check engine light

Hi, Since a while i have some issue's, they came around the same time out of nothing. I can't put my finger on it - ABS light is on - Gauge Check light is on - Check engine Light is on - Elektrical cooling fan is always running on High speed as soon as you start the motor When i read the...

I just ran a cold compression jeep on my jeep, found compression of 155,150,60,60,120,120 at each cylinder. What does that mean and what is the repair? Background: Bought a 4.0 straight 6, 97' TJ Sport 3 years ago. So far I've replaced the floorplans, replaced 3" lift with 1.5" lift, replaced...

Hello guys, My 05 TJ 4.0 6 speed had a check engine light few weeks ago i got P0153 code, replaced both upstream O2 sensors with NTK/NGK and after around 220 miles the CEL is back with P0133 and P0153! What should i look for now? TIA NTK 23018 NTK 23160

So I’m not very smart when it comes to car repair but I’m trying to pinpoint what’s wrong with my jeep, Every so often when I’m driving my my manual jeep will drive normally. However it seems whenever my check engine light is on my jeep idles fine, however when my check engine light is off the...

Does anyone else have a really loose steering column, like to the point that its difficult to drive on the highway because the wheels go all over the road and you cant feel it in the steering wheel. Like its so bad that i cant shake the steering wheel pretty violently and the car wont turn at...

Originally when the problems started I had the following codes: P0455, P0123, P0135, P0155, P0121. Basically its some tps code, evap leak, and o2 sensor codes. These codes came after I cleaned my throttle body and my car wouldn't idle, the rpms would be shaky on idle and would smell like it's...

I did the 3 key turn so the dash would show the codes as my check engine light is on, and I got P0743, P0740, P0442, and P1486, but on two separate occasions when just plugging in an OBD II, it only showed P0743. I'm new to tj's but just car work in particular this Jeep is new to me, it is an 02...

I have a ‘97 Wrangler and just today the check engine light came on. I did the key trick and the odometer shows code code 12 (Direct battery input to PCM was disconnected within the last 50 Key-on cycles.), code 21 ( O2 Sensor Error), and code 55 (Completion of fault code display on Check Engine...

I've perused around various forums and done a ton of googling looking for any useful information, but haven't found much. For a '02 4L I6, is anyone familiar with the electrical connections for the leak detection pump and solenoid, or chasing electrical shorts? The electrical diagram that I've...

First post here, So my 98 jeep tj 4.0 with 167k miles auto trans threw a check engine light at me yesterday. I read the codes and it came up with 0300 0306 and 0138. 3 days ago I changed both upstream and downstream 02 sensors, removed and cleaned throttle body and cleaned IAC. The Jeep was...

Hey, I replaced my PCM in order to resolve limp mode issues with my TCM and was hoping it would fix my gas gauge issue but it has not. My gas gauge will read normally on start but after a couple minutes driving it will read empty with the gas light. I have already tried replacing the...

Hey guys! A buddy of mine has a OBD II Diagnostic tool, I ran my codes and I got these two: P1281 Thermostat Malfunction P0700 Transmission Malfunction Present I have a 2003 Rubicon, she's got over 153k on the odometer. I have also redone the entire cooling system. I hope you guys have some...

2005 Jeep Cherokee Laredo 3.7liter I bought about a week ago, and first thing I did on payday was replace the battery. I let advanced auto do it as I didn't wanna haggle trying to find miss match tools and shit. But anyway I noticed as I was driving back to work that the rpms were through the...

Hey everyone, My first time posting onto this website. This is my first time owning a jeep tj (third owner), so I'm new to diagnosing the issues and fixing one up. My jeep is a 2006 Jeep Wrangler Rubicon that has 70k miles on it. When I got the jeep, the windshield wipers and wiper fluids...

I bought a 03' Rubicon about a month ago from a local dealership. Everything has been great until the other day when the check engine light came on. I took it to my local mechanic and he said that it was an EVAP leak code and recommended I try to take it back to the dealer who I bought it from...

Hey all a while back my check engine light would come on in my 1999 4.0l tj, and it read a random misfire and a misfire in cylinders 3 and 4. Took it to my dad's mechanic and they cleaned the injectors, spark plugs and distributor as well as crankshaft sensor had been replaced recently...

If your TJ has a check engine light illuminated, below is the procedure for retrieving the diagnostic trouble code(s): Turn the ignition key until the digital odometer displays, then turn it back to off. Repeat three times in succession. (ON/OFF/ON/OFF/ON) Count the number of times the check...