1990 Ford Aerostar ENGINE REVS UP AND DOWN IV ALL SPEEDS

Tiny
MIXER11
  • MEMBER
  • 1990 FORD AEROSTAR
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 160,000 MILES
ENGINE REVS UP AND DOWN IN ALL SPEEDS LOPES WHEN IDLEING AND DIES
Saturday, September 27th, 2008 AT 2:27 PM

1 Reply

Tiny
MMPRINCE4000
  • MECHANIC
  • 8,548 POSTS
Remove and clean the Idle Air Control Valve, the pintle on the valve and the base.

I would also check for any vacuum leaks.

I would also check the fuel pressure witha mechanical gauge and change fuel filter, if it has been longer than 1 year.
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Tuesday, November 11th, 2008 AT 7:58 AM

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