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Old 03-11-2011, 09:48 PM   #1
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I have a 94 Park Avenue and having trouble with it stalling when you let of the gas. I have an Actron CP-9190, scanned it today and here is what it get; P0123 (TPS) and P0640 Quad Driver. I know that the P0640 is referring to the PCM, I also know what a TPS is. My question is, can a bad TPS cause the PCM code P0640 or vice versa. In other words can one make the other look bad? Let me mention, the car is OBD 1 with an OBD 2 connector if that means anything. I just got the scanner today, so just learning to use it.
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Old 03-11-2011, 09:58 PM   #2
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Old 03-11-2011, 10:03 PM   #3
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Thanks for the tip. So a bad TPS could cause incorrect voltage control from the PCM?
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Old 03-11-2011, 10:07 PM   #4
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