Question about 1999 Volkswagen Beetle

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The heating and cooling fan does not respond to the control switch. it will not turn on

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If it was the resistor pack the fan will operate only in the highest speed selection. If all power levels don't work then a metal piece inside the selector knob fell off the assembly housing. In that effect there is no electrical contact to the selector level function. Hopefully you haven't vacuumed your car and loose it. If you found it, it would be another story repairing it and opt for a new assembly unless you're a DIY kind of person.

Posted on Mar 07, 2010

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95 rodeo over heating


most overheating problems are down to the thermostat. if the water system flow is blocked by a faulty thermostat the water is not able to be cooled down bu the radiator. if its over heating and it cools down while driving and gets hot when you stop this would be the fan not turning on. this can be the thermo fan switch, as this controls the fan to come on at certain temperatures.

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You are right,seems like it must be the control switch to me

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Engine cooling relay pulls in when turning ignition switch on, fans do not come on. On fan control module on "main" fan there is a small guage wire in between the power and ground wires, by...


If you are having a problem with overheating then I would be worried about it I have worked on these types vehicles alot and most the time when you turn on the vehicle the fans dont normally kick in until the teperature rises then they will kick in just long enough to cool the engine down then they will turn off then the cycle begains again over and over so you see it is always that when you turn on the vehicle that the fans should turn on. Yes the ets or ects does send the signal to have the fans turned on but if the vehicle does not need to be cooled then they will not turn on. Try idling the vehicle long enough to heat the engine up to a temperature hot enough to turn the fans on you will see they come on then off DO NOT OVER HEAT THE ENGINE THOUGH.

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The electric fan is does not seem to be engaging at low speed causing the engine to overheat when the A/C is on... the engine fan starts and stop irregularly when waiting for the engine to cool down... is...


Hi!!

There should be a fuse/relay box in the engine compartment close to the battery, If your vehicle is equiped with two fans, there should be two relays. There has to be a cooling fan(if equiped with two) that comes in as soon as you turn the A/C on, is your vehicle has one fan, it has two speeds, when the A/C is turned on, the Hi speed kicks in. Sensors in this circuit that are relevant to this function are, Coolant Temp. Sensor, Engine Temp. Sensor.

Check fuses/relays for the cooling fan(s), if OK, check sensors.

Good Luck!! Don't forget to rate this post!!!

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Cooling fans come on with the heater blower motors switch. This can't be factory is it.


Hello and no this is not factory. The cooling fans are designed to come on once the engine tempture reaches a certain tempture to keep the vehicle from over heating. The blower motor switch controls the heat/ac inside the vehicle. There is no reason I can think of for the cooling fans to be tied into the blower motor switch. Hope this is helpful

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Fan continues running after turning off ignition


HI. This will, generally, be the result of the cooling fan switch.

The cooling fan switch on most electric fans monitors coolant temperature signals from the engine control computer. When the engine is cool, the switch opens to keep the fan from spinning. When the engine is warm, the switch closes, thus, turning the fan on for cooling.

I would advise to Inspect the cooling fans(thermal switch),wires and connections. Cooling fan switch problems are often caused by faulty wiring or loose or corroded connections rather than the failure of the switch itself. If the wires or connections are bad, replace them. If you think the switch is defective, it should be tested.

The electric fan cooling switch, or thermal switch, can be tested by placing the element in a bucket of water. Heat the water to approximately 207°-216°F (97°-102°C) and connect the switch leads to an ohmmeter(make sure to keep the switch leads out of the water). The switch should have no continuity until the temperature reaches this level. Let the water cool off below 207°F (97°C) and the switch should lose continuity. If the switch has no continuity at any temperature, replace it.

NOTE_The thermal switch is located on the top of the radiator, usually on the passenger side.


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Dec 16, 2009 | 1998 Volvo C70

1 Answer

1996 Honda Odyssey engine cooling fan stays on.


I don't thing there is a short there is radiator fan switch that control these fan, it works off of heat. There is also a fan relay that control look in fuse box inside the hood for fan relay and make sure its NOT stuck , if it isn't then its the fan switch.This switch may be bad and cause the fan to turn on. Replace radiator fan switch located on water outlet on engine and this should solve your problem. A

May 15, 2009 | 1996 Honda Odyssey

1 Answer

2000 Lincoln LS overheatjng with ac on. My coolin fan is not speeding up when i turn on my ac it runs the same


HI, there are three devices that control fan operation and speed as well. i recommend inspecting these three components for there operational value. test thoroughly and check the wires as well. if you detect any faults within these three devices, replace immediately. I will list the parts to inspect and there respective definitions as well.

Problem spots to inspect--

1.Inspect the Cooling fan switch-- The cooling fan switch on electric fans monitors coolant temperature signals from the engine control computer. When the engine is cool, the switch opens to keep the fan from spinning. When engine is warm, the switch closes to turn fan on for cooling.

2. Inspect the Cooling Fan Control-- This module Reads the temperature of the coolant and passes the information to the engine control computer (ECC). The ECC receives analog information and signals the cooling fan switch to cycle the cooling fan on or off, as required.(controls actual speed as well)

3. Inspect the Temperature switch-- A bi-metal, heat activated, switching device that controls an electrical circuit based on engine metal/coolant temperature. It controls the cooling fan(s), temperature light or gauge, fuel mixture, emissions controls and electronic-control unit functions. It's usually made of brass or stainless steel and uses a tapered pipe thread (NPT) for dependable sealing. replace if faulty.

You will find the problem in one or all of the above discussed areas.

Please rate and god bless:)

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2 Answers

2004 elantra heater control only operates at #4 setting


If # 4 is the highest fan setting it might be the resistor pack that controls the fan speeds.For each speed increase the fan switch takes a resistor out of the resistor loop The highest speed is a direct connection to the battery. The switch is usually located very close to the fan since it gets quite hot and needs to be cooled by the fan.It is also generaly accessible from under the hood,but not always.Sometimes it is under the dash Hope this helps.

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1 Answer

Engine Over heating while cooling fan not responding to cooldown!


Sounds like the temp switch for the fan or the fan motor itself. To check run jumper wires from your batter directly to fan.. If it turns on, then you have a bad switch. If not , your fan motor is bad. I do not have a diagram for your car but finding wires from your fan assemble should be easy. Trace starting from fan. There should be a harness soon after the fan for you to connect jumper wires to to check fan. And by the way it does not matter witch way you hook the jumper wires up. It will only change the direction the fan motor turns. Just make sure you disconnect the harness so that you do not create a back flow of current.The reason for your coolant overflow to be getting excessive pressure is the heat in the system is causing boil over(the car is too hot).

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