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The radiator fans turn on when the engine starts and do not turn off. No problem getting heat, but the temp gauge tops out at 1/4, used to be 1/2.
The issue seemed to start after I replaced the air bleeder housing (with new temp sensor), so could the sensor be off? But why would the fans turn on if the engine appears to not warm up enough?
Maybe the fan relays are bad?
Just replaced the thermostat, no change.
Thanks for any assistance!
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if the issue was not there b4 u replaced an item logical conclusion
the issue seemed to start after I replaced the air bleeder housing (with new temp sensor),
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Dealer trained Tech 15 years Now Proud Owner operator Kevin's Mobile Repair in ATLANTA. Repairing Chrysler,Dodge and Jeep KKeller608@aol.com http://kevinsmobilerepair.com
If anything about this car was logical the thermostat would not be where it is.
Does the temp sensor in the bleeder housing only control the gauge, or does it also control the radiator fans?
If the fan relay is bad, could it cause the fans to always be ON?
Since the fans run constantly, is this causing the temp to not reach normal?
In short, what possibilities would cause this to happen?
You're right, this doesn't make a great deal of sense. There is only one source of information regarding coolant temperature, and that is the sensor you replaced. Its signal is read by the engine computer and is one of the factors controlling the fans, A/C operation and automatic transmission fluid temperature being other factors. The same signal is processed by the engine computer and forwarded to the body computer to control the readout of the temperature gauge. So you'd think that if the sensor was reading high enough to keep the fans on, the gauge would also read high.
All that being said though, if there's a failure somewhere along the line, the default is to turn the fans on to provide cooling in case of doubt.
So if the fans are running all the time, the chances are the computer is not happy with the signal it's getting from somewhere and is running the fans "just in case".
This might show up if you could hook the car up to the proper diagnostic equipment.
I doubt that the fans are making the car run cooler than it should. The thermostat should control that.
There's probably a pretty good chance that replacing the temperature sensing unit would fix the problem, especially since installing it seems to have precipitated the problem.
Could the fan relays be stuck on? Maybe. Not real likely, but not impossible. There are two fan relays, one for each fan, so it's not likely that both would fail in the same manner at the same time.
'05 2.7L Sebring Radiator fans always ON
