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Idle problem

Tiny
JAXBCH3031
  • MEMBER
  • 1994 CADILLAC DEVILLE CONCOURS
  • V8
  • FWD
  • 150 MILES
What would make the engine idle high on a 1994 cadillac concours?
Saturday, July 23rd, 2011 AT 6:06 AM

6 Replies

Tiny
MHPAUTOS
  • MECHANIC
  • 31,937 POSTS
Idle control motor, vacuum leaks, which engine is fitted 4.6 or 4.9?
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Saturday, July 23rd, 2011 AT 8:27 AM
Tiny
JAXBCH3031
  • MEMBER
  • 6 POSTS
4.6 northstar v8, and by the way thank you for responding so promptly
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Saturday, July 23rd, 2011 AT 9:04 AM
Tiny
JAXBCH3031
  • MEMBER
  • 6 POSTS
4.6 liter northstar v8, thank you
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Saturday, July 23rd, 2011 AT 9:05 AM
Tiny
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There is no adjustment with the 4.6 so check the icm, clean throttle plate and check for vacuum leaks, also do a scan to check for any unresolved fault codes.
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Saturday, July 23rd, 2011 AT 9:50 AM
Tiny
JAXBCH3031
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  • 6 POSTS
Thank you, how do I check for unresolved fault codes in my garage at home? I am not an idiot but, you know. Kinda old school and need help for this
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Saturday, July 23rd, 2011 AT 10:27 AM
Tiny
MHPAUTOS
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You will need a scanner, if the cars drivable, take it to most larger parts stores they often do free basic scans.
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Saturday, July 23rd, 2011 AT 10:35 AM

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