p0303

Hello all, New member here. I am getting code P0303 and am wondering if there are any reliable quick fixes. I have a 2006 LJ Rubicon and I've seen some posts about using the heat wrap for the fuel rail and injectors but all of the ones I've seen are for years up to 2004. Can I still use this...

Hi. New to the forum. Purchase used 2001 Wrangler SE 2,5L 5 speed. 106K miles. CEL was on but I guess I overlooked since the body and frame were solid. Issue: Very rough idle when cold. Gets a little better when warm. Auto zone CEL codes are P0303, P0132, P0304, P0138, P0455, P0303...

So, after months of weird stuttering under acceleration, and occasional obvious misfires, my LJ is finally spitting a code (or rather 2). P0300 and p0303. Now, in addition to the symptoms mentioned before, I've noticed in the last few days that the engine will "stick" at ~1000 rpms or so till...

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...

I have a 2000 TJ, 4.0L, 5spd with the check engine light on. Sometimes, it will start blinking for a short time then return to solid again. Here are the codes I'm throwing: P0205 P0300 P0303 P0305 So far, I've done the following: all new spark plugs, coil pack, cam shaft position sensor, and...

As I am new to this forum and to all the new computer stuff related to Jeeps I have a general question that may have been addressed. I have a 2006 Jeep LJ with a little over 190, 000 miles. Recently I started getting engine codes and poor performance. It started with codes for the O2...

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...

I recently had a new issue start. It's kind of like a sputtering and doesn't seem to be getting full power. It is very consistent but is mostly noticeable at 2k+ rpm. The higher the rpm the faster the sputter. No notible exhaust color changes. Not sure but thinking maybe injectors or plugs? Any...

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...

Noticed issues a couple times withe rough start after engine is hot. It is summer in FL too. Im going to replace the plugs just because I have yet to do so. Want to add the heat shield for the #3 injector as it sounds like that is the problem. Any idea where i can buy it and what its called?

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...