cooling fan

Asked by Jul 17, 2016 at 05:06 PM about the 2004 Chrysler PT Cruiser Touring

Question type: Maintenance & Repair

Cooling fan not coming on- replaced a bunch of times, and every time it works for a while then will die... Fan works when I test it out with a ground and a positive wire from the battery. Only overheats when no airflow over the radiator. I just bought a temperature sending unit, but the guy at the parts shop said that there's a good chance that the battery is bad. He asked if my lights dim when I use other electrical stuff on the car, and they do... I'll try replacing the temp sensor first, but does it sound like I'm on the right track? What are your thoughts on the battery advice??

Thanks!
Paul

4 Answers

235

There should be a thermo switch on the radiator, which tells the cooling fan to activate, in conjunction with the cooling temperature sending unit...so you need to verify that the cooling fan (and there may be 2, one for general cooling, the second for A/C activation) is coming on when your temperature, approximately, rises above halfway. You are definitely on the right track, but remember...even a fully functional fan (as you said by testing), will not necessarily turn on, unless the cooling system circuit is operational.... Well that's my best....good luck. .

235

As for the battery dilemma, you need only insure that you have a well charged unit (recent is always good) with very secure CONNECTIONS! The entire system will see an additional load when the A/C is activated (with its dedicated secondary fan), and similarly, the system will see a bit of a draw when your cooling fan kicks on....but with a vehicle that is properly charging, and a fresh battery, there should be no issues. Fans should come on as previously described!

61,215

Check the radiator fan relay?

It's a dual speed fan. Both the high and low speed relays are good. I just switched the temperature sending switch or whatever it's called below the thermostat, so we'll see if that does it. Thanks!

Your Answer

Add photo

Related Questions

PT Cruiser

Looking for a Used PT Cruiser in your area?

CarGurus has 3,890 nationwide PT Cruiser listings starting at $1,500.

ZIP:

Search Chrysler PT Cruiser Questions

Chrysler PT Cruiser Experts

#1 Tom Demyan
Tom Demyan
Reputation 1,990
#2 Gypsy Rose
Gypsy Rose
Reputation 1,280
#3 docwade931
docwade931
Reputation 1,080
View All

Related Models For Sale

Used Volkswagen Beetle
215 Great Deals out of 8,873 listings starting at $998
Used Chrysler Sebring
30 Great Deals out of 3,755 listings starting at $1,690
Used Ford Mustang
397 Great Deals out of 44,403 listings starting at $1,000
Used Ford Focus
747 Great Deals out of 59,013 listings starting at $995
Used Chrysler 300
400 Great Deals out of 22,462 listings starting at $1,000
Used Honda Accord
887 Great Deals out of 82,090 listings starting at $999
Used Honda Civic
704 Great Deals out of 77,526 listings starting at $1,200
Used Ford Escape
1,212 Great Deals out of 90,427 listings starting at $1,295
Used Jeep Liberty
274 Great Deals out of 8,217 listings starting at $1,200
Used Chevrolet Cobalt
45 Great Deals out of 4,794 listings starting at $1,500
Used MINI Cooper
337 Great Deals out of 11,068 listings starting at $1,999
Used Nissan Altima
1,095 Great Deals out of 83,211 listings starting at $670