SOLVED! Jeep Wrangler Misfire is over - a hard lesson learned - Can't believe the cause!
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- Опубліковано 24 вер 2019
- www.Garagecouple.com
Be sure to check out all 4 videos in this series to watch me diagnose this misfire issue:
Episode 1: • Solving a cylinder 3 m...
Episode 2: • Jeep Misfire Diagnosis...
Episode 3: • DIY Jeep Tj Vacuum lea...
Episode 4: • SOLVED! Jeep Wrangler ...
NTK bank 1 sensor 1 - amzn.to/2mEcZfX
NTK bank 1 sensor 2 - amzn.to/2lHYbfV
NTK bank 2 sensor 1 - amzn.to/2nbaXnD
NTK bank 2 sensor 2 - amzn.to/2nenZRt
Autolite xp985 iridium plugs - amzn.to/2lG3xsc
MAP sensor - amzn.to/2mEmWd8
Finally figured out the jeep tj cylinder 3 misfire issue. A hard lesson learned - here is the final video. Glad she is running smoothly now. How this helps others in the future! We checked everything from fuel injectors, to the wiring, to the compression, a leak down test, vacuum test. Many of the parts and testing supplies we purchased either from amazon or rented from local big box stores. We were even thinking this could be a heat soak issue, but the real issue were the spark plugs. So we replaced the plugs with some high quality iridium and this issue is no longer active. Glad to be done with it!
Oh nice! Congrats!!!
Jeep....Making Mechanics out of Drivers since 1942!
This misfire code are caused by the Jeep Gods!! They know it will keep us all in constant communication combing through forums and UA-cam videos. It’s bigger than us. 🤣
These tractor engines do NOT like iridium plugs... use the recommended OEM plugs and you will be fine.
Nice Video. I am a career mechanic. That said, in diagnosis always remember that hesitation and miss under load is usually due to a weak ignition. Plugs first, then spark plug wires. We had 4.3 V-6 motors in a lot of our fleet at UPS. After a couple years they started throwing various codes. When tracking it down, we had done spark plugs, cap & rotor, and still had codes throwing. Plug wires looked like new. Guess what, put a set of wires on and the motors ran perfect. Lesson learned. Take care of the basics first.
You saved me a world of pain brother. I have a new rebuild of my 4.0L, and the store sold me the wrong spark plugs. Jeep ran fine at higher revs, but rough at idle. Gave me a miss-fire code. I replaced the already brand new (wrong) spark plugs with a new set of correct plugs, and all good! Thanks again.
You done everything but one first thing you should look at first 😕
Parts Canon its cheaper to have it diagnose by a professional
First time I ever did a tune-up on my 4.0 I went and bought brand new iridium cuz that's what AutoZone said I should use. Ran fine until you get up around four grand and it would start skipping. Took the old spark plug that I just pulled out of them back up there and told him to give me the exact ones which were coppers pulled their Iridiums out put the coppers back in and it ran fine.
Well I tried this plug change for my 02 TJ 4.0 misfire did not change a thing long story short was the cylinder cracked 0331 problem sold Jeep interesting
I have just put a set of those iridium plugs in my ZJ, they were recommended as mine is converted to LPG/CNG. Looks like I made a good choice then!
Yay!! Wow what a trip.. Im happy you found the issue. And shared your triumphs🎉🎈🎊🎆
I’ve seen a few of your videos, but this is what made me subscribe. I recently changed my spark plugs to double platinum Bosch plugs on my 4.0L, and it sounded great in the garage. When I took it out, got a cyl 1 misfire. Shortly later, cyl 5 misfire. Not even 100 miles on the new plugs. I thought the spark plugs causes a chain effect of other parts to go wrong. I had my rockauto shopping cart LOADED, but wasn’t 100% confident of it all. I just so happen to still have my old champion plugs, put them back in and it all went away lol. Well, no more Bosch plugs for me. Thanks for the tip, saved me hundreds of dollars and hours of work.
I have a 2001 TJ with the 4.0 L six-cylinder. I had a number three misfire code. Replacing the spark plugs cleared the problem. I’m considering putting the MSD Coil pack rail in just for good measure though.
I start with the same problem!! Very low idle , stalling, shuts down when stop or when engage clutch at first it do when warm, now when jeep is cold too. I will try with the sparks first! Thanks for all your videos! Really appreciated!
Glad you sorted it !
I have the 2.4 TJ. Cant find what the OEM spark plug is. I ordered copper on rock auto NGK hope they work
I had the same problem, and I also bought, part after part trying to fix the issue. Searching once again for a solution, i came across this very video. Wham-Bam-Bing-Boom-Bada-Bop, and the problem is fixed. I was using Bosch Platinum before I switched to the same ones in this video. Oh on a totally different note. I am selling six slightly use (2 weeks) Bosch Platinum spark plugs and still in the unoriginal box
I’m having the exact same issue. Any reasons you didn’t go with Jeep Original parts from a Jeep dealership besides prices?
i got the E3 plugs and they are so awsome !!! i noticed a big difference in idle , millage and over all performance well worth the extra few dollars!!