The temperature guage on the car would sometimes drop from normal operating temperature to zero and then after a 5 to 45 minutes, would pop back up to normal. No MIL codes were showing.
I got a new engine coolant (ECT) temperature sensor and installed it. After that I got three MIL codes:
35 Cooling fan relay circuit open or shorted
17 Engine stays cool too long
22 Coolant sensor signal out of range
After that happened, I checked the resistance of the ECT sensor: result was 5,000 ohms and the repair manual said it should be about 15,000 ohms. So it was the wrong part.
I put in the correct ECT sensor (15,000 ohms) and a new thermostat but the codes remain. The temperature guage is working okay. I tried disconnecting the battery thinking it would reset the engine computer.
Also, I have a MIL code 43 Peak primary coil current not achieved with max dwell time. This code was there before the other codes came up and is still there.
Has the wrong ECT sensor damaged the engine computer?
have the same problem?
Monday, December 15th, 2008 AT 12:46 PM