Mazda 323,Mazda 626 & Mazda 929 Whether the compact 323, the mid sized 626, or the full sized 929, these vehicles remain very popular even though production has stopped.

1989 323 High Cold Idle

  #1  
Old 01-18-2015, 11:59 AM
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Join Date: Jan 2015
Location: columbus, ohio
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Default 1989 323 High Cold Idle

Hello All
I have checked out many sites for information on this and frankly have not found a good answer
I have a 1989 Mazda 323 non turbo. Engine revs very high at cold temps, at very cold temps it revs to the point that the the high rev limit kicks in, then revs again..... as it warms idle drops, but even when warm seems idle is still a little high.
Thanks
Keith
 
  #2  
Old 01-18-2015, 04:53 PM
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Join Date: Aug 2007
Posts: 1,324
Default

It probably has a slight vacuum leak. Use flammable brake parts cleaner to locate vacuum leaks. Spray it around the intake/injectors/etc. If the idle changes you found a leak. It sounds like the Idle Air Control Valve is working. I would remove the throttle body,remove the IAC valve and clean both. Replace both gaskets and clean the coolant ports out too.
 
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