Re: Radiator Fan Not Working
Your electric fan WILL turn on with your A/C switched on, I was 100% certain it did BEFORE I went out to test it simply so I could say I tested it. So for clarification, I just tested it on my own rig, and the electric fan turns on with the A/C on.
Having said that Matt, as I already suggested, when its hot out I run right at the middle hash mark, when its cool I run just mm or 2 below, with a known fully functional fan. It has done this for the 1.5 years I have had it, first noticed while I was towing and it freaked me out for a second but it has NEVER gone above the 1/2 hash mark. Not to say that a new temp sensor may not resolve the gauge issue as I think there is a resistance range where it sits at the 1/2 mark, this way the user doesnt see temperature fluctuations, but if the sensor or circuit wears just beyond its happy zone you may see some gauge fluctuation. Ultimately the temperature sensor is an NTC thermistor, as the temperature goes up the resistance goes down, so that pretty much scratches a circuit fault unless somehow the minimal resistance in the circuit finds a way to get even less on the same size wire. So your looking at a gauge concern, or a temp sensor concern... or its just straight up normal and someone at chrysler dropped the ball on this one... either way your cooling system is likely working just fine.
2005 Jeep Grand Cherokee - Gone but not forgotten!