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What is your question?
thermostat opens, then idle increases to approx 1700-1800 rpm no miss,runs fine except for rpm. can bad coolant sensor cause this? like telling ecu temp is cold? no check engine light has done this constant for 2 weeks. sometimes it revs up and back to idle several times before settling at the 1700-1800 mark
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Thanks I have replaced several but probably missed one. Would that cause temp gauge to be erratic? It goes from normal idle to like it would as if on a cold morning, sometimes revs up and down before settling down to high rpm idle. Thank you