Fan Controller

[SVOBoyd]

Hey all the other day my fan controller went bad. It looked good and wasn't burnt up looking it just went bad. I ordered a new one from NAPA but the one they listed for an 86 was for non ac so we looked up the controller for an 87 and it was the correct part. The part number is AR140 and it cost $40.

[Patrick]

If you can, please post a few side-by-side pics. I believe that Neil and Nelson tried that and came across a problem where the connector plugs in (different number of wires and contacts at the terminsla). Check back with us and keep us up on your progress.

NAPA says it fits 1984 thru 1992. The one Neil tried had 10 terminals. I believe we need one with 8 terminals.

[Jay4hand]

http://i1176.photobucket.com/albums/x333/jay4hand/100_3385.jpg

I got a replacement from the junkyard for $4.00 out of a 1989 4cly

[Patrick]

Here's the pic that NAPA has of the AR140. It appears to be correct.


825

[Meotchh]

Post picks of the failed controller. If there a no burns I'll take it. Repairs are usually pretty simple & cheap.

[SVOBoyd]

827828

Pat

Attached are a couple of pics. I installed it yesterday and everything is working fine.

[SVOBoyd]

Post picks of the failed controller. If there a no burns I'll take it. Repairs are usually pretty simple & cheap.

Send me your address and I'll ship it out.

[Meotchh]

Kevin, check yoour PM.

[65ShelbyClone]

It just occurred to me that the fan controller in my car only has one relay on the board and only has six contacts(of eight available spaces) on the edge connector. I take it it's not the right one? The fan has never worked in my ownership.

[DaveS]

IIRC, there is a different part number shown for a non-A/C car....do you have a A/C delete or CP?
I can check my CP this evening as I've only changed the controller in A/C cars.

[65ShelbyClone]

It's just a "regular" early '84 car with A/C. I had the controller out a long time ago to see if burned wires were the reason for the fan not working, but neither wires nor plug nor the controller appeared damaged.

http://img.photobucket.com/albums/v521/65ShelbyClone/Public/Car%20Stuff/09a7cd3c.jpg

http://img.photobucket.com/albums/v521/65ShelbyClone/Public/Car%20Stuff/171e3511.jpg

The traces and phenolic board look '80s vintage to me.

[Patrick]

^^^ That one is for a non-A/C car. Non-A/C cars had a different (lighter duty) fan speed control switch on the dash as well, that was wired differently at the harness connector and had one fewer speed selection.

[indysvodave]

Slightly off topic... Has anyone used the 3651 Fan controller from Rockauto? Got a couple questions about the install.
I'm completely bypassing the original wiring and controller, and putting a whole new circuit in.

[trmexrunner]

ok i believe mine just whent out aswell and was wondering if someone can supply me with the wiring diagram from a service manual. so i can check the wiring before and after, and if needed figure out how to wire 2 normal bosch relays inplace of this controller

[Larry_S]

ok i believe mine just whent out aswell and was wondering if someone can supply me with the wiring diagram from a service manual. so i can check the wiring before and after, and if needed figure out how to wire 2 normal bosch relays inplace of this controller
For requests such as this can we provide service manual image or are they still copy write protected. Is this a concern of the admins or can we supply this information publicly here?

[Larry_S]

It's just a "regular" early '84 car with A/C. I had the controller out a long time ago to see if burned wires were the reason for the fan not working, but neither wires nor plug nor the controller appeared damaged.

http://img.photobucket.com/albums/v521/65ShelbyClone/Public/Car%20Stuff/09a7cd3c.jpg



The traces and phenolic board look '80s vintage to me. Is the board with the extra components the AC version and the board with relay only the non-AC board?

[Patrick]

The A/C version has double everything on it. You'd be hard pressed to not tell the difference.

[Larry_S]

The A/C version has double everything on it. You'd be hard pressed to not tell the difference. interesting. I'll have to post pics of the two boards I have. One has one coil, transistor, resistor, diodes like the one pictured in post 16 and the other board has one coil and no other components at all.

[Patrick]

Larry, see post #6 in this thread for A/C fan controller pics.

[Svofrk]

I think my fan motor may be bad also. Anyone know where the best place to get a replacement fan motor.

[Larry_S]

Probably someone here has one. Post a wanted add someone may have one.

[Patrick]

Radiator cooling fan motor.

