had the miss but no backfire. Then when under load it wants to surge. Replaced all of the usual ignition parts associated with rough running and backfire only to get worse as I added new components. it will not rev above the idle speed. Check engine light starts flashing so I pull over. The tach indicates a rpm fluctuates also. On the way home it ran perfect for about 2 hours then it began missing (hesitating) at high speeds (installed a new fuel filter in parts store parking lot) and this got progressively worse to the point where I would have to pull over and let it sit for 10 minutes Timing is computer controlled. Was able to keep pulling over and starting it up and make it home. Garagecouple. Every time I start the vehicle about 15 seconds later it starts missing or backfiring and after about 4-6 seconds clears right up and doesn't do it again until the next Jeep Wrangler Forums. Come join the discussion about performance, engine swaps, modifications, classifieds, troubleshooting, maintenance, and more! Like the title says, 97 tj with a 4. 1 all of a sudden, my 1979 cj 5 with a 304 amc has started to backfire out of the passenger side only. A few weeks ago it started missing badly, bucking and backfiring. I am very confused at what the issue could be and was wondering if anybody else had a similar issue. Initially, the backfiring sounded like popcorn popping and was muffled. Jump to Latest 21 - 27 of 27 Posts. 0 engine and auto transmission started stumbling, hesitating, missing and when I give it more gas, spits or backfires before accelerating. Your Jeep Wrangler’s ignition system consists of spark plugs and ignition coil packs. This only happens under load around town at lower RPM settings. 0 block (#6cyl) sympoms inclued rough idle, engine shakes, im not to sure if it is miss firing or not. There is not an adjustable Allen nut in the nipple as some suggest. With the OBD-II 4. 1986 CJ7 2. Missing Backfiring and More Fun! Jump to Latest Follow 1K views I have a 2001 TJ Sahara Canadian Built (not a problem) but is doing the same thing especially after a week ago I lost my gas cap, perhaps got water in the tank (highly suspect) took for a ride by the dealership and spent $555. 0l 5 Hi guys, new to the site but on my 2nd wrangler. These are consistent cold or at operating temp. Customer: I have a 94 Jeep Wrangler that bucks and backfires under acceleration. When it does this and you try to give it gas I can feel it try to speed up but it backfires, jumps and sputters, No CEL, no codes, nothing to help with the diagnosis. Bought the Jeep from original owner just over a year It shifted smoothly from gear to gear and steady state cruising revealed no signs of that cursed jerking and feeling like the engine was cutting in and out. Jeep only has 80k miles on it but I cannot figure this problem out. I As title states, I have a 2004 Jeep Grand Cherokee with the 4. However, I have also noticed times when it was idling OK, but misfired when accelerating. Jump to Latest 1. The engine runs fine, has plenty of power (for a TBI 2. hello! I've been using this forum to build my stroker and now am a part of it! I built a 4. i have new header gaskets, wires, and plugs. Sometimes it doesn't do it at all. 526 Views 2 Replies 3 Participants Last post by tjwalker, Mar 6, 2010. 5 minutes later the motor stalled and wouldnt start back. At first it would only do it I've been having an off and on problem with my jeep backfiring, now that the weather is getting colder it's become a pretty much every day thing. It ran great :2thumbsup: then i ran out of gas then it stated backfiring, figured maybe bad gas so i ran it dry and put different gas in it but it still douse the same thing, it starts fine and idles good but wonce you hit the gas pedal it seams to Hello I have a 98 ZJ 4. XJ Cherokee Technical Forum. 12 for a glorified clean job where injectors, throttle body, Emissions system, were all cleaned and new spark plugs added and sent me home with When the engine is cold it runs great, as it warms up it starts to backfire out the intake on acceleration. The Jeep hadn't been run in ~9 hrs, and it was 80 degrees here today, and it sat in the sun, so that seems consistent with what is likely the actual coolant temp. It does this for about 10 miles home on backroads and I stop and fill the tank to almost full. drove for over an hour and 3. Reach the bottom and the Jeep won’t accelerate normally. Jeep Cherokee Backfiring: Common Causes. 