Check Engine Light after Autocross
Thread Starter
Burning Brakes
Joined: Mar 2002
Posts: 1,035
Likes: 0
From: Atlanta Ga
Check Engine Light after Autocross
I'm curious if anyone experiances this. After most Autocross events when I restart my car to go home, typically after sitting at least 1 hour after runs, I amost always get the "Check Engine Light" :confused: Sunday it came on about 10 minutes into my return trip just easing along about 65mph on the highway.
Every time I get it home then start again and no light :confused: Any ideas? I was wondering if maybe some sensor is getting different information after running the car very hard and then it goes away????? O2 maybe something else with the ECM type system.
Not too concerned but curious
Every time I get it home then start again and no light :confused: Any ideas? I was wondering if maybe some sensor is getting different information after running the car very hard and then it goes away????? O2 maybe something else with the ECM type system.
Not too concerned but curious
Thread Starter
Burning Brakes
Joined: Mar 2002
Posts: 1,035
Likes: 0
From: Atlanta Ga
Re: Check Engine Light after Autocross (Hawaii89vette)
I don't have a code reader. Typically as I said once returning home and then restarting the car it has always gone away? weird?
Racer
Joined: Mar 2001
Posts: 280
Likes: 0
From: Honolulu Hawaii
Re: Check Engine Light after Autocross (Dolfan)
There was a procedure to get the set codes from the computer by jumping the pins on the connector. Someone from the forum will hopefully jump in with the info on how to jump the connector. When this is done the check engine light will blink to a pattern to specify if any codes were set.
-Tim
-Tim
Burning Brakes
Joined: Feb 2003
Posts: 1,212
Likes: 0
From: OH
Re: Check Engine Light after Autocross (Hawaii89vette)
On your 89 you need to take a paper clip and jumper A-B. Those are teh two top towards the right on the ALDL connector under your steering wheel.
Just jumper and turn the car to ON, but don't start it. You will hear your fans run and other noises to tell you your in diag. mode. Then your check Engine light will flash, morse code like. 12 is End of Codes. You will have ot look up the others.
Yes a code will not light the SES light after a restart but that doesn't mean it hasn't happened and is all resolved. It will be stored for the next 50 restarts.
Just jumper and turn the car to ON, but don't start it. You will hear your fans run and other noises to tell you your in diag. mode. Then your check Engine light will flash, morse code like. 12 is End of Codes. You will have ot look up the others.
Yes a code will not light the SES light after a restart but that doesn't mean it hasn't happened and is all resolved. It will be stored for the next 50 restarts.
Le Mans Master
Joined: Jul 2002
Posts: 5,818
Likes: 2
From: Alive and well in Burlington NC
Re: Check Engine Light after Autocross (Dolfan)
Here's a link to the procedure to check for stored codes:
http://www.c4vettes.com/codes.htm
Hope it helps.
http://www.c4vettes.com/codes.htm
Hope it helps.
Thread Starter
Burning Brakes
Joined: Mar 2002
Posts: 1,035
Likes: 0
From: Atlanta Ga
Re: Check Engine Light after Autocross (Steel Blue 91)
Would a tool like this be helpful? For the money it might be worth having this around when a problem does occur.
http://www.etoolcart.com/index.asp?P...OD&ProdID=3759
http://www.etoolcart.com/index.asp?P...OD&ProdID=3759
Drifting
Joined: Jul 2002
Posts: 1,488
Likes: 4
From: Frostburg MD
Re: Check Engine Light after Autocross (Dolfan)
A paperclip would do the same thing as that tool. It would be more useful to you if you got something like an AutoXray scan tool from ebay, or if you have a notebook, make a cable and used one of the free scanning software program. Good advice in the scan and tune section.
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Burning Brakes
Joined: Apr 2000
Posts: 980
Likes: 2
From: Chandler AZ
Re: Check Engine Light after Autocross (Dolfan)
I am guessing a code 32. Just a guess with no facts at all but I'll guess EGR or EGR temp switch. I only say this because it is one of the most common ways the SES light is triggered in that year car.
[Modified by VAHROOM, 10:39 PM 4/27/2004]
[Modified by VAHROOM, 10:39 PM 4/27/2004]
