1999 Mercury Tracer Engine Problem

1999 MERCURY TRACER
140,000 MILES • 4 CYL • 2WD • AUTOMATIC
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VAULT_DWELLER_13
  • MEMBER
  • 1 POST
When I start the engine and rev it up a bit the car runs but once I take my foot off the gas pedal, the car dies. I have no experience with this sort of thing so does anyone know what might be wrong?
Jan 5, 2015 at 1:22 PM
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WRENCHTECH
  • ✓Experienced Mechanic
  • 20,760 POSTS
First eliminate all vacuum or air leaks in the system. You may have a bad IAC ( idle air control) but try 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.
Jan 5, 2015 at 6:13 PM
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