IDLE PROBLEM

  • Tiny
  • jaxbch3031
  • 1994 Cadillac Concours
  • V8
  • FWD
  • 150 miles

What would make the engine idle high on a 1994 cadillac concours?

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Saturday, July 23rd, 2011 AT 6:06 AM

6 Replies

  • Tiny
  • mhpautos
  • Expert
  • 30,591 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

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

4.6 liter northstar v8, thank you

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Saturday, July 23rd, 2011 AT 9:05 AM
  • Tiny
  • mhpautos
  • Expert
  • 30,591 posts

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
  • Member

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
  • Expert
  • 30,591 posts

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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