Quote:
Originally Posted by Overboost
Down to Sebring Florida again for LMP3 testing and then down to Miami to measure out the chassis for the data system going into a Porsche GT2 RS Clubsport running Pikes Peak this year. Over 1500 miles round trip and the last 200 miles the CEL popped up.
Looks like P1620 Map Cooling Thermostat Control Circuit Signal High so I guess my thermostat has finished it's duty although the temps were nothing but perfect at 90C. The dealer thermostat has been in there maybe 3 years but I guess it has failed.  |
So a quick follow-up. I had saved the freeze frame and cleared the code when we got home. Popped back up in less than 2 minutes the next time I drove it. I checked my log book and the thermostat was purchased at the dealer just over 2 years ago. I thought it couldn't have failed so fast so I went out and pulled the intake center shroud to have a look at the thermostat wiring and connector.
Wiring looked fine, no exposed or cut wires. Disconnected the thermostat connector and looked at the terminals. They looked spread to the point that no way it could make contact on the pins of the thermostat housing. I tightened the gap on the terminals by gently prying them inward with a small pick and reinstalled the connector. No CEL in 3 days.
Not claiming victory yet but time will tell. After 17 years, one cannot expect the integrity of the factory loom and connectors to not be compromised with age and heat. Fingers crossed...