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2001 Cadillac Seville STS 4.6L Poor Idle Quality
Posted to GM Driveability on 3/6/2012 12 Replies

I have a 2001 Seville that very intermittantly will not idle (starts and stalls) or will idle high for a while. Checked IAC circuit with a noid light tool and I get alternatly flashing red to green lights and then settles to just green and red. Cleaned IAC and...

12 Replies Received (View Replies)

  Related Documents & Media  2001 Cadillac Seville STS

 
Message Closed w/FIX

car Vehicle Data

2001 Cadillac Seville STS

VIN 1G6KY54971
Engine4.6 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsPoor Idle Quality
OccursIntermittently
Misc.New Plenum Boot, No Vacuum Leaks

Trouble Codes

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

car Vehicle Data

2001 Cadillac Seville STS

VIN 1G6KY54971
Engine4.6 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsPoor Idle Quality
OccursIntermittently
Misc.New Plenum Boot, No Vacuum Leaks

Trouble Codes

P0507Idle Speed Control System Higher Than Expected