1998 Chevy Cavalier check engine light on

1998 CHEVROLET CAVALIER
112,000 MILES • 4 CYL • 2WD • MANUAL
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CHUCK KOLODIEJ
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  • 1 POST
what would cause code #P0118 and how do I fix it? I did replace coolant temp sensor. Temperature gauge stops working when engine fan comes on and code goes active.
Dec 4, 2008 at 6:45 PM
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JACOBANDNICKOLAS
  • CAR REPAIR CONTRIBUTOR
  • 110,190 POSTS
Hi: If you replaced the CTS, then I have to ask a question. Did you reciently change the coolant or have the system flushed? If so, bleed the system so there are no air blocks. If not, I feel it is related to the PCM or a wiring problem to the PCM. I suggest having it checked at a dealer. You may even want them to check the EGR. Finally, is does the car run rough when this happens? Here i s a picture of how the system ties together. Check for wiring repairs and connection repairs.


https://images.2carpros.com/forum/automotive_pictures/249084_50791_1.jpg

Let me know if this helps. I really feel there is a bad connection causing the engine to think it's running at below 0 degree temps. Joe
Dec 4, 2008 at 8:29 PM
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