What can cause both radiator fans to not come on?
I have a 1988 oldsmoble cutless cirra wih same problem I have replaced the colant fan switch and the coolant fan relay but to no avail have not solved this problem however the fan on the back side of the radiator does come on when I turn the key off but the fan on the front side of the radiator never comes on any help yet??? You might need a diode wire. *You may have a blockage in the coolent system which can prevent the flow of the hot coolent to the radiator fan switch. Check the temprature of the upper and lower radiator hoses carefully by touch. If the one of the hoses is cool while the other is hot there may be a blockage.
1996 Pontiac Grand Prix 3.1L has 2 cooling fans. Fan1is working with AC and radiator Cooling. When Fan2 should be started?
First remove both of the radiator's upper and lower hoses, then remove the two bolts that hold the brackets that hold the radiator in place. Unplug both fans electrical harnesses and the small hose that connects to the radiator overflow reservoir. Now you should be able to pull the entire radiator out of the car including both fans that are held to the radiator by four bolts each.
1993 Camry If the radiator cooling fan switch has been replaced what else would cause the cooling fans not to operate when the engine overheats?
What do you mean by ``switch``? Coolant temp sensor could be bad, Fan relay could be bad, or fans could be bad. Is radiator completely full? An air pocket could cause problems. By switch I mean the temp sensor located on the radiator itself. I have put direct voltage to the fans and they operate. The radiator is new and full of antifreeze. On this particular model there are two boxes with relays and fuses…
Why do the fluid in the radiator tank goes low and the temp rises to cause the fans to come on and there is fluid still remaining in the reservior tank that does not pull over to refill the radiator?
You replaced the batery on your 1997 dodge caravan and the radiator fans were on all the time even with the key off but now the fans will not come on?
91 lumina z34 with a 3.4 L engine the radiator fans will not come on and just replaced the engine heat sensor and the fuses are ok but the fans still won't come on even when engine is warm?
It is possible that both cooling fans coming on when the car is idling is normal. The fans are supposed to come on in response to the heat of the engine. So, if the car was idling for a long time, both fans may kick on and there are other conditions which would explain it as well. If it seems that the car is overheating however, you should have it checked out.
Disconnect the upper and lower radiator hoses and transmission lines from the radiator. This will cause all the water and very little transmission fluid to leak out. Unplug the radiator fans (two connectors). Be sure and disconnect the fan wiring from the radiator. Take the two nuts off the top brackets holding the radiator in place and then just pull it out. Simply remove the fans from the old radiator and put on the new…
1990 Passat GL wagon radiator fans and AC not working Blower works fine Any ideas Thanks this place is awesome.?
fans come on with radiator fan switch when hot, and also when A/C is engaged... if theres no freon or A/C relay or Compressor Clutch(electrical) units arent working the fans won't come on...if the fans come on when engine's hot, the A/C system needs a check... a manual will help with diagnosis and repair, and a shop manual should be available at the local library in the reference section, make copies of the right pages…
There could be three reasons that the radiator fans do not come on. The fan motor itself has failed. This can be tested by connecting power directly from the negative and positive cables of the battery to the corresponding connectors on the fan wire. The temperature sensor has failed. This is located at the bottom driver's side of the radiator. The sensor is round with a large hex head. It screws directly into the radiator…