Windstar fans and wiring - Page 2 - Chevelle Tech
Electrical & Wiring Troubleshooting electrical problems.

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post #16 of 27 (permalink) Old Mar 28th, 19, 7:33 PM
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Re: Windstar fans and wiring

"Good" (meaning they move a lot of CFM) electric fans draw a lot of power, like 20 amps running each. Direct drive DC fans will often draw 50% more at start up so that's 30 amps each for about a half a second.

For a stout big block, you should have a total of at least 4,500 CFM.

To do this reliably at that power level, each fan should have a relay fed from a 25 amp fused feed from the battery. That's two feeds, two fuses, two relays. As said, negative wiring needs to match.

So, Rich, two Windstar fans didn't do the job? I would guess something was the cause.

I'm running two Toyota Camry V6 station wagon fans (the best fans I could find back in the 80's) and I have no clue what they're CFM is but they draw just over 20 amps each. I have a low speed/high speed relay setup and the fans rarely need to go to high speed. Keeps a 600HP 496 inch motor cool.
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post #17 of 27 (permalink) Old Mar 28th, 19, 7:56 PM
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Re: Windstar fans and wiring

My shop always has a few of these relay bases ready for use. They get screwed/bolted to something and the relay sits in it, the relay doesn't support the wires.

It's far cheaper to make up your own relays as needed rather than buying a pre-wired kit. Always use a Hella or Bosch 30 amp relay.

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post #18 of 27 (permalink) Old Mar 29th, 19, 5:57 AM
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Re: Windstar fans and wiring

Sorry folks, I didn't realize I forgot to add the link. I'm tired....

https://www.summitracing.com/parts/hla-h84989011

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post #19 of 27 (permalink) Old Mar 29th, 19, 7:46 AM
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Re: Windstar fans and wiring

hey guys, I made a video last year on Windstar fan wiring..

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post #20 of 27 (permalink) Old Mar 29th, 19, 10:33 AM
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I drive the heck out of mine with the fans and they work like clockwork... On at 195, off again (about 3 mins if sitting in traffic w/o airflow) at 175.

That said, I have a big 4 row radiator and new water pump. When I drive in the morning or evening, often the fans won't even kick on at all... That means that my heating issues are strictly due to lack of airflow when stopped. The Windstar fans put out an incredible amount of air, and I wanted them both to come on instead of one at a time.

Since I got my car w/o a motor I was missing all the fan parts/shroud,and the cost was about the same to buy the electric but I agonized over the decision as well.

If you already have a factory shroud and hd clutch fan and it won't cool, your money might better be spent on a better radiator first vs electric fans.
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post #21 of 27 (permalink) Old Mar 29th, 19, 11:36 PM Thread Starter
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Re: Windstar fans and wiring

Quote:
Originally Posted by paul bell View Post
So, Rich, two Windstar fans didn't do the job? I would guess something was the cause.
i havenít put them in yet. I have a ~3yr old row copper/brass radiator, clutch fan, shroud setup and thatís where Iím seeing the heat.. hence the windstar fan route. I have the fan assembly and a pair of relays and wiring.. just have to figure out how it all goes together without burning down the house.

454 has a solid alternator that can put out the power, thankfully!

So much great information from everyone! I now have alot more to read!
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post #22 of 27 (permalink) Old Apr 1st, 19, 10:36 AM
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Re: Windstar fans and wiring

I could wire up the relays for you if you want or if you took pics of the relays I could tell you how to connect things together via wire colors.

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post #23 of 27 (permalink) Old Apr 13th, 19, 8:31 PM Thread Starter
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Windstar fans and wiring

PM sent, thanks! I actually might be good. This Hayden pre-wired kit looks like it will do the trick. I just have to pick up more of the right gauge wire.

However, I hit a problem. I went to pull the ancient not-in-use in-passenger-head sensor and I couldnít get it to move. While trying, the remnants of the probe sticking out past the nut crumbled and fell to the floor. I soaked it in Pb blaster before trying and it just stayed put. Of course I donít want to snap it off, either, as that would be bad.

Iím thinking the in-head option is, well, no longer an option.

I need to put this sensor somewhere, and of course I already have a sensor in the intake for the gauge. Anyone know of any other options?

1968 Chevelle Malibu 454, mild cam, 30 over, 12-bolt 3.73 rear
1972 Chevelle Malibu 350, radical cam, 30 over, 10-bolt 3.55 rear
2007 Mustang GT, 4.6L (281), Stock
There are no Ford vs. Chevy wars in my garage. It's all U.S. muscle.
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post #24 of 27 (permalink) Old Apr 13th, 19, 9:46 PM Thread Starter
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Re: Windstar fans and wiring

I just checked the driverís side and there is a threaded plug (square center) in the same spot. Is it worth trying to get that side out to use it or should I just get a new thermostat housing which has a port for the temperature sensor?

1968 Chevelle Malibu 454, mild cam, 30 over, 12-bolt 3.73 rear
1972 Chevelle Malibu 350, radical cam, 30 over, 10-bolt 3.55 rear
2007 Mustang GT, 4.6L (281), Stock
There are no Ford vs. Chevy wars in my garage. It's all U.S. muscle.
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post #25 of 27 (permalink) Old Apr 21st, 19, 9:27 AM Thread Starter
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Re: Windstar fans and wiring

For the life of me, I cannot get the probe out of the passenger head. I half want to put a pry bar on it, but I fear Iíll screw up the head.

The driverís side has a plug in it but that isnít moving either. The recessed square fits a ratchet / extension but the hole is a little screwed up (someone previous to me looks to have tried to remove it).

Why is it that something which should be so simple is such a pain in the a**?

1968 Chevelle Malibu 454, mild cam, 30 over, 12-bolt 3.73 rear
1972 Chevelle Malibu 350, radical cam, 30 over, 10-bolt 3.55 rear
2007 Mustang GT, 4.6L (281), Stock
There are no Ford vs. Chevy wars in my garage. It's all U.S. muscle.
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post #26 of 27 (permalink) Old Apr 21st, 19, 9:34 AM
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Re: Windstar fans and wiring

I think I would put the temp sensor in the intake or under the water neck. Temps in the head tend to read higher due to heat from the cylinders. And yeah, you probably won't get those plugs out of the heads.

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post #27 of 27 (permalink) Old Apr 22nd, 19, 8:27 AM Thread Starter
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Re: Windstar fans and wiring

Quote:
Originally Posted by red68chevL View Post
I think I would put the temp sensor in the intake or under the water neck. Temps in the head tend to read higher due to heat from the cylinders.
Iíve got a probe already in the intake for the gauge. Since this is another screw-in probe, i guess Iím looking at replacing the thermostat housing for one that has a bung for a probe.
Quote:
Originally Posted by red68chevL View Post
I think I would put the temp sensor in the intake or under the water nec And yeah, you probably won't get those plugs out of the heads.
Dang. With the way they are fried in place, unless I hit it with a torch and cause more damage, I bet you are right.

1968 Chevelle Malibu 454