
2003 Cadillac DeVille 4.6L Poor Idle Quality, Misfire
car came in without a mil lit. codes p0171,p0174,p0300,p1574 present. replaced spark plugs and boots, bg induction. car idled great. test drive recreated miss. no codes stored, miss fired over 300 times in a short time. every cylinder miss fire has a differant...
FIX posted 6/14/2006
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Message Closed w/FIX
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VIN | 1G6KD54Y43 |
Engine | 4.6 L / 8 cyl / GAS |
Trans | 4-speed Automatic (Electronic) |
Delivery | FI / MULTI PORT |
Emissions | OBD-II Compliant |
Symptoms | Poor Idle Quality, Misfire |
Occurs | Hot, Idle |
Trouble Codes
P0171 | Fuel System Too Lean (Bank 1) |
P0174 | Fuel System Too Lean (Bank 2) |
P0300 | Multiple Misfire Detected |
P1574 | Stop Lamp Switch Circuit Malfunction |
Message Closed w/FIX
Vehicle Data
2003 Cadillac DeVille
VIN | 1G6KD54Y43 |
Engine | 4.6 L / 8 cyl / GAS |
Trans | 4-speed Automatic (Electronic) |
Delivery | FI / MULTI PORT |
Emissions | OBD-II Compliant |
Symptoms | Poor Idle Quality, Misfire |
Occurs | Hot, Idle |
Trouble Codes
P0171 | Fuel System Too Lean (Bank 1) |
P0174 | Fuel System Too Lean (Bank 2) |
P0300 | Multiple Misfire Detected |
P1574 | Stop Lamp Switch Circuit Malfunction |