1990 Mazda 929 automatic choke

1990 MAZDA 929
318,000 MILES • 6 CYL • 2WD • AUTOMATIC
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MARK WILDENBERG
  • MEMBER
  • 1 POST
every morning when i start my car it goes from about 1000 rpm to 2300-2500 and then it will drop out and for about ten minutes until the engine is warm the car will just keep revving up and down ,the needle will go up and down like i am pumping the accelerater continuously for about ten minutes until engine is warm what do you think is wrong?
Jun 25, 2010 at 7:24 PM
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MHPAUTOS
  • AUTOMOTIVE REPAIR CONTRIBUTOR
  • 31,937 POSTS
Hi there,

I would get a scan done to check for any unresolved fault codes, i would be checking the coolant temp sensor and the idle control motor, start here.

mark (mhpautos)
Jun 25, 2010 at 8:20 PM
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