1991 Cadillac DeVille 4.9L Poor Idle Quality, MIL Lamp on, no communication
Vehicle idles rough/misfires, service engine soon and service vehicle soon lights are on, fuel mileage data inop, and speedometer inop. These things all happen at the same time and it is intermittent. Usually happens at start-up, sometimes only lasts a minute ...
FIX posted 7/8/2011
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Message Closed w/FIX
Vehicle Data1991 Cadillac DeVille
Trouble Codes
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Message Closed w/FIX
Vehicle Data
1991 Cadillac DeVille
VIN | 1G6CD53B7M |
Engine | 4.9 L / 8 cyl / GAS |
Trans | 4-speed Automatic (Electronic) |
Delivery | Fuel Injection |
Symptoms | Poor Idle Quality, MIL Lamp on, No Communication |
Occurs | Intermittently |
Trouble Codes
52 | PCM Memory Reset |