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Check engine light frustration, Audi 90

Check engine light frustration, Audi 90

  #1  
Old 03-09-2006, 02:52 PM
Thread Starter
Join Date: Aug 2005
Posts: 1
Default Check engine light frustration, Audi 90

I just replaced the O2 sensors on a 2.8L 1995 Audi 90. It corrected a rich fuel mixture immediately. I am now getting a check engine light come on when the cars coolant temperature is high when idling in traffic just prior to the electric radiator fans engaging. The check engine light only comes on at high temperatiure. The car begins to idle rough when it happens and it smells like it is reverting back to a rich mixture. Could this new problem be related to the temperature sensor, or could I have gotten a defective O2 sensor. If I shut the car off and restart, the check engine light gors off and stays off until the temperatue goes high again. Any experience with this would be appreciated....
 
  #2  
Old 03-09-2006, 05:08 PM
Join Date: Nov 2005
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Posts: 12,826
Default RE: Check engine light frustration, Audi 90

we need fault codes on these cars "its obd2" its no good telling what you think is happening without the code we would just be guessing on the resolve
 
  #3  
Old 03-09-2006, 08:27 PM
Join Date: Aug 2005
Location: Brooklyn, NY
Posts: 1,561
Default RE: Check engine light frustration, Audi 90

flash it out and tell us.
 
  #4  
Old 03-10-2006, 06:50 PM
Join Date: Nov 2005
Location:
Posts: 12,826
Default RE: Check engine light frustration, Audi 90

check for fault codes, check all fuses and ensure the coolant fan is working
 
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