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1990 Chevrolet Lumina
Problem for Chevrolet 1990 Lumina

1990 chevy lumina 3.1 ltr runs for 5 mins, then




By kleinlid on Sep 14, 2009

" "
1990 chevy lumina 3.1 ltr runs for 5 mins, then guits, codes 32 & 43 says 02 sensor, check circuit fuse a relay could be defective, and check circuit wiring, Where is the fuse for the 02 sensor located and the relay ? also where is the wiring for the 02 sensor located ?
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Solution #1

posted on Sep 15, 2009
Not Rated)

outdoorsman5
outdoorsman5

Rank: Guru  Chevrolet Cars  Expert
Rating: 91%, 212 votes
I would check back pressure to Catalytic converter. Sounds like it could be plugged off. You have to plumb a gauge ahead of the converter and check the back pressure.
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