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1990 Chevy Lumina My car dies at highway speed

Tiny
CHAINRING
  • MEMBER
  • 1990 CHEVROLET LUMINA
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 50,000 MILES
My Lumina dies on the interstate when I let off the accelerator. I have replaced numerous sensors, egr valve, idle air control valve, and two injectors. I was wondering if my problem might be caused by a torque converter lock switch? If not please give suggestions. Thank you
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Wednesday, September 30th, 2009 AT 8:53 PM

1 Reply

Tiny
SERVICE WRITER
  • MECHANIC
  • 9,123 POSTS
Are there any codes stored.

IT could be a tcc problem. You can disconnect the sensor connector and drive it to see it the symptom goes away.

Alos check the connector for the MAP sensor. Typically sets a code if bad enough, but not always.
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Thursday, October 1st, 2009 AT 5:37 AM

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