Rock Auto, AutoZone, O'Reilly's, name a parts store. They're available.


1801

[k98dave]

I just ordered a new control module but the harness connector was overheated and melted a little. (Bad fan motor causes this) Is this connector available or will I have to cut one out of a salvage yard car.

[Meotchh]

I think my fan motor may be bad also. Anyone know where the best place to get a replacement fan motor.

Why do you think it may be bad? Have you tested it with a multi meter followed by connecting it directly to the car battery with an inline fuse on the positive lead?

[MikeFleming]

I just ordered a new control module but the harness connector was overheated and melted a little. (Bad fan motor causes this) Is this connector available or will I have to cut one out of a salvage yard car. The pigtail connector repair kits are readily available. They come with wider, higher-current rated contacts.

[k98dave]

The pigtail connector repair kits are readily available. They come with wider, higher-current rated contacts.


Really,

Where can I get one? I have looks at both NPD and LMR and neither of them show this connector.

Thanks

[MikeFleming]

Just about everywhere. For example: Dorman 85153 (pictured below) and your local Ford dealer will also have a pigtail and connector available.

About $10/US (plus shipping)
http://www.amazon.com/Dorman-85153-Wire-Controller-Socket/dp/B000C5G8QI

And Rockauto has some closeouts for $5.48:
http://www.rockauto.com/dbphp/x,carcode,1140073,parttype,10623,d,1982_FORD_THUNDERBIRD_4.2 L_255_cubic_inch_V8_2BBL_D_OHV_Ignition_Control_Module_Conne ctor.html

1810
1811
1809

[Ford Builder]

Is the fan controller mounted just under the dash on the left side, how about the location to the relay for the fan ? Just for future if the need comes that they need to be replaced ?

[Patrick]

The fan controller is the relay.
Yes, that's where it is located.

[fslec]

After replacing the fan controller in my 84 twice I added a relay (fog light type) in the hot wire going to the fan eliminating the high current going through the controller. Have not had a issue since.

[Ford Builder]

Speaking the fan , my fan is not firing up, wondering if the temp switch in the block is defective it used to work before the tear down , is there some way to test the system to see where the problem is ?? I had motor running for a time and keeping eye on temp guage and I shut it down before the temp got to high . I may be jumping the gun I just don't want to hurt my new motor .

[MikeFleming]

If you have a one-wire temp switch, ground the wire to activate the Fan ON circuit. If a two-wire switch, short the two wires together.

Alternately, if so equipped, turn on the AC to test the other relay (and same wiring).

[Ford Builder]

I tryed grounding single wire to ground and there is nothing?? is there wiring diagram ?

[Desert Patina]

I found some useful ones here ... http://www.rothfam.com/svo/fanswitch.htm

[Ford Builder]

Ah Thats why my controller does not work we switched the computer to LA because it did work before I changed it out. THANKS VERY MUCH

[MikeFleming]

In all SVO models, the cooling fan has nothing to do with the EEC computer. So unless you did some major wiring changes when you installed the LA*, it's still the same and changing EECs would have no effect whatsoever.

[Ford Builder]

Ok I Have question I have consistent feed to the controller, but no key feed where does it get its source from I need a diagram to its location Thanks

[MikeFleming]

Some pages from the 1984 EVTM. Pardon my forgetting, what year is your car??

3487
3488
3489

[Ford Builder]

Its 85 The feed does go directly to ignition or is a fuse link between the ignition to the controller

[MikeFleming]

Remind me tomorrow and I'll post pics from the 85 EVTM.

[Ford Builder]

OK

[Ford Builder]

Remind me tomorrow and I'll post pics from the 85 EVTM. Here is your reminder?

[MikeFleming]

1985 evtm.

3497
3496
3498
3499

[MikeFleming]

While I'm in here, here's same from the 1986 EVTM.

3500
3501
3502
3503

[Ford Builder]

Mike I need to know the key feed goes to key feed thats clear, but is the fuse link to kill the circuit if it gets overloaded. Thanks Sorry Mike I read the data sheet and it filled in the blanks

[MikeFleming]

So you're good?

[Ford Builder]

Well my buddy at work checked the controller and its fine ,is no key feed when I checked last night, the hot wire terniminal that goes to the fan that plugs into the controller is burnt just needs to cleaned up and will be fine , now just have check the key feed, the one wire that runs hot all the time has power, I will let you know what the findings.