1991 Chevy Lumina

Tiny
SSF
  • MEMBER
  • 1991 CHEVROLET LUMINA
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 164,000 MILES
The car starts right up and runs fine on the highway.
When slowing down right before I stop it lunges forward and is hard to stop. Once I stop and put into park it wants to shut off. I put a throttle position system, a MAP system, EGR valve, sprayed 2 cans of carburator cleaner & 1 can of intake cleaner to clean the intake. When I initially put the MAP system in it ran perfect temporarily then started acting the same way again.
Thanks for any assistance you can provide.
Saturday, October 17th, 2009 AT 5:58 PM

2 Replies

Tiny
BMRFIXIT
  • MECHANIC
  • 19,053 POSTS
Check for codes
suspect lock up torque converter solenoid
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Saturday, October 17th, 2009 AT 8:20 PM
Tiny
DOUG RODRIGUES
  • MEMBER
  • 11 POSTS
Could be a leaking brake booster. Are you having problems with the engine dying during stops? Does the engine seem to run rough or start missing as you hold the brake pedal down? Does that condition clear up if you take your foot off the brake pedal?
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Sunday, October 18th, 2009 AT 11:11 AM

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