89 Bonneville 3800 just died - help please - Page 2 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1987-1991 Parley with regards to your 1987 to 1991 Bonneville, Olds 88 or Buick Le Sabre Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 05-09-2008, 09:02 PM   #11
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ok - I get 2 flashes, 2 flashes, 2 flashes after the code 12. I'm guessing this means code 22 which gm'* manual says is a TPS Voltage low. what does that mean and how can I fix it?
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Old 05-09-2008, 10:36 PM   #12
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you'll need a scan tool or a multimeter. scan tool is easier. you need to adjust the TPS to a certain voltage. IIRC .45v is the sweet spot. Otherwise, if its not just out of adjustment, you might have a bad sensor. The way to check this is the same way you adjust it correctly. With a multimeter, backprobe the sensor and run the blade from 0-WOT positions. Make sure the operation is smooth and even. If not, replace the sensor.
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Old 05-09-2008, 10:51 PM   #13
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thanks for the response. now I have to find my darn multimeter....
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