misfire

I have a 2003 Jeep wrangler Sport, 6 Cylinder motor. Ive had it for around 5 years, at about 140,000 miles today! Huge problem, yet to find a solution! Keep getting codes p0302, p0305. - Ive replaced the spark plugs, no results. - I replaced the coil pack, with a new one from the dealership...

Hey Jeepers, My 1998 Wrangler TJ 2.5L Auto has been giving me some issues while driving. Recently, the engine has been giving me a sort of lag as I accelerate, more specifically within the 35-50mph range. Also, when pushing gas and pushing past 3000rpms, my Check Gauges light would pop on...

Because Jeep...... I have a P0300 code so its multiple misfies...but that is only code so doesnt specify a a cylinder. It doesnt run bad...it occasionally has a shimmy in the engine...would that be a whole coil pack to replace or still could be a vacuum leak? 2nd issue The oil gauge will...

I have a 2002 straight 6 TJ. Been driving it about 200 miles each weekend from Nash to Knox. Recently, started it up and it idled rough then check engine light flashed. Code was p0303. 3rd cylinder problem, first thing I did was replace the spark plug and I am getting the same code. Heard I...

Hi gang, I'm helping a buddy of mine diagnose some codes on his 2005 TJ Wrangler X. One of the three codes he's throwing is 'P0330' and every search seems to indicate a 'knock sensor' yet, I keep reading (all over the web - including some posted by Jerry B) that there's no such thing on the...

I recently got my 2006 LJ back on the road. Of course it failed inspection. Had cracked front and rear manifolds - replaced. I then started getting the code for 6th Cylinder Misfire. The plugs and coil have been replaced and the fuel system was cleaned. Still getting the code. The...

I have a 2005 TJ 4.0 and I joined for some help. I have a P0303 code which is cylinder 3 misfire. Things I have done so far include all new spark plugs, new coil rail, new o2 sensors, swapped the first fuel injector with the third fuel injector, and a new crank position sensor. Only thing I can...

I have a 2006 Wrangler and have been experiencing some stalling issue when decelerating. A few days ago the check engine light came on. I checked the diagnostic codes and codes said a mis-fire on cylinder 2 and bad O2 sensor at catalytic converter. The converter was also getting hot and the...

When I got my Jeep close to three years ago I decided to go crazy and replace everything on it to make it last as long as possible and run great! Unfortunately, that ended up being a big mistake that I have paid for very deeply as far as my pockets are concerned. One of the mistakes I made was...

My jeep starts fine when it's cold, but if I shut it off then immediately try to start it it will hit but not fire. It will also sputter if I drive it on the highway for more than 10 minutes like it's running out of gas. I put a new fuel pump in and it didn't change anything. Any help is much...