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[Benino]

My sister has a 1997 2.0L ford escort. The radiator fan has decided to stay on. I would help her but she’s 3,000 files from me. Does anyone have an escort? Where is the thermal switch that senses temp. and tells the fan when to turn on? I posted on a couple general auto forums and nobody answers me. I'd have her test that but she doesn’t know enough about cars to find it. Any description of where that is located would be helpful. Thanks.
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1980 Porsche 924 N/A USA
1980 Porsche 924 turbo USA
1987 Porsche 944S USA

[Johno]

My son tells me it is (most likely) a single wire off the thermostat housing.
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79 924 NA

[gohim]

I have the Ford Factory 97 Service CD. Ford publishes all of the service manuals for all of the cars for each model year on a single CD (switching to DVDs from what I understand).

If I get a chance I will reinstall it tonight and find out where the thermal switch is located for you.

You can usually buy Genuine Ford Service CDs on eBay for most any model year down to around 1990 for less than $10 each, including the shipping.

[endwrench]

Most late model American cars use the ECM to switch the coolant fan. More than likely you have a stuck relay. Who knows were that is. Probably on the firewall or strut tower. Start unplugging till the fan stops.

Todd

[gohim]

I found my 97 Ford Service Disc, and you are probably not going to like what I found out.

The cooling system control is very similar to my 96 Ford Taurus.

It consists of a temperature sensor (it is the single wire sensor located on the termostat housing, there are two sensors there and the other has more than one wire), the CCRM (multifunction relay, on my 96 Taurus it also controls the fuel pump and the variable rate steering and the ac system, among other devices), and the PCM (main car computer module).

On my 96 Taurus the cooling system relay located in the CCRM died. It was stuck on in High Speed all the time (same problem as a defective relay in a 924 or a watercooled VW). A NEW replacement part would have been over $150 from Ford. I bought a pile of stuff from a 97 Taurus Wagon for $12, including the engine (not running) and the CCRM. I had the guy strip the small parts off the engine (emissions controls, wiring, coil pack, fuel rail with injectors, etc), and let him keep the rest.

On my 96 Taurus the CCRM is located next to the battery, and can be removed by flipping a latch, and unscrewing the screw/bolt that secures the large electrical connector to the CCRM.

If the sensor was bad, the fans would not have been stuck on High Speed, even after the engine cools. On the Taurus, when the ignition is shut off, the cooling fans may run at High Speed, until the coolant temperature drops, then the fans should shut off. On my defective CCRM, the cooling fans would intermittently run at High Speed when the ignition was shut off until the battery discharged.

There is very little chance that a defective PCM would cause this problem, because even if the PCM instructed the CCRM to run at High Speed, if the CCRM is working correctly it should ignore the improper command from the PCM.

Try ordering a NEW Ford CCRM from a place Website named "fordpartsnetwork.com" they sell Genuine Ford Parts at a huge discount. I have gotten parts from them at 30%-40% less than the local Ford and Mercury Dealers sell them for. They are located in FL, have a good sized inventory, and can get whatever they don't have that you want in a few days. Their shipping rates are reasonable as well.

[Benino]

hey. I was away for a couple days. Thanks a lot for your help. I'll check the web site and see what the price is. I might check junk yards also to see what I can find. That was some good info. thanks again.
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1980 Porsche 924 N/A USA
1980 Porsche 924 turbo USA
1987 Porsche 944S USA