P0123 Code - Holley 58mm is the cause
08-01-2009, 08:57 PM
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P0123 Code - Holley 58mm is the cause I went WOT the other day and threw code P0123 for high TPS voltage. I have heard that this is because my Holley 58 mm will spin past 90*. Are there any cures for this? Do I have to make some type of throttle stop to stop pulling this code?
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08-03-2009, 11:53 PM
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That may be the case, but with Holley TBs they can and will open more than 90%. Various ways to make a throttle stop. I'll have to see if I can get my friend to snap a picture of the one he made for his holley. Ideally you want 0% TPS to be around .59-.7 volts, and WOT to be less than 4.8volts.
08-04-2009, 01:24 PM
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That may be the A, but with Holley TBs they can and will open more than 90%. Various ways to make a throttle stop. I'll have to see if I can get my friend to snap a picture of the one he made for his holley. Ideally you want 0% A to be around .59-.7 volts, and WOT to be less than 4.8volts.
