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911st 911st is offline
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Join Date: Jan 2004
Location: Sacramento
Posts: 7,269
Not an expert on this but here is my two cents.

First the factory 930 TPS will not work on an EFI system as it is more or less an on/off switch.

I suspect you should be able to test the TPS for faults with a Volt Ohm meter. Could be a bad connection and not the TPS.

Most likely they welded a shaped shaft extension onto the throttle shaft that fits the TPS. This shaft should slip into the TPS. Thus, you should be able to just remove the TPS and it should just slip off the shaft.

Note that the bolts behind the TPS might be three to act as spacers and might fall out when the screws are removed.

This is just a guess but could the TPS not be aligned properly and the range of values the ECU is receiving is not as expected?

Again, not my area of knowledge.
Old 08-14-2010, 08:38 AM
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