1997 Buick Lesabre Stalling

Tiny
BRYCER56
  • MEMBER
  • 1997 BUICK LESABRE
  • 3.8L
  • V6
  • FWD
  • AUTOMATIC
  • 229,000 MILES
My car had stalled on me so I used a code reader and it said MAP sensor and tps had issues. I replaced both of the sensors. Both codes went away but now is says tps circuit low input. I don't know how to fix it. Cars rpms have been running higher than normal. When I come to a stop it doesn't idle very well and it sometimes shuts off on me. When that is happening the voltage matter mobes back and forth. A.C. On at idle makes car run worse.
Saturday, June 27th, 2015 AT 6:15 PM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 110,176 POSTS
First, make sure there are no vacuum leaks. Next, check to make sure the wiring to the sensors you replaced are clean and tight and free of corrosion. Next, check the idle air control valve (IAC). The IAC is responsible for maintaining the engine idle speed and increasing it when the AC is on.
Was this
answer
helpful?
Yes
No
Saturday, June 27th, 2015 AT 9:57 PM

Please login or register to post a reply.

Related Engine Stall While Driving Content

Is it Safe to Drive Check Engine Light?
VIDEO
Is it Safe to Drive Check Engine Light?
Instructional repair video
Engine Stalls While Driving
GUIDE
Engine Stalls While Driving
An engine that stalls while driving and then starts back up again, either immediately or after a short time is different from an engine that just wont start or if the...
VIEW MORE