2002 Jeep Liberty – Answers.com

16 Nov 2014 | Author: | Comments Off on 2002 Jeep Liberty – Answers.com
Jeep Liberty

Where is the thermostat in a 2002 jeep liberty?

How do you reset a check engine light on a 2002 Jeep Liberty Sport 4×4 with a 3.7L engine?

Question. I was wondering if anyone could help with a problem my wife has been having with her 2003 Jeep Liberty Limited. The vehicle has 88K miles and runs well. About 2 months ago, the check engine light came on and wouldn’t go off.

My wife took it in for an early oil change and diagnostic. The oil change didn’t solve the problem and the diagnostic showed nothing wrong. Then a few days later, the light went off. A few days later the light came back on again.

She then brought the vehicle to a mechanic and, after diagnosing the vehicle for over 2 hours, decided that the gas cap needed to be replaced. The light went off. 2 days later, the light came back on again.

Brought the vehicle back to the same mechanic who did a full oil change, tune-up and replaced the gas sensor. The light went off. That was yesterday. Today, the light came back on again. I refuse to bring it to another mechanic and have them guess at the problem, charge us an arm and a leg and wind up having the liht come back on a few days later.

Any suggestions?

You can contact me at adamscrnr@comcast.net

Answer

Don’t waste your time at autozone. Pull the codes from the computer, match the code to the troubleshooting procedure, follow the procedure to find the source. Repair the source, light will go out if that was the only problem. There are monitors or self tests the computer runs the car through a drive cycle, if a problem occurs, it may not run all of the self tests until that problem is taken care. Therefore, another problem may exist.

It is emission related. OR hook up a scanner that is capable of clearing codes, and hope that none are still active. Disconnecting the battery can create other headaches and will not likely solve your dilemma.

Best bet is to contact the local snap-on dealer and have him refer you to a known good shop that specializes in this technology-he will know.

Jeep Liberty

Answer

Answer

Answer_ Comment: I find that everytime I fill my almost emtpy gas tank with gasoline containing 10% ethenol my check engine like comes on. Only after filling my almost empty gas tank again with gas not containing ethenol my check engine light goes out. (after half a tank of gas is burned.) You can read the content of the gasoline that you are purchasing usually on the pump. Most time it is in small lettering. I hope this is helpful it works for me.

Try this first you won’t waste alot of trips to the dealer and most dealers don’t know this. I just descovered the pattern myself.

At about 90,000 miles, my check engine light came on as well. My mechanic ran diagnosis on it. I had cracks in my emissions tubing. After replacing the tubing. cheap fix. the light went off.

Jeep Liberty
Jeep Liberty
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