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TPS problem

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Old Apr 11, 2012 | 07:03 PM
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aa767man
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TPS problem

Well, i trouble shot the TPS after getting the code P0122, TPS test good. Good voltage, signal, and ground.
I guess the next step is to change out the PMC. If i get a salvage one do i have to have it flashed to my truck?
At this point thr expy will not pass inspection.
help


98 expy 5.4
 
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Old Apr 12, 2012 | 12:26 PM
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I wouldn't be so quick to change the PCM without digging into the wiring going to the TPS. I would also take a chance and change the TPS long before changing the PCM.
 
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Old Apr 13, 2012 | 05:57 PM
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I did change out the tps on the first run. This time i found a site that walked me through the testing of each wire going to the tps. Only thing i havent done was run continuity from pcm to tps. Looking for a pcm plug chart i need pin 89.
 
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Old Apr 14, 2012 | 09:42 PM
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Should be gray with white stripe wire.
Bottom row of connector to pcm, left to right is pin 79 through 104.
 
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