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1999 Cadillac Seville STS 4.6L Poor Idle Quality, MIL Lamp on, high idle
Posted to GM Driveability on 11/1/2006 6 Replies

vehicle has a high idle of about 1000rpm which illuminates MIL. There is no apparent vaccum leaks! runs good! just high idle. Smoke test indicate NO vaccum leak. HELP

6 Replies Received (View Replies)

  Related Documents & Media  1999 Cadillac Seville STS

 
Message Closed w/FIX

car Vehicle Data

1999 Cadillac Seville STS

VIN 1G6KY5499X
Engine4.6 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsPoor Idle Quality, MIL Lamp on, High Idle
OccursAlways, Idle

Trouble Codes

P0507Idle Speed Control System Higher Than Expected
Message Closed w/FIX

car Vehicle Data

1999 Cadillac Seville STS

VIN 1G6KY5499X
Engine4.6 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsPoor Idle Quality, MIL Lamp on, High Idle
OccursAlways, Idle

Trouble Codes

P0507Idle Speed Control System Higher Than Expected