Cooling fans dont turn on when car is over heating and would like to know how to bypass the relays so i can connect to the battery
A common problem with these is the cooling fan relay that is on the drivers side frame rail close to the radiator ,and the actual fan assembly itself in witch case bypassing it would do nothing, unfortunately ,even more this is a expensive repair fan module is around $300.00 and the relay is about $150.00 and a pain in the rear to change at min- 2 hours labor!
SOURCE: Radiator fan will not kick on in a 07 pt cruiser.
If you are in a hot climate and use the AC year round like I do, it is possible that the fan motor itself is worn out. My 2003 had this occur and it progressed to idling problems before it was resolved.
The motor has carbon brushes inside it which do wear out with use. The brushes are staggered (I dis-assembled mine as a post-mortem). At idle, both brushes are in use. At highway speed only one brush is in use. Directly attaching the battery gave it normal voltage - but much more current than normal. That is why it worked.
My solution is to replace the fan motor with a BRAND NEW one. A salvage part would work, but you run the risk of not knowing how worn its brushes are. New fans are available w/o the shroud and fan blade at many parts stores. Mine took a week on special order and cost around $150 for one with a lifetime warranty. Pretty straightforward to swap out - just make sure the wiring connector is correct before you disassemble the shroud. The replacement motor had the wiring located slightly different, but I was able to easily drill the plastic shroud and re-route the path of the wires.
SOURCE: 2006 pt cruiser, cooling fan motor stays on after
check the fluid in the radiator, and replace the thermostat the way it is positioned it could stop the flow from the radiator and keep the fan from turning off, I have found on several of them that I have worked on that the thermostat was bad. hope this helps. Only other things that would cause this or most common is the antifreeze is bad or the water pump is defective or you have a bad radiator hose but have not seen this on any I have worked on.
SOURCE: cooling fan relay placement 05 pacifica
IF YOU OPEN THE HOOD ON THE RIGHT SIDE THERE IS A SQUAR BOX THAT SITS RIGHT NEXT TO THE BATTERY OPEN THAT BOX AND LOOK UNDER THE PART YOU OPEN AND IT HAS A DIAGRAM AND THE NUMBER WHERE IT GOES
SOURCE: COOLING FAN RELAY
It is located on the side wall of the engine compartment near the bottom of the radiator on the driver's side
SOURCE: 2001 town & country front blower not working
Does that part behind glove box (which is probably resistor) have power going in as well as coming out at both terminals. Take reading on both sides. Did this fan run only on high for a while?
. . If test light does not illuminate, go to step 19). 3,639 views
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