Great. Thanks for that info.
First off, the code 67 is - Neutral Drive Switch Circuit Open. This probably is indicating that the neutral drive safety switch is faulty and needs replaced. The purpose of the switch is to prevent activation of the starter (by creating an open circuit) when the transmission is in any gear other than P (park) or N (neutral).
Possible causes for the code 53 are the TPS is not seated properly, faulty TPS sensor (not likely since your sensor is new), faulty ECA, or VREF circuit shorted in vehicle harness. Double check the wiring and installation of the TPS and post your results. If you need some installation instructions for this component just let me know and I will post for you.
Hope this helps.
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Wednesday, January 7th, 2009 AT 1:02 AM