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1998 Cadillac Deville UNINTENDED ACCELERATION

Tiny
PEACHYKEEN
  • MEMBER
  • 1998 CADILLAC DEVILLE
  • V8
  • FWD
  • AUTOMATIC
  • 87,000 MILES
RPMS VARY AT IDLE AND DRIVING DOWN ROAD. HAD THROTTLE POSITIONING SENSOR REPLACED. PLUGS REPLACED. CRUISE CONTROL DISCONNECTED. IDLE AIR CONTROL VALVE REPLACED. FUEL FILTER REPLACED. ENGINE STILL RACES UNEXPECTEDLY.
Friday, April 24th, 2009 AT 5:45 PM

1 Reply

Tiny
FACTORYJACK
  • MECHANIC
  • 4,159 POSTS
It needs to be scanned to determine if the idle air control valve is being commanded open. Could be a faulty ecm, or response to a faulty input that would result in idle being commanded high.
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Tuesday, April 28th, 2009 AT 9:59 PM

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