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1994 Ford Crown Victoria LOW IDLE

Tiny
JOHNNYDUGG
  • MEMBER
  • 1994 FORD CROWN VICTORIA
  • 4.6L
  • V8
  • 2WD
  • AUTOMATIC
  • 228,000 MILES
AFTER DRIVING A WHILE, AND TURN HEAT OFF, WHEN STOPPING, CARS IDLE BECOMES LOW, AND WANTS TO STALL. I PUT IN NEUTRAL AT STOPS, AND STILL TOO LOW OF AN IDLE? I'VE HEARD A PLUGGED CATALYTIC CONVERTER CAN CAUSE THIS; WHATS YOUR TAKE ON THIS, HAVING SO MANY MILES ON ENGINE? ENGINE TEMPERATURE IS NORMAL.
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Saturday, March 15th, 2014 AT 12:06 AM

1 Reply

Tiny
WRENCHTECH
  • MECHANIC
  • 20,757 POSTS
You may have a bad IAC ( idle air control) but try eliminating any vacuum leaks and cleaning the throttle body first. Remove the intake snorkel, have someone hold the throttle wide open for you and scrub the back side of the throttle plate and surrounding bore with an old tooth brush and some carb cleaner. Be sure to spray some into the small holes next to the throttle plate. That should help stabilize the idle. If it still has a problem, replace the IAC.
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Saturday, March 15th, 2014 AT 2:37 AM

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