2000 Cadillac DeVille DHS 4.6L Poor Idle Quality, Misfire, MIL Lamp on
Hello all Just got done doing head gaskets and timeserts started vehicle and noticed right away that it had a misfire at idle and the MLS light was on. Increased rpm to around 1800 and noticed engine smoothed out. Checked for a misfire with the scanner, code p...
FIX posted 8/24/2012
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Vehicle Data2000 Cadillac DeVille DHS
Trouble Codes
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Vehicle Data
2000 Cadillac DeVille DHS
VIN | 1G6KE57Y5Y |
Engine | 4.6 L / 8 cyl / GAS |
Trans | 4-speed Automatic (Electronic) |
Delivery | Fuel Injection |
Emissions | OBD-II Compliant |
Symptoms | Poor Idle Quality, Misfire, MIL Lamp On |
Occurs | Idle |
Trouble Codes
P0300 | Multiple Misfire Detected |
P0436 | Oxygen Sensor (Bank 1 Sensor 1) Heater Circuit |