2009 Jeep Grand Cherokee Q&A
2009 Jeep Grand Cherokee Question: Check engine light, ETC warning light come on; temp gauge drops to 0; why?
Problem seems to cycle - driving along, suddenly the check engine light comes on along with the electronic throttle control warning light, as the temp gauge drops to zero - which triggers the Check Gauges warning light to come on. Drive more, stop a few times, ETC light goes off, temp gauge starts working again. Check engine light stays on for a while, then goes off. Some miles/hours later, cycle repeats. No indication of trouble in engine behavior, sound, etc. Tried replacing gas cap (2x). Dealer replaced thermostat. Still going on. Any ideas? - Mitchkeos
have codes scanned and post so we can adv - globalhelper
could be a cts problem [coolant temp sensor] I agree with #1 check to see if there are any codes - goodguy