2005 dodge hemi 4x4
I have the hemi in my truck and it is
overheating. I replaced the t-stat about a
month ago when it was overheating before.
Now it is doing it again. If you are driving
about 30+ mph it doesn't go all the way
over. But if idling the gauge goes to the max.
You can hold the cooling fan still with your
hand but it was like that before when it
overheated. I need some advice before I go
and replace a bunch of parts. It worked fine
for about a month after I replaced the t-stat.
If this has a fluid clutch fan on it there should be some drag when you try to turn the fan by hand engine cold, also when you first start the engine you should hear the fan kick in then slowly fade off, if you don't feel or hear either one replace the fan clutch. If this has the electric fan a scan tool can tell you if the fan is getting the command on signal or not, if it is not then the fan control circuits will have to be checked for proper operation, could be a failed sensor.
There isn't any drag on the fan when it's off. I'm assuming that the fan clutch is bad. But it just turns slowly when running. It doesn't run at engine speed. It has an electric fan for the condenser.
But like I said it was like this before the motor started over heating.
It doesn't have any check engine lights either.
Replace it, or switch it over to full electric.
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