1995 Buick Lesabre

Tiny
EJ36
  • MEMBER
  • 1995 BUICK LESABRE
  • 4 CYL
  • AWD
  • AUTOMATIC
  • 10,000 MILES
When stopped and while driving my car idles up and down, and shakes as if sometimes the car is going to cut off. It also makes a rattiling noise when im stopped, also radiator light has been coming on but car does not run hot what could this be.
Thursday, December 11th, 2008 AT 8:38 AM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 110,176 POSTS
Hi:
the idle problem sounds like a throttle position sensor problem. However, don't replace it until we are sure. Have the computer scanned at a nationally recognized parts store. They will let you know if there are any codes, and most will do it for free.

As far as the rattle, check the shield around the cat converter. Make sure it's not loose. If it is, use hose clamps (tied together) wrapped around the shield to draw it tight.

The coolant light may be coming on due to a very low idle, or a bad temp sending unit. Pay attention to it to see if it only comes on at a low idle.

Let me know what you find.

Joe
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Wednesday, December 24th, 2008 AT 7:39 PM

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