SES light - 87 IROC
#1
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Car: 2011 2LT RS
SES light - 87 IROC
I picked up my 87 IROC 350 back in January and put about 2,300 miles on her. Today the light came on. I pulled over at auto zone to have them do a scan on the codes and they didnt have the old ADL style scanner. I had to purchase it instead. Before I opened it I started the car and the light was off. Is this a glitch? Should I scan it anyways or take the scanner back for a refund since its unopened?
#2
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Re: SES light - 87 IROC
I picked up my 87 IROC 350 back in January and put about 2,300 miles on her. Today the light came on. I pulled over at auto zone to have them do a scan on the codes and they didnt have the old ADL style scanner. I had to purchase it instead. Before I opened it I started the car and the light was off. Is this a glitch? Should I scan it anyways or take the scanner back for a refund since its unopened?
I'm going by memory...I have a scan tool so I've forgotten the manual way to read codes. Locate the ALDL. Ground the A and B terminals. Turn the ignition to ON (don't start the engine) and watch the SES light. It should blink a Code 12 three times, then blink what ever trouble codes are stored (again, three times).
Search the forum of look in the tech articles section. There should be a DIY procedure someplace here.
I'm willing to bet you had a Code 32 (EGR).
Edit I found a link that may help: http://www.automotiveforums.com/t679458.html
Last edited by paulo57509; 04-24-2009 at 02:53 PM.
#3
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Re: SES light - 87 IROC
Thanks. I just found it odd that the light will turn itself off after you restart the car. Normally it should stay on until the issue is fixed or it went through several loops and is stored in the computer.
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Car: '91 RS CP now is the son's driver
Engine: CP =3.1, will get V-8 maybe someday
Transmission: stock
Axle/Gears: 3.42 posi W/ disks
Re: SES light - 87 IROC
on OBD1 the codes are normally cleared on start up, then reset after the car goes into closed loop and the ECM finds a problem. unless it is a catastrofic fail then it goes into limp in mode if it can even run. however the fail codes are retainde for 50 starts then dropped.
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Car: 2011 2LT RS
Re: SES light - 87 IROC
Thanks for the replies guys.. I finally got around to checking the codes on the car by grounding the A & B terminals. The only thing I am seeing is the usual code 12. The car shows its fine. It would flash once, pause, then flash 2 times. I have not had anything done to the car since I last posted. I guess the code cleared and I need to wait till it comes back on to try again?
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