2004 Cadillac Deville P0121 - GameDay Database Information Guide
About of 2004 Cadillac Deville P0121 - GameDay Database
explaining main issue . iac valve was dirty and clogged and tps sensor wore out internally . client had vehicle cutting off ... Go through one of the possible causes for high idle RPM on a Northstar engine. specifically 2005 I am showing the difference in the two tps sensors . old one is wore out . new one is good and has tension internally. Think your car's throttle has a mind of its own? Could a bad throttle position sensor (TPS) be to blame for limp mode, rough idling, ... This customer came to us after trying a TPS to fix the problem. He said the Welcome on this episode we will be cleaning the throttle body of a
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Last Updated: August 24, 2026
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