• Auto Parts and Repairs
  • Honda Prelude
  • Ford Expedition Eddie Bauer
  • Honda Prelude SI

How does the rad fan on a 1986 Honda Prelude come on?

User Avatar

Wiki User

βˆ™ 2015-07-16 19:22:12

Best Answer

There is a temperature switch on the passenger side bottom of the radiator that has a wire connector attached to it. The switch screws into the radiator and then the wires connect to that. That switch is what tells the relays to turn the cooling fan on. If your fans don't turn and the engine is running hot you can test the switch using the following steps. 1. turn the ignition to the on position but don't start the engine. 2. disconnect the wire connector to the switch on the bottom of the radiator. 3. using a small jumper wire, jump the two wires inside the connector. If the fans turn on then you will need to replace the temp switch. If the fans still don't turn on then you will need to check the fuses, relays, and the fans themselves.

2015-07-16 19:22:12
This answer is:
User Avatar

Your Answer


Related Questions

Why would the AC fan rumble on a 1999 Honda Prelude?

damaged fan blade.replace with oem fan assembly.

How do you change the radiator fan in a 85 Honda Prelude?

Unscrew the bolts that connect the fans 2 the radiator then unplug the plugs and it should come out..

Why would the fan and radio not work most of the time in a 1988 Honda Prelude?

I just went through that exact problem with my 88 prelude, it was the ignition cylinder.

How do you replace the fan motor on A 97 Honda Prelude?

You cant replace it, it's all in one piece.

Where do you plug the cooling fan in on a Honda Prelude?

Stand in front of the car facing your back to it and then bend over...the cooling fan will plug in itself.

1992 Honda prelude why is the fan continueslly running for a few minutes even you turned off the engine?

Honda cars are designed to do this. When the engine is warm the fan will run up to 15 min. after turning the engine off.

Can a non functioning heater fan cause the engine to overheat on a 1993 Honda Prelude?

not likely as the heater fan only controls the air in the cabin, maybe the radiator fan has gone out too?

How do you remove a blower motor fan in a 86 Honda prelude?

blower motor is under the passenger side dash board 3screws and it comes out there should be a ta on the fan pry it out towards the finsof the fan and the fan should come off might want to spray with some wd40 should help probable on there rilly tight

I was driving my 1991 Honda prelude and hit the oil pan on a speed bump and now its starting to knock why is it knocking?

fan is hitting where the dent in the oil pan is

Is there a reason your Honda prelude has two fans on the radiator with a new relay switch yet only one seems to come on?

One fan only comes on when the A/C is activated and runs continuously as long as the A/C is on. The other fan only comes on when needed to cool the engine down as in city driving.

Where is the condenser fan relay located on a 1992 Honda Prelude?

It is bolted to the driver's side front of the engine bay right near the AC Dryer. There are two relays there one for the AC Clutch and one for the condenser fan.

When 1990 Honda is running cooling fan does not come on but comes on when shut off thermostat and temperature switch changed?

When 1990 Honda is running cooling fan does not come on but comes on when engine is off and I thermostat and temperature switch changed?"

Where is radiator fan relay on a Honda Civic 1995 ex model?

better if come with a dia.

Where is the cooling fan switch located on a 1986 Honda CRX?

If you are talking about the coolant temperature switch that turns the fan on when the coolant reaches the right temperature, then mine it is located in the bottom of the radiator directly under the fan.

Why doesn't a 1989 Honda Accord radiator fan come on except with the AC on?

Check the thermal relay.

Why wont the Condenser fan and cooling fan not come on Honda accord?

Probably because either the fuse or circuit breaker or the temperature sensing switches have failed.

Why won't a cooling fan turn on 1996 Honda Civic?

There could be 3 or 4 reasons for this... First, check the simplest thing, the fuse. Next, check for a faulty fan thermostat or damaged wiring to the fan. Lastly, it's possible the fan motor itself is faulty. i come to find that if your Honda civic has a coolant leak and runs hot...... your thermostat will be stuck in the closed position and wont allow the coolant fan to come on

Your cooling fan doesnt come on what to check for 1998 Honda civic?

Check the cooling fan relay and the control sensor. Check the fuse as well and if these are all good, check the fan motor.

Why would a cooling fan not come on in a 95' Honda Civic EX?

Blown fuse. Defective fan motor. Defective thermal relay. Wiring problem.

How do you bypass fan switch on a Honda civic?

on a 2003 Honda si the fan motor blows shen removed from car. there is 12 volts to fan . fan will not run when plugged into car. does fan sw have anything to do with this

Cooling fan doesnt come on 2002 Honda civic lx?

Check the integrity of the wiring. Determine if the fan motor is burned out. More likely, the sensor has malfunctioned. Unplug the sensor (engine off) - the fan should come on when the ignition is turned on. If it does, the sensor is bad.

Where is the heater blower fan located 1996 Honda Accord?

Where is the heater blower fan located 1996 honda accord?

Why does the fan come on as soon as you start a Honda accord 98?

It the A/C is on the fan will run continuously. Turn the A/C off and if the fan still comes on as soon as you turn the ignition on, the thermal relay may be stuck closed.

I have a 650 Honda rincon four wheeler and the cooling fan does not come on. Any Ideas?

Mabye if you cleaned the fan out it might start to work again or the wires aren't connected.

97 Honda civic heater fan not working?

There are a couple of reasons why a Honda Civic heater fan is not working. The fan motor may of blown or a fuse needs to be replaced.