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2001 Mercury Cougar Idle Problems

Tiny
JOWHITE38804
  • MEMBER
  • 2001 MERCURY COUGAR
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 132,000 MILES
When the car is in park it idles at around 300 to 400 rpm, spits and sputters, and tries to go dead. While driving it still sputters when you give it gas. The catyletic converter and oxygen sensors were replaced about a year ago. Could this problem be the fuel pump or filter? Its so bad now that we dont attempt to drive it.
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Friday, February 6th, 2009 AT 9:51 AM

3 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Do you have a check engine light and when was the last tune-up?

Try cleaning out the idle air control valve and test the throttle position sensor's voltages to include a check on the PCV and EGR valves
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Friday, February 6th, 2009 AT 12:25 PM
Tiny
JOWHITE38804
  • MEMBER
  • 3 POSTS
Yes the light is on. It came on about a month ago when the problem first occured. I changed the oil, put injector cleaner in, filled up with premium, and reset the light. The problem didnt go away however the light stayed off for about a week before coming back on.
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Friday, February 6th, 2009 AT 12:34 PM
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Sir, You need to have the computer scanned for OBD2 code/s you can go to Autozone and get read for free and then comeback with it, this is our starting point.
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Friday, February 6th, 2009 AT 4:13 PM

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