Still running cold
#1
Still running cold
I just changed the thermostat, in hopes that was the cause of my Durango running cold. According to the gauge, it runs between 170-180. I put a 195 stat in, and the one I took out was also 195. I think the gauge is right and telling me it's not getting up to temp. The top radiator hose gets warm, but not as hot as I think It should. I can easily hold my hand on it. Could the coolant temp sensor be the culprit? I have no codes
#2
go double check the box the new one came in. also it could have had the wrong stat in the box. or a mismarked stat at the factory. some free info. many years ago i read an artical from chrysler saying to drill a 1/8 hole in a stat. this lets air escape letting the coolant go through the system. this IS a chrysler approved mod. i have done this for decades. but only drill a 1/8 size more is NOT better.
#4
The hole aids in burping air out of the system without the thermostat getting hot enough to open. I suppose it would also let a small amount of coolant to bypass the thermostat in the event that the thermostat failed to open but I don't think 1/8 inch is going to do a significant enough amount of cooling to make much of a difference.
#5
#6
That makes sense. But I don't think I have an air bubble, because then at least it would warm up to where its supposed to be. Is there a chance my gauge is wrong, and my motor is up to temp and there is another reason why heater doesnt get warm like the heater core needs back flushed or something. I really think its the motor temp though, it just doesn't put off as much heat as I remember like when I open the hood.
#7
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#10
See I thought about that. I replaced mine with a severe duty from autozone, which I later learned was a bad move. Even after driving for twenty minutes when it's cold out, it never completely shuts off, and I don't know if it's normal. And in warmer temps lt would take forever to come off full blast.