check engine on and fans running
Team Owner
Joined: Sep 2003
Posts: 25,394
Likes: 2,741
Ideas ain't going to fix it! Might lighten the wallet but I'd say you either have it checked or learn the "how to"!
How long have you owned the car? Any recent attempts at some repairs or maintenance that you've attempted yourself? If you've recently done anything - go back to what you've done and sort from there.
If you've done nothing -
http://tech.corvettecentral.com/2011...trouble-codes/
With a '90 and if it has C68/ATC you could use the AC Control to maybe check the coolant temp that the ECM sees and use that as maybe a "clue/hint". If no C68 rely on the diagnostics.
I imagine you don't have a FSM (Factory Service Manual) and if the car is a keeper I'd suggest you buy one. Print or "electronic media" are both available - some have and use both, some have preferences, some might have made a different choice after buying one or the other.
I have both but use "digital media" more frequently.
How long have you owned the car? Any recent attempts at some repairs or maintenance that you've attempted yourself? If you've recently done anything - go back to what you've done and sort from there.
If you've done nothing -
http://tech.corvettecentral.com/2011...trouble-codes/
With a '90 and if it has C68/ATC you could use the AC Control to maybe check the coolant temp that the ECM sees and use that as maybe a "clue/hint". If no C68 rely on the diagnostics.
I imagine you don't have a FSM (Factory Service Manual) and if the car is a keeper I'd suggest you buy one. Print or "electronic media" are both available - some have and use both, some have preferences, some might have made a different choice after buying one or the other.
I have both but use "digital media" more frequently.
Last edited by WVZR-1; Apr 27, 2017 at 08:56 AM.
Thread Starter
Cruising
Joined: May 2013
Posts: 12
Likes: 0
From: vermilion Erie
Ideas ain't going to fix it! Might lighten the wallet but I'd say you either have it checked or learn the "how to"!
How long have you owned the car? Any recent attempts at some repairs or maintenance that you've attempted yourself? If you've recently done anything - go back to what you've done and sort from there.
If you've done nothing -
http://tech.corvettecentral.com/2011...trouble-codes/
With a '90 and if it has C68/ATC you could use the AC Control to maybe check the coolant temp that the ECM sees and use that as maybe a "clue/hint". If no C68 rely on the diagnostics.
I imagine you don't have a FSM (Factory Service Manual) and if the car is a keeper I'd suggest you buy one. Print or "electronic media" are both available - some have and use both, some have preferences, some might have made a different choice after buying one or the other.
I have both but use "digital media" more frequently.
How long have you owned the car? Any recent attempts at some repairs or maintenance that you've attempted yourself? If you've recently done anything - go back to what you've done and sort from there.
If you've done nothing -
http://tech.corvettecentral.com/2011...trouble-codes/
With a '90 and if it has C68/ATC you could use the AC Control to maybe check the coolant temp that the ECM sees and use that as maybe a "clue/hint". If no C68 rely on the diagnostics.
I imagine you don't have a FSM (Factory Service Manual) and if the car is a keeper I'd suggest you buy one. Print or "electronic media" are both available - some have and use both, some have preferences, some might have made a different choice after buying one or the other.
I have both but use "digital media" more frequently.
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Team Owner
Joined: Sep 2003
Posts: 25,394
Likes: 2,741
1C1 section of the FSM
Last edited by WVZR-1; Apr 28, 2017 at 09:55 AM.
Team Owner
Joined: Jul 2004
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From: Hartford WI