check engine light on on my 88 caprice i used multiple diagnostic machines and none of them were able to read the computer what can it be????

Asked by Apr 01, 2012 at 05:26 PM about the 1988 Chevrolet Caprice

Question type: Maintenance & Repair

3 Answers

95

Try to take a paper clip and bend it out of shape so you have 2 pointed ends. find the 2 upper right pins on the DLC. Stick the modified paper clip into those 2 pins. With the key on engine off you will see the engine light flashing. The flashes are the code numbers. It will always flash code 12 which means it is in diagnostic mode, it really means nothing. It will flash code 12 twice, after that it will then flash the trouble code of your car. you can go online put the gm code number in and find out what it means. If this does not work then I suspect you have a bad computer

3 out of 3 people think this is helpful.
8,650

If the paper trick doesn't work then try scanning it with an OBDI specific scan tool. Chances are the other scanners where OBDII only or required an adapter to scan an OBDI vehicle.

75

just the light coming on, but no "REAL ISSUES"? ignore it. mine comes on any time I idle for several minutes, like at a drive thru or a long stop light. then it goes out once I'm in motion again.

1 out of 1 people think this is helpful.

Your Answer

Add photo

Related Questions

Caprice

Looking for a Used Caprice in your area?

CarGurus has 163 nationwide Caprice listings starting at $20,000.

ZIP:

Search Chevrolet Caprice Questions

UK Questions

Are you a UK consumer? CarGurus now has a discussion forum in the UK.

Chevrolet Caprice Experts

#1 Js08016
Js08016
Reputation 460
#2 dandyoun
dandyoun
Reputation 270
#3 tennisshoes
tennisshoes
Reputation 210
View All

Related Models For Sale

Used Chevrolet Camaro
438 Great Deals out of 40,559 listings starting at $3,500
Used Chevrolet Monte Carlo
17 Great Deals out of 1,647 listings starting at $2,990
Used Dodge Charger
479 Great Deals out of 30,027 listings starting at $2,275
Used Ford Crown Victoria
4 Great Deals out of 1,384 listings starting at $1,700
Used Ford Mustang
562 Great Deals out of 42,506 listings starting at $1,699
Used Cadillac DeVille
3 Great Deals out of 1,911 listings starting at $1,600
Used Buick Regal
143 Great Deals out of 11,645 listings starting at $1,450
Used BMW 7 Series
152 Great Deals out of 5,597 listings starting at $3,299