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1990 Mazda 929 automatic choke

Tiny
MARK WILDENBERG
  • MEMBER
  • 1990 MAZDA 929
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 318,000 MILES
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?
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Friday, June 25th, 2010 AT 7:24 PM

1 Reply

Tiny
MHPAUTOS
  • MECHANIC
  • 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)
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Friday, June 25th, 2010 AT 8:20 PM

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