0 has been backfiring and idling really rough for the past week. After 15 minutes or so starts bucking ,backfiring and missing. Read full answer. . Since I bought this Jeep; I have replaced the head, PCM, Coolant sensor, fuel pump and filter, IAC, coil, distributor cap, plugs, crankshaft position sensor, mat sensor, oxygen sensor, MAP sensor, throttle position sensor, and cleaned all grounds. At first, I could get it to stop while driving by throwing it Couple days ago my jeep had one miss at 2500 rpm at WOT. Backfiring is Distributor (and pickup sensor sold as a unit) or timing chain. It is maybe a little better after the map sensor (at least now it will idle when hot) but still basicly undriveable. Jeep Wrangler Forums. the issue I have is that the jeep will not run correctly it will miss or backfire on occasion and has no acceleration if I were to press the throttle to the floor it would take of and then sound like it stalls but if I let off the gas it will stop and go back to idle if I slowly get on the gas it will move then take off a little but then will bog out the more gas Okay I Have A 2000 Jeep Cherokee It's A 2. If I advance the timing to the point that it barely runs at idle, it preforms much better when I start He noticed how ever there was a substance in the gas tank that appeared to be sugar. I'm doubtful that an O2 would cause backfiring. No more then 5-degrees. You can run a motor so lean (18-20 AFR) that it will misfire (low load), but never backfire. Try to get it to backfire and stall, and see if the Jeep Cherokee & Comanche Forums. No popping or mild Backfiring and missing 4 cyl - 1997 Jeep Wrangler. I have a 1997 Sahara with the 4. Last Night I Was Driving Home And It Randomly Started Jerking Like It Was Going To Die, 1979 Jeep CJ7: V8 304 runs rough once it warms up. A www. Would only happen under a load before, but now slight backfire in the 1500-2800rpm range in neutral. 0L, Auto Trans (AW-4), 4WD Command-Trac NP231, 3. New cap, rotor, cam pick-up sensor, wires, temp sensor, MAP Sensor, fuel line regulator. Make sure what you are hearing is backfiring and not missing. Mainly it backfire missing. Mechanic's Assistant chat. now it seems the idle is good but the miss is mstill there and now it started backfiring. TJ Wrangler Technical Forum. 5 litre runs fine when cold. It also idles I have a 5. If you Trimmed back the line, and replaced the pressure regulator. Hmmm. So if I engine brake from a hill the engine backfires non stop, and if I am letting off the gas on the highway, I can smell the exhaust (its constant, until I I have a 1997 2. Swapped out full intake manifold with throttle body , fuel rail, sensors and injectors. This is different. I changed the coil that desperately needed to be changed and thought I was in the As far as I can tell the valve timing is correct. I bought it about 1 month ago and it ran fine. It has been sitting since Jan. I may be missing a vac Jeep Wrangler Forums. Comment; Flag; More. Come join the discussion about performance, modifications, classifieds, troubleshooting, maintenance, and more for the SJ, XJ, KJ, KK, KL series and Grand Cherokee! Once I chnage the tbi. Original Post: Does reporting a misfire on 6 mean it’s not missing on any other cylinders? Thanks, Ian Sent from my iPhone using 1994 jeep yj with a 2. When the engine is shut off, following a short delay I get a strong exhaust backfire. So I took the jeep to get a load of wood pellets, 10mi round trip. I checked the compression on each cylinder they are all Just got this 1998 Cherokee xj 4. Print this page; Share this page; Add Your Answer Ad. , 2010 Chrysler 300 Touring/Signature Edition, 2003 2500 SLT, QC, LB, ETH, DEE, 2006 Winnebago Sightseer 29R (F53/V10/5spd TQShift) 2002 Nissan Xterra 4WD/V6 Other: 2010 Kubota MX4700 with FEL, 1977 Kubota L185. It will run fine about 50% of the time I'm driving, the other 50% it will run like sh*t. It started 2 months ago as an occasional sputter but later started backfiring as well. The marks used to be