1989 Mercury Cougar Idles Very High

1989 MERCURY COUGAR
90,000 MILES • 6 CYL • 2WD • AUTOMATIC
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JMCC
  • MEMBER
  • 1 POST
The engine is a Fuel-Injected 3.8L . When i start the car it idles like its going 40mph sitting still. If you shift it into drive it jumped like you stomped on the gas. I don't even try to shift it into gear anymore for fear of ruining my transmission. What causes can i look for.

Thank You.
Feb 25, 2008 at 10:43 AM
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BLACKOP555
  • ✓Experienced Mechanic
  • 10,386 POSTS
Clean your throttle body out and check the pcv valve for plugs and a cracked hose. also check the egr valve.

if thosea are good unplug the iAC if it fixes the idle then the IAC is bad.
Feb 25, 2008 at 12:22 PM
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