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1993 MPV surges when cold and will not come off of high idle

Tiny
ELMER VAN DYK
  • MEMBER
  • 1993 MAZDA MPV
  • 120,000 MILES
Van surges when cold and will not come off of high idle

Friday, October 7th, 2011 AT 6:53 PM

2 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Check the operations of the IACV and clean the throttle plate and also look for vacuum leak

Also go to this link for more information: https://www.2carpros.com/articles/engine-surges
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Friday, October 7th, 2011 AT 7:16 PM
Tiny
ELMER VAN DYK
  • MEMBER
  • 3 POSTS
I should mention that when I said cold I meant the ambient temperature. In warm weather the van operates normally. The surging and high idle occurs when the temperature falls below freezing. I have changed the temperature thermistor already and it has made no difference. No matter how long we let the van run, or how warm it gets(we drove 5 hours) it does not come off high idle. Any help you could give would be appreciated.
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Sunday, October 9th, 2011 AT 9:02 PM

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