CHECK ENGINE LIGHT DOESN'T STAY ON
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Joined: Sep 2002
Posts: 77
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From: Los Angeles CA
CHECK ENGINE LIGHT DOESN'T STAY ON
This is my story. (94 LT1) Low coolant light and check engine light would come on when the car was cool, along with rough idling and the lights would turn off when the car would warm up and run fine. I took it to the shop to get the coolant vacumed and re-filled and the car was fine for a few days. Today the check engine light came on along with the low coolant light and the car began to stutter like it wanted to turn off. I noticed the coolant temp. was fluctuating too. (down to 80 to 160 just going crazy). I want to check the codes but everywhere I go they tell me the check engine light has to stay on. Is that true. Let me know what you guys think it is and how I can fix it please.
Could it be the O2 SENSOR.
Could it be the O2 SENSOR.
Melting Slicks
Joined: Jun 2001
Posts: 2,525
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From: Sarasota, FL
Re: CHECK ENGINE LIGHT DOESN'T STAY ON (compajd)
An intermittent check engine lite indicates an intermittent problem. You can pull the codes to see what is happening. If this happens only when the engine is cold and then runns better and you never get any lites when warm there is something wrong with your open loop warm up cycle. Disconnect battery or pull ECM fuse to clear past codes then the next time this happens pull the codes. Good Luck!
Bob
Bob
Safety Car
Joined: Feb 2002
Posts: 4,212
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From: Sun City West Az
Re: CHECK ENGINE LIGHT DOESN'T STAY ON (TA)
The codes should remain stored even if the light goes out
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Joined: Sep 2002
Posts: 77
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From: Los Angeles CA
Re: CHECK ENGINE LIGHT DOESN'T STAY ON (compajd)
I took it to the shop and it was just the coolant temp. sensor (7.99 for the part). The shop charged me $35.00 for the scan and labor.
