Where is the fan relay switch located in a 1996 plymouth neon highland? the fan won t turn on and causes the engine to overheat.

Your Fan Control Module or FMC is the long black relay located underneath your coolant bulb, It is mounted onto a bracket on the drivers side shock tower, to test your fans you can take off the temp sensor located on the drivers side tank on your radiator, jump the terminals and the fan should come on in low speed, turn your ignition to the on position and jump them and it should turn onto high speed.
The best solution is to wire the fan to a 12v switched power source on high speed.

check the fan relay

fan switch is probly fried from worn out motor--or the heater core is bad--will need to take down dash to replace these--inspect ac evaporator also--details in a haynes manual

could be the fan temp sensor or the van but sensors cheapest

Check for collapsed radiator hose first.

Do the cooling fans come on? If not, check fuse, relay and if still no function- fan thermostat switch.

If fans do come on, replace water pump.

Have your belt condition and tension checked. The alternator works harder with those accessories on, thus a loose or faulty belt will squeal.

your car has two fans one for the motor the other for the ac both fans shooed
come on when the ac is on if not try hot wiring the second fan run a pos & neg
wire to it and see if it over heats it sounds like your having trouble with the fan
switch located in the fuse box under the hood

i hope this helps you
bob

The dodge neon fan switch is located on the front left inner frame behind the radiator, Take note this relay doesnt look like a normal relay, it looks like a module type, heres a picture of it. also take a look at the connector and make sure its not melting or rotted. the most common reason for a relay like this going bad is due to a bad fan, it draws to much, make sure the fan is good, replacing the relay with a bad fan will make the relay go bad in a few months,good day, hope this helps.

check with a 12 volt tester to see if there is power to it if there is replace the fan if not check at the relay

I own a 1997 Dodge Neon. My car started to overheat while idling especially with the air conditioning on. We ended up resolving the problem by replacing the fan relay switch which is located under the battery case near the driver's side wheel well. It is a small black square sensor that is approximately 1 1/2 inches across and about a 1/4 inch thick. It was $50 dollars. However, it took us several repairs to figure this out. We first took the fan out and checked to make sure it was working. An easy test is to turn on the A/C and the fan should run if the A/C is turned on. We connected the fan directly to the battery and it worked fine. We then replaced the collant temperature sensor which is located on the engine cylinder on the driver's side under a few hoses, it was difficult to get to. The last option was to pull the PCM computer and replace it which is an expensive option. New PCM's run around $300.00. Ultimately the fan switch relay fixed the problem. Hopefully this helps!