Hi mike5135,
I don't think it is the TPS. Problem should be excessive air getting into the manifold and usually it is caused by the EACV or vacumn leakages.
Check the EACV and ensure its coolant passages are not clogged.
Check the coolant level in radiator, insufficient coolant can cause the problem as well.
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Wednesday, July 1st, 2009 AT 12:32 PM