need help - high idle, w'ont start
09-16-2006, 09:55 AM
#1
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need help - high idle, w'ont start Starts okay with engine coolant temperature gage reading normal and normal idle, after a few minutes driving ECT gage drops down to the peg at zero, and idles between 1500 and 2000 when coming to a stop. Eventually idle drops down if I sit for a couple of minutes at a stop.
Checked ECT sensor, and see no obvious signs of damge, connection is good, wire harness looks okay.
This morning on a warm start ECT gage started out on the zero peg and car wouldn't start. (normally starts at touch of ignition) Got it to start by flooring gas pedal. Ran like ****. Had to keep the revs up or it would stall, and was missing when accelerating.
Bought the car about a month ago. Only change I made was to put cats on so I could pass emmissions test (prevous ownder had cats bored out).
Should I change the ECT sensor? Is it possible the cats are blocked? Do you have any suggestions?
Checked ECT sensor, and see no obvious signs of damge, connection is good, wire harness looks okay.
This morning on a warm start ECT gage started out on the zero peg and car wouldn't start. (normally starts at touch of ignition) Got it to start by flooring gas pedal. Ran like ****. Had to keep the revs up or it would stall, and was missing when accelerating.
Bought the car about a month ago. Only change I made was to put cats on so I could pass emmissions test (prevous ownder had cats bored out).
Should I change the ECT sensor? Is it possible the cats are blocked? Do you have any suggestions?
09-16-2006, 10:09 AM
#2
TECH Addict
I haven't had this problem on my 99, but I did have it on the 89 Camaro I used to have and the symptoms were the same. Coolant temp sensors should be cheap anyway.