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Have your battery tested. If the fans ran all morning, too cool down your van it probably killed the battery. Also keep an eye on your temp gauge, and make sure it's not overheating. The temp sensor for the fans could also be faulty ; causing them to run longer than they should when you turn the van off.
How long does it run after shut off?Does it shut off at all or just run forever? If it ends up shuting off at some point after shut off, then I wouldnt worry to much bout it. The fan will run until the temperature sensor tells the computer that your engine is cool enough whether car is off or not. If it never shuts off then that'd be different : ) can honestly say I haven't seen that b4 but I'd say start at the temp sensor chk for voltage readings and see if they are within specs for your vehicle. Maybe sending constant signal to computer. Hope this helps you out.
The fan should shut down after the radiator temperature is between 180-195 degrees. If yours is staying on way below this I would think you temp. sensor is stuck and keeping your fan on.
I would hate to tell to replace any parts without doing some testing , The cooling fan is controlled the PCM - engine computer through the CCRM - constant control relay module . The only thing i can would suggest is you have it hooked up to factory scan tool to check for DTC'S - diagnostic trouble codes an have scan data looked at . Different sensor inputs to the PCM , ECT - engine coolant temp sensor, IAT - intake air temp etc.... If there are no codes ,check power an ground circuits of the PCM . If the cooling fan stayed on all the time i would say the CCRM was bad , still could be , but with out testing this is just a guess . Do you know how to do automotive electrical testing using a test light , volt meter ? How to read an use a wiring diagram ? You can find free wiring diagrams here http://www.bbbind.com/free_tsb.html Enter vehicle info . year , make , model an engine ! Then under system click on engine , then under subsystem click on cooling fans . Good luck !
Does it eventually shut off or does it constantly run 24/7. If it only runs for a few minutes or so after vehicle is off it usually is cooling the engine after running for so long.
If the fuse is blowing there is too much resistance in the cooling fan moter. Replace JUST the cooling fan motor and the fuse. The A/C always turns the cooling fan ON when turned on. That is why the A/C messes up when the fan motor is bad. Replace the fan motor and the A/C problem will be fixed too. :)
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