2002 Jeep Wrangler Check engine light

Tiny
RIDEZLOW
  • MEMBER
  • 2002 JEEP WRANGLER
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 115,000 MILES
Bought my 2002 Wrangler two days ago. Went to buy new tires and wheels. On the way home, the check engine light started blinking. Within a few seconds it was like someone shut the car off, no power. Seconds later the engine came back to life. This happened 3 times within a 1 minute period. Pulled over opened the hood and saw nothing. The engine seemed to be running on a few cylinders, really rough. Good oil pressure and not overheating. Shut it off. 10 minutes later started it and it ran fine all the way home, 50 miles. When I got home I opened the hood to find fluid all over the engine compartment. Determined it came from the power steering reservoir. Not sure if that's related. It runs fine but the check engine is still on. Not blinking. What is going on?
Sunday, August 8th, 2010 AT 2:59 PM

3 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Check engine light coming on

Have the computer scanned for code/s-you have a problem within the engine management system that caused the CEL to turn on-This is your starting point of diagnosis, finding out what's going on.
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Sunday, August 8th, 2010 AT 3:58 PM
Tiny
RIDEZLOW
  • MEMBER
  • 2 POSTS
Code P0300 random misfire on cylinders 2, 4 & 6. No reason. Tech said a TSB says it could be carbon buildup on the exhaust valve causing problems on roll out. Could need decarbonizing. Any other ideas?
Thanks
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Wednesday, August 11th, 2010 AT 3:29 PM
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Check those cylinders compression if its higher than normal if it is we can blame it on carbon otherwise check and test the following, normally a random misfires are caused by vacuum leak and contaminated fuel

1. Defective spark plug.
2. Inadequate spark/coil, defective spark plug wire.
3. Lack of compression
4. False air leakage.
5. Faulty fuel injectors.
6. Insufficient fuel pressure.
7. Contaminated fuel.
8. EGR valve that is leaking.
9. Oxygen sensors.
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Wednesday, August 11th, 2010 AT 5:54 PM

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