98 Deville

Tiny
DRDOOWAH
  • MEMBER
  • 1998 CADILLAC DEVILLE
  • V8
  • FWD
  • AUTOMATIC
  • 115,000 MILES
Idle on my 98 Deville increased dramatically, won't return to normal. Temp dropped in our area prior to this problem. Advise
Tuesday, December 14th, 2010 AT 3:07 PM

1 Reply

Tiny
FACTORYJACK
  • MECHANIC
  • 4,159 POSTS
Is there a check engine light on? Unless there is a significant vacuum leak, you could have a faulty idle air control valve, a chunk of carbon in the IAC passage, throttle plate stuck, or a faulty cruise or throttle cable.
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Wednesday, December 15th, 2010 AT 5:22 AM

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