1991 Chevy Lumina Stalls

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NCMCMILLIAN
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  • 1 POST
My 1991 Chevy Lumina stalls every once in awhile. Any ideas what would make it stall like that?
Jan 5, 2007 at 11:35 PM
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SERVICE WRITER
  • ✓Experienced Mechanic
  • 9,123 POSTS
Many possiblities. but i would start here.
I would try what I call an air induction service.
I like to use castle hydroblast. You spray it into a vacuum line such as the brake booster line if nothing else is accessible. Full spray for 3 minutes, stall the engine with it or have someone kill it while your spraying. Let it set for a few hours then take for a short drive in low gear, revving the rpms to help break it up. First use Castle cleansrite to clean the throttle bore. Try to get the throttle plates scrubbed good with a brush, while your spraying. Use a rag to wipe the carbon out between brushings. Seafoam is another good product, but smokes a lot.

IF you can't find Castle, here is my rep's email:
robw@castlepackspower.com
Jan 5, 2007 at 11:50 PM

Suggested Repair

Clean the throttle bore and plates, then perform an air induction service with Castle Hydroblast (or Seafoam if Castle is unavailable). Let the cleaner soak, then drive briefly in low gear while revving to help break up deposits.

Conversation Summary

The owner of a 1991 Chevy Lumina reports that the vehicle stalls occasionally and asks what could cause it. The expert says there are many possibilities but recommends starting with throttle-bore cleaning and an air induction service using Castle products, with Seafoam as an alternative.

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