ok here is the problem i have a 02 pt cruiser that is over heating i replaced the termostat and the flushed the radiator and it still over heats after letting it sit for a while i noticed that the fan doesnt turn on i was told that it could be the relay or the fan sensor. can anyone tell me how to find both of them and how to check if they are working.
last time i posted here i got really good response and step by step intructions tahnks for all your help you guys rock hector
If the vehicle only overheats in stop and go traffic or at slow speed driving you have a fan issue. Turn the A/C on and see if the fan turns on as soon as you hit the button, if it doesn't more then likely the fan motor is bad. This fan module is designed to turn on with the a/c immediately and then the second phase of the fan will turn on at 219 degrees and shuts off at 210 degrees at idle
Glenn Beasley Chrysler Tech
The obvious choices are a bad fan relay, or a bad coolant temperature sensor. A less obvious possibility is the control module or wiring between them. Does the fan go on if you remove the connector from the CTS? If not, then I'd replace the relay. If it does, then I would try to he CTS. Both are easy and fairly cheap to replace.
Bob
When you turn on the A/C, and the fan comes on, does the engine temp cool down, or remain hot?
-KM
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