spread across. When you get up towards the higher RPMs in any gear (above 2200), it starts sputtering, missing, popping, etc. 1 i need some help iv been back and forth with this. Jeep Grand Cherokee & Commander Forums. I did notice a slight amount of play on the rotor. New oil pressure sensor seems to have fixed that issue and it ran for like 15 miles and it started losing power and backfiring. after diagnosing for a few minutes I came up with the problem an fixed it. I am having a few issues with it right now, the main 2 being a cold start problem and backfiring when I'm accelerating. Backfiring/Missing 4. So far we've dropped the fuel tank (2) checked the fuel pickup. It’s missing and won’t go above 2 grand rpms. should be 650 to 750 rpm's. i read it could possible be the ignition module going bad. Give it gas while it's running rough and it smooths out--no backfiring, nothing. Was ready to start pulling intake and then the heads. About a week after I purchased it, it started running poorly. Once it hits 3K I let off gas a bit and it accelerates great. I currently have 3 (2002, 1994, and 1990). I should add that it always starts right up after this. Have to rev it up to get going in first. I'm assuming from the A couple of days ago My 96 cherokee sport with 4. Seems to love it with a constant 30-50 psi oil pressure. 800 rpm's is to fast. Backfiring usually means Now what? I seem to have picked up a new gremlin- once the motor is warmed up and being driven, the jeep begins bucking or missing. About 3 weeks ago, I got off the highway and came to a red light, and the Jeep's RPMs dropped real low (maybe 250-300), shifted to neutral and tried to rev, but the revs did not change. when I have the gas to the floor and its suddering like crazy barely staying above 30 going up a hill it occasionally backfires into the intake. I did my best with the wiring (looked like spaghetti when I bought it). I just had a full tune up done, including plugs, wires, cap, and rotor, because it was running a little rough at idle, and, at times, seemed like it had no power. L Post the exact 4 digit Trouble Codes you are down loading. 2004 Tj 4. after doing all we can with Turn the key ON, and look at the reading. Under mild acceleration and steady throttle it starts to buck and surge. I have changed map sensor,cap, rotor,air filter, plugs, o2 sensor, throttle position sensor and intake temp sensor. Customer: My 1979 Jeep CJ7 V8 304 runs rough once it warms up. NEDD Advice, Rough running , missing, backfiring? Jump to Latest Follow 1K views 3 Hey guys, I'm having a hard time with a cold start on my CJ7. 0. To best explain what is going on, here is a quick background. Since this problem was not evident prior to my tune-up, and Quote Reply Topic: Missing and backfiring under load Posted: 13 June 2016 at 4:34pm: My 47 2a starts and idles fine. As of this afternoon I have a P0320 (engine speed input circuit) P0301 *and First of all, I have a 1998 Jeep Wrangler 2. The engine starts right up and idles fine. 0L, sputtering/bucking, stalling, and backfiring should always make one suspect the O2 sensors, their fuses, or O2 sensor wiring as the primary suspects. Then the engine warmed up, and it would start bucking and sputtering and backfiring a lot, and the tachometer would suddenly drop to 0rpm and then flutter around /below/ where the RPMs actually are. I self replaced a cracked exhaust manifold in my 99 TJ 4. Don’t miss out – trending topics and top threads Jeep Is Backfiring And Missing!! Jump to Latest 2K views 5 replies 3 participants last post by BlkClassic Apr 10, 2014 Been chasing backfire and miss for near 6 months since my purchase of my 70 Commando. Pulled codes again and another couple codes popped up: P0301- Cylinder 1 Misfire C3101- Unknown timing off well cause backfire, miss adjusted air/fuel mixture can cause backfire, vacuum leak can cause back fire. In each case they died & backfired at the same time. A couple seconds later RPMs went back to normal and off I go. Hi Everyone, I just dropped my 19 JLUR 2. after starting) it back fires at an idle. Follows suit when engine is running and the throttle is hit. My jeep has a missing or bucking problem, its does not do it all the time, mainly when the engine warms up, and it feels like a fuel starving problem. 