Drivability question
Engine running at operating temp, tranny in drive, brake applied, rpm around
800 (1000+ in neutral):The engine intermittently surges at idle. No MIL, no codes. Scan tool shows TP sensor at 17% (with no throttle applied).
Engine off, key on, back probe the TPS connector: VREF = 5.05V TP = .91V at 0° throttle opening TP = 4.6V at 100° throttle opening
TP sensor table in book shows .65V at 0° throttle opening, but can be up to 15% higher (.74V).
Question: is the TPS bad?
TIA Bill
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