The Electric rad pusher fan on my 2005 Liberty CRD comes on about 10 seconds after I start the engine, and never shuts off.

I can hear it click on shortly after start up, so its not a stuck relay. Both the rad low and high speed relays are activated. My A/C pump on or off makes no difference. It doesn't matter if its 10 degrees below freezing or 20 degrees above - it still comes on.

If I shut the engine off and turn the key back on right away, the fan stays running with the engine off. If I shut the engine off, remove the key from the ignition, and then turn the key back on, the fan stays off until 10 seconds after I start the engine again.

I'm guessing that some sensor is sending a false high temp reading to the ecu, causing the fan to come on.

Any suggestions?

The only non-stock item on the vehicle is a Transgo shift kit, which I don't think would affect the fan functions . . .

Eric

1996, 2005, 2007 Dodge 2500 4x4 Ext Cab with 5.9L Cummins
2005 Liberty CRD
My four beloved 2006 Mack/Putzmeister Concrete Pumps

your electric fan will run with the A/C on (regardless of the switch on the console)... the A/C runs in the foot only mode, foot/defrost mode, and the defrost mode..

if you turn the cabin fan off and this still happens then i would think there is a problem

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Trevor

'05 Limited CRD Inferno Red Pearl Coat
Home made provent installed @ 35443, SEGR installed @ 35466, Fumoto valve @ 37500, trans and transfer case skid, In tank pump installed @ 43500, Suncoast TC & Transgo Shift Kit @ 44730, EGT, Boost, Trans temp gauges, Samco hoses, Rebuilt Trans w/ HD454RFE kit @ 56K, Inmotion Stage 2 @ 56K