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1992 Chevy Lumina code 23 and code42

Tiny
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  • MEMBER
  • 1992 CHEVROLET LUMINA
Computer problem
1992 Chevy Lumina Front Wheel Drive Automatic

what do the codes run in this car. Code 23 MAT is too low and code 42 Electronic spark timing monitor error. What do I need to buy to fixes this car.
Wednesday, August 27th, 2008 AT 6:24 PM

1 Reply

Tiny
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  • MEMBER
  • 120 POSTS
Code 23
mat sensor - signal voltage is low or high
OR
tps sensor
OR
mixture control solenoid - open or short circuit probs

code 42
electronic spark timing circuit open or shorted during engine run
OR
direct ignition system fault
OR
fuel cutoff relay circuit open or shorted to ground.
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Friday, August 29th, 2008 AT 8:45 PM

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