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1993 Cadillac DeVille 4.9L Excessive Emissions
Posted to GM Driveability on 2/1/2007 17 Replies

I have a cadillac that keeps blowing up mufflers. I have an idea why but need some help on diagnose.

It will not go into closed loop and runs rich. It has new cap, rotor, wires, plugs ( all were dry), egr (POS flow)and O2 sensor. The ECT is reading correctly...

17 Replies Received (View Replies)

  Related Documents & Media  1993 Cadillac DeVille

 
Message Closed w/FIX

car Vehicle Data

1993 Cadillac DeVille

VIN 1G6CD53B8P
Engine4.9 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
SymptomsExcessive Emissions
OccursUnder Load
Message Closed w/FIX

car Vehicle Data

1993 Cadillac DeVille

VIN 1G6CD53B8P
Engine4.9 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
SymptomsExcessive Emissions
OccursUnder Load