2001 Dodge Durango electric fan problem. My electric fan works when the a/c is on or when I unclip the wire harness from my coolant temp sensor but doesn’t come on when the motor gets hot I’ve already replaced the coolant temp sensor and swapped the relay

SOURCE: have a 2001 Dodge Durango.

ck for flow across rad, should be warm evently, or its plugged

SOURCE: cooling fans on 2001 chevy malibu will not come on unless ac on

the relays control circuit is grounded by ECM (computer) . to check this make sure the is hot enough for the fans to be commanded on by computer and check to see if you have voltage at relay and it has ground from computer . you may need ECM.
good luck

SOURCE: radiator fan not working replaced relay,temp

Check the wiring from the relay to the fan motor, and check the wiring from the fuse block. Basically check all wires that supply power to the fan motor, use a volt meter. Fan Relay (behind headlight, under battery) on the 2001 GC 4.0L are a piece of ****, I change mine almost yearly. The problem is their location, a high heat area prone to the elements. I understand that 2002 and newer, the location was changed and the problem solved. Relay might close the circuit when cold or at reasonable temps, but might open a circuit when it heats up, causing the problem.

Marvin

• 85242 Answers
• Posted on Sep 28, 2009

SOURCE: electric fan on radiator runs whenever engine is

this is either a sticking fan relay or the sensor is in the thermostat housing, try the relay 1st.

SOURCE: electric cooling fans will work.

The fans are actuated by coolant temp in the radiator. It is possible to have overheated coolant in the radiator, causing the steam, and your engine not overheating...the temp sensor for your engine is reflecting the engine temp, not the temp of the coolant in the radiator. You problem could be a bad temp sensor at the radiator...not allowing the fans to come on. Good Luck! I hope you find this to be very helpful!