I have a 91 Caprice classic check engine light

neu104
20

Asked by neu104 Jul 12, 2014 at 05:56 PM about the 1991 Chevrolet Caprice Classic

Question type: Maintenance & Repair

It comes on when starting about 1 out of every 8 starts. If I shut the car off the light goes off
and doesn't come back on when restarted. There doesn't appear  to be anything wrong.
Oil and coolant are full. The car runs great. Can't figure it out.

1 Answer

Js08016
16,005

You'll need to get the trouble code(s) out of the computer. Your Caprice is OBD I so you can pull the codes using a paper clip. Under the dash to the right of the steering column you'll find the ALDL connector (see picture). With the ignition off insert the ends of the paper clip into the holes at the top right corner of the ALDL connector. Now turn the ignition to the run position but do NOT start the engine. The service engine soon light will begin flashing a code 12 to let you know you're in diagnosis mode. It will appear as flash.............. flash, flash. It will flash out code 12 three times. Then there be a long pause and any codes stored will flash out the same way, three times each. Once all the codes have been flashed out, code 12 will begin flashing again. The trouble codes will be two digits. Such as 44, for example. Once you have the codes post them and we'll be able to help further. HTH. -Jim

Best Answer

Your Answer

Related Questions

  • Lighting problemes 1 answer

    I HAVE A 91 CAPRICE I HAD AN ALARM TAKEN OUT OF IT NOW I HAVE NO PARKING NOR TAIL LIGHTS BUT I DO HAVE BRAKE LIGHTS AND TURN SIGNELS NEED HELP

    1991 Chevrolet Caprice Classic

    -

    Maintenance & Repair

  • Help need a diagnosis 5 answers

    Ok I have a 91' caprice with a 5.7 350 connected to a 700R4 transmission. It was a state trooper's car so yes its the interceptor package( just an upgraded can pistons and valves... I recently put...

    1991 Chevrolet Caprice Classic

    -

    Maintenance & Repair

  • Electrical issue 1 answer

    I have a 1985 Chevy Caprice Classic 305 5.0. My head lights, radio, heater, interior lights and horn stopped working the other day. Oddly enough, my tail lights and blinkers still work. I checked ev...

    1985 Chevrolet Caprice Classic

    -

    Maintenance & Repair

  • I'm looking for an elecrical schematic for a 1989 chevy caprice classic. 1 answer

    I am having an electrical problem with an 89 Caprice Clasiic, The headlights, tail lights, power locks and radio have all stopped working. I cannot find a wiring diagram for this vehicle anywhere, w...

    1989 Chevrolet Caprice Classic

    -

    Maintenance & Repair

Search Chevrolet Caprice Questions

Chevrolet Caprice Experts

#1 dandyoun
dandyoun
Reputation 240
#2 John Saffrahn
John Saffrahn
Reputation 140
#3 Js08016
Js08016
Reputation 110
View All

Related Models For Sale

Used Chevrolet Camaro"
611 Great Deals out of 32,848 listings starting at $1,200
Used Ford Crown Victoria"
44 Great Deals out of 1,570 listings starting at $1,950
Used Chevrolet Corvette"
338 Great Deals out of 9,764 listings starting at $4,500
Used Buick Regal"
236 Great Deals out of 10,931 listings starting at $1,995
Used Mercury Grand Marquis"
101 Great Deals out of 3,758 listings starting at $1,777
Used Ford Mustang"
817 Great Deals out of 29,080 listings starting at $1,500
Used Cadillac DeVille"
59 Great Deals out of 3,328 listings starting at $1,595

Used Cars For Sale