0 5speed 170k Here are my issues. driven. No fault codes on the renix TBI system. Not really sure how to describe it. I apologize if there is an exact discussion with the same symptoms but I have not had much luck narrowing my search and i figured it is a good topic for my first thread. Fuel pressure was checked, and is good. On the way home it ran perfect for about 2 hours then it began missing (hesitating) at high speeds (installed a new fuel filter in parts store parking lot) and this got progressively worse to the point where I would have to pull over and let it sit for 10 minutes Hello, my 1989 YJ 4. Jump to Latest 2K views 7 replies 5 participants last post by LOWBAR Apr 22, 2008. Check your intake/exhaust manifold bolts to make sure they aren't loose, make sure your sensor grounds at the dipstick stud as well as the ground strap towards the rear of the engine connected to the firewall are clean and tight ( Cruisers Renix tips). When the Jeep sits overnight, it will misfire for a few minutes in the morning. The check engine light also came on for P0301. Clicking this will make more experts see the question and we will remind you when it gets answered. I can't get it to run to check the timing. It threw codes for. 98 xj missing,shaking and backfiring. and when I tried to fire it up this weekend all I could get was backfiring through the carb. 0l. So thanx again How can I tell what rear end I have on this "77" cj-7 304ci. Most Misfire and backfire - SOLVED!! I suspect this will be a recurring theme for this Jeep. 1K and just recently it has started backfiring through the exhaust. Thankfully I was able to get home and have not attempted to drive it anywhere since. I have an 88 cherokee 4. B A forum community dedicated to all jeep owners and enthusiasts. Joined Jul 5, 2004 · 2,776 Posts Like the title says, 97 tj with a 4. On cold starts I have noticed the Jeep is either missing or backfiring. I just cant get it stop backfiring when the vacuum line is attached. The exhaust is new from the manifold out. If I'm not on it it runs fine,just every time I floor it from a stop,or kickdown on it in any gear when it runs up to mid to high RPM it really starts breaking up. At mid to high RPM at WOT it starts breaking up,missing,feels like it is bogging down,loosing power. Initially, the backfiring sounded On cold starts I have noticed the Jeep is either missing or backfiring. Started back up and i took off, when after about 10 min of driving it 2011 Jeep Wrangler Sahara-JK, 6 spd. Hey guys, my 94 2. 5L used to just backfire in the cold weather it wasn't much of a problem if I let the jeep warm up a couple minutes before driving. I believe they are exhaust backfires You can see very slight contact marks on the very edge of the terminals. after you let off the gas, it'll backfire once or twice. Not sure if anyone else has seen this or not. Hey guys, I drive a 1992 YJ 4. Since day one I've run Rotella 15W-40 in it with Lucas stabilizer. I have a 97 wrangler with a 4. Feb 20, 2010 • 2004 Jeep Wrangler. Jump to Latest Follow 1 - 5 of 5 Posts. Have also had it backfire thru the exhaust. I’ll attach a The plug wire was wrapped with heat-shielding and had a protective boot, but still failed, and I don't think it was much more than a year old. Bought my 1985 jeep cj7 about 6 months ago not running. 5 that is), but every time I cut the engine off it'll make one loud bang through the tailpipe about 5 or 6 seconds after the engine stops. Jump to Latest 21 - 31 of 31 Posts. It was loose from the housing and there was also a 2nd pre-filter migrating around the tank. Jeep Cherokee & Comanche Forums. the Jeep will have a ton more pickup, but it will lose it after a few minutes of driving. Links for the FSM. missing, especially notable under load because it backfires into intake. Head gasket still seems to be intact too; no coolant in oil/overheating, etc. I figure they quit running because they lost electricity, but the fuel in the system managed one more bang. 0 helpful. If you don't have a meter get one. Same result, code 45, backfiring and missing at 1800 rpms. starts fine and runs good at low speeds. As soon as I hit a little incline it bogs and starts to miss. It acts like the the timing is off but when it is first driven, it runs great. it jeep backfiring My 2003 Jeep Wrangler 2. Come join the discussion about performance, engine swaps, modifications, classifieds, troubleshooting, maintenance, and more! Show Less . 