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Crown Victoria, Marauder, Marquis

2005 crown vic cooling fan problems

12 posts 4 contributors 2,816 views
RA

ranchero74OP

  • Member since Oct 2014
  • 7 posts
  • Pelzer, SC, USA
Oct 14, 2014 at 12:01 PM
I have a 2005 crown vic cooling fan will not come on, overheats at stop light.
I have jumped the fan straight to the battery, and it runs. I have replaced the temp. sensor, checked the fuses, even got a new fan assembly and tried it, didn' work. Does anyone have any ideas?
CU

curemode2002

Oct 14, 2014 at 12:09 PM
So the Vics have a Radiator Fan Relay as well do you know if this has been checked? Looking at all the other information I did not see it mentioned.
RA

ranchero74OP

  • Member since Oct 2014
  • 7 posts
  • Pelzer, SC, USA
Oct 14, 2014 at 12:21 PM
I swapped relays in the box behind the battery, could there be another one that i missed?
RA

ranchero74OP

  • Member since Oct 2014
  • 7 posts
  • Pelzer, SC, USA
Oct 14, 2014 at 12:23 PM
Also, I tried the new fan with engine running and air cond. on, every think I have read said it should be running with air on.
CU

curemode2002

Oct 14, 2014 at 12:23 PM
Not that I have seen in the wiring diagram you may want to try testing the contacts the relay plugs in to and see if you have any shorts.
RA

ranchero74OP

  • Member since Oct 2014
  • 7 posts
  • Pelzer, SC, USA
Oct 14, 2014 at 12:29 PM
Can you use a test light to check it, it is all I have.
CU

curemode2002

Oct 14, 2014 at 2:01 PM
For some of the connections yes but for the ground connections you would really need a multi-meter. Do you have a Harborfreight near you? If you do they have an awesome little pocket multi-meter for under $10.
HO

hondaclf

Oct 14, 2014 at 2:25 PM
there is a fan control module on the fan assembly itself, it could have gone bad.
RA

ranchero74OP

  • Member since Oct 2014
  • 7 posts
  • Pelzer, SC, USA
Oct 14, 2014 at 3:39 PM
I have replaced the fan assembly, replaced all relays, and replaced the temp. sensor.

Yes, we have a harbor freight near us, and I will be there in the moring. I am thinking something is not sending a signal to power the fan. Just don't know enough about it to figure it out.
PL

plstktnkr2

Oct 14, 2014 at 7:24 PM
did you run 12v directly to the fan to see if motor was good?
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