the weather is warming up and i'm itching for more work on my truck. The fog light will be happening and i'll take pics along the way and make a DIY replacement thread. But i'm looking to do an e-fan swap to get some throttle response and hopefully a little more power and torque and maybe some MPGs (if i can stay off the throttle that is)

Anyways, Here's what i have planned:

Ford Taurus e-fan, part number F4DZ8C607CA
BWM 2 speed switch, part number 61311378073
Volvo 2 speed relay, part number 9442933

I don't have alot of junkyards up my way, so i'm looking to source using RockAuto or somewhere else (ebay perhaps) for the switch and the relay, the fan i should be able to get through the junkyards up this way easily enough, there should be tons of mid 90's fords with the 3.8 that i can pull from. but BWM and volvo would be hard to come by.

Question is, does anyone know or can help me track down the wiring harness part numbers for the switch and the relay. Or at least the part numbers on the connectors so i can build it properly. I think i have the wiring diagrams that will work and i'm not afraid to splice together wiring. I'll strip, solder and heat shrink all splices.

And, the screw plug on the coolant intake on the top of the engine, does anyone know the thread pattern? I would call it the thermostat housing on a small block chevy, but as ours is on the bottom i don't know what to call the one on top. The BWM switch is M14x1.5 i believe. I'll get another housing and tap it if i have to, or make an adapter if anyone knows the thread pattern of ours.

 

O hai. The auxiliary sensor fitting is a 3/8 NPT, I have a 3/8 npt to M14x1.5 adapter that I made as a proof of concept from when i did mine. I didn't need to use it because my 5.7 doesn't have this fitting, I had to go another route but i wanted to make one for the thread to show it was possible.

Just thought I'd let you know that my Mark8 fan, BMW switch, initial relay, 40 amp fuse, and Volvo relay are still all alive and kicking. I have two spare volvo relays, a spare Mark8 Fan, a spare Taurus fan, and the 91/99 BMW switch with my M14 to NPT adaptor that I made for 4.7 applications. My Mark8 fan cools my 5.7 in the summer while drag racing, so I think the taurus fan, which is much easier to fit in there than the Mark8, will cool the 4.7 easily.

 

Here's the link to my thread from almost 2 years ago. The setup has worked without a single hiccup for this entire time since before my last update.

please let me know if you have any questions.

https://dodgeforum.com/forum/3rd-gen...fan-setup.html

 

Thanks FrenicX, you are the best. This is exactly what i'm planning on doing, other then the fact that i'm on a 3.7.

Is it overkill to have the pre-fan relay relay or would the fan relay not have a switched power go to it also? does it really only have the battery direct power input? i thought i saw somewhere on another forum that it had both going into it. Would a self resetting fuse work for there instead? i wired one into the 7 pin on my old chevy years back.

So, those different butt and ring terminals that you mention, Those function if i can't get some of the wiring harness or did i read that wrong?

I might have to contact a company that is out of town that delivers to my city twice a week to see if they can pull some for me with the wiring harness, if not, i have to try and make it work with butt and ring terminals or find the wiring harness or connector part numbers. I plan on bench testing my setup before it goes in the truck anyways.

 

If you are like me, you will find that the fan is the hard one to find. It is from older Tauruseseses, and yards don't keep cars around as long as they used to. I found the switch and the relay without any trouble at all, but can't find a Taurus old enough - still looking.

New snow on the ground here today!

 

Yeah, i started making a few phone calls to some out of town junk yards that deliver to Timmins, it is the hard one to get but one of them is trying to source one for me.

No new snow for me today, but it was -17 C (-2 F) when i woke up. Ugh. i'm done with winter. At least at this rate i'll have all my parts for when it warms up in May.

 

I run a HHR fan with the SPAL controller, and additional 12" pusher. I couldn't be happier.

 

Here's my thread:

https://dodgeforum.com/forum/3rd-gen...-tutorial.html

 

Sorry for not responding earlier.

As far as the "80amp relay--> 40amp fuse--> volvo relay--> fan speeds" wiring, it was done that way because I wanted a switched source somthat the fan would turn off with the truck instead of running until it cools down.

If I remember right, the volvo relay has 1 positive in and two positive out to the fan or fans, and a signal in for each of the temps. You can wire the high signal to two places, the high temp switch ad the AC compressor clutch wire.

Basically I use the first relay to turn on the volvo relay, otherwise it would be on all the time as long as the temp is high enough to trigger one of the relays. I've been using a regular 40 amp fuse after that and it's been ok. Technically the fuse should be before the first relay, but it's been fine for 2 years this way.

I am also using he 80amp relay to power my sub amplifier, so it gets a decent amount of usage. That one is correctly fused before the relay right after the battery.

I made the mistake of wiring he taurus fan backwards and it would spin just fine, but blew fuses left and right. It's important to bench test the setup before installing it in the truck unless yu can afford the down time.