Adjustable Throttle Position Sensor -- L98 ??

C4 is doing a mild idle surge similar to problem I had 4 years ago. Sprayed plenty of propane at all the hoses and gaskets --even tried Dad's golf club shaft. No obvious leaks.

Last time, fixed it by swapping out the TPS. Plan on doing plugs, an injector clean and then test & probably replace the TPS again this time.

Eckler's has an adjustable TPS with a vernier screw arrangement. Anyone tried this gizmo?? Like it ??

TIA

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PJ
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