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1999 Dodge Caravan Engine Running at High Speed

Tiny
ERIC D
  • MEMBER
  • 1999 DODGE CARAVAN
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 123,000 MILES
Replaced plugs and wires. Removed throttle body, battery and plenum to replace rear plugs and wires. When the van is started the engines runs at high rpms and will not idle down. Throttle is closed but engine still runs wide open.
Monday, September 13th, 2010 AT 7:58 PM

5 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,139 POSTS
Has the check engine light come on?
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Tuesday, September 14th, 2010 AT 7:31 AM
Tiny
ERIC D
  • MEMBER
  • 3 POSTS
Yes, The check Engine light comes on and the codes are PO122 and PO123 which are both for the TPS. Replaced the TPS and still have the same problem. Could this happen because the battery was removed from the van for a while?
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Tuesday, September 14th, 2010 AT 10:50 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,139 POSTS
That is odd. One is a high current and the other low. Have you checked wiring?
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Tuesday, September 14th, 2010 AT 12:19 PM
Tiny
ERIC D
  • MEMBER
  • 3 POSTS
Got it fixed! It was the plenum gasket. Too much air. Replaced the gasket and all is fine
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Thursday, September 16th, 2010 AT 5:44 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,139 POSTS
Glad you got it fixed. Take care and let us know if you have questions in the future.
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Friday, September 17th, 2010 AT 6:54 AM

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