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1991 Cadillac DeVille 4.9L Surge, popping
Posted to GM Driveability on 12/23/2005 10 Replies

upon turning key on or off the isc motor pops in and out aproximately 1/4 inch in turn causing gas peddle to jump up and down othe than this the car will start and run fine. Have done throttle relearn procedure several times making no difference also tried new...

10 Replies Received (View Replies)

  Related Documents & Media  1991 Cadillac DeVille

 
Message Closed w/FIX

car Vehicle Data

1991 Cadillac DeVille

VIN 1G6CD538XM
Engine4.9 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
SymptomsSurge, Popping
OccursAlways

Trouble Codes

30isc circuit malfunction
Message Closed w/FIX

car Vehicle Data

1991 Cadillac DeVille

VIN 1G6CD538XM
Engine4.9 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
SymptomsSurge, Popping
OccursAlways

Trouble Codes

30isc circuit malfunction