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1993 Old Cutlass Supreme - High Idle on Start Up

Tiny
JNASHLBL
  • MEMBER
  • 1993 ALL OTHER MAKES ALL OTHER MODELS
3.1 ltr, automatic, about 107K miles. Upon starting the car the idle is @ 1500 rpms then climbs @ about 2000 engine light comes on. If I turn the car off and restart it once or twice it will sometimes idle normal but when dropped into gear will often drop below 1000 rpms and stall. This is an intermittent problem. After car is driven for a short while and turned off for a short while and restarted it will sometimes stall before gear is engaged. Replaced MAP, plugs, and wires. Any other suggestion or do you need more details? Thank you for any help you can give.
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Monday, January 16th, 2006 AT 12:02 AM

2 Replies

Tiny
BOB77
  • MEMBER
  • 26 POSTS
I had the exact same problem on a similar vehicle and it turned out to be the TPS [throttle positioning sensor]. Had it replaced and the engine ran like brand new after. Hope this helps.
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Monday, January 16th, 2006 AT 11:24 AM
Tiny
JNASHLBL
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Thanks Bob.I'll look into that right away. I'll let you know!
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Monday, January 16th, 2006 AT 12:51 PM

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