2 answers. 5 litre w/110,000 miles The problem: I drove this Jeep home about 550 miles back in April. Most of my mechanical experience is working on modern 4 cyl engines with MPFI so this is new to me. Chat By chatting and providing personal info, you Thanks for the info. Worse if you stab throttle wot. Hello, I have a 1997 Jeep Wrangler recently purchased. Your Jeep Grand Cherokee’s ignition system consists of spark plugs and ignition coil packs. 6 stroker block is machined . On helping me with my jeep problems. be/tQCg-jDuzlcEpisode 2 Model Specific Jeep Discussions. Automatic. I then pulled the Just wanted to say THANK YOU for yout patience& tolerance. Missing and backfiring. After driving it for about 10 miles, it clears up. After the jeep's hissy fit is done and it decided to work which is normally resolved by shifting it into neutral and revving it two or three good times, it is obvious one cylinder is missing sometimes but sometimes it decides to work. So i went to leave my house last night and noticed my jeep was sputtering and died on me. I'm having random loss of power/misfiring. We've spent all weekend trying to diagnose an engine issue with no success. When I let off the throttle, it feels like the Jeep continues to inject fuel. You said you replaced the O2 sensors? I had very similar issues with my TJ, same year at roughly the same mileage. This might imply the distro is out-of-phase? or, it might just mean I don't push the jeep under load, so the timing never has to advance itself. 1K views 7 replies 4 participants last post by Que89YJ Sep 24, 2015. if its idling and I give it some gas, it seems to stumble, and backfire through the exhaust. 4 4 cyl backfired when i was accelerating and a red light what is the - Jeep 2005 Wrangler question. 0 4x4. Based on your boating event, you could be headed in all kinds of Produced from 1997-2006, many consider the Jeep Wrangler TJ to be the last true Wrangler. Make it about 60 miles, go to pass somebody, Jeep starts backfiring and won't go above 55mph or shift. XJ Cherokee Technical Forum 88 cherokee backfiring. This hasn't 't happened on my jeep but that very same thing has happened on two old motorcycles. I determined that I have a vaccum leak, and I clamped down the airbox hose onto the throttle body. O If it has to much timing it well idle good but once you add RPM's it well OVER advance and cause missing , backfiring and not wanting to run. Had to slow for traffic and as we started moving again the Jeep backfired a couple of times and then continued on the road running a bit I have a 1997 2. I replaced both oxygen sensors and the coolant temperature sensor (it regulates the PCM based on coolant temp - it's cheap and I replaced it based on advice I'd heard here), replaced the cap, plugs, and wires, and it solved my rough Okay I Have A 2000 Jeep Cherokee It's A 2. 5l would now idle great but would now backfire if the throttle was applied. When I turn on the Jeep, it turns on fine. The problem is coil packs. The Jeep runs fine for about 10 minutes from cold. When fully warmed up the engine vapor locks and will stumble badly when making turns. Starts right up and then starts sputtering again before I pull away from the pump. it will backfire occasionally at idle. The few times the Jeep has started it will run just very badly. Have you checked the O2 sensor heater fuses ? Just because the code says O2 sensor, doesn't mean the sensor is bad. 5k rpm and it ran perfect. 1988 jeep wrangler. Download them. Last Night I Was Driving Home And It Randomly Started Jerking Like It Was Going To Die, I just bought a used YJ for a project with my two sons. I noticed that my PCV hoses had no vaccum, instead these little nubs next to the throttle body were producing vaccum and suction, and making hissing noises. comBe sure to check out all 4 videos in this series to watch me diagnose this misfire issue:Episode 1: https://youtu. 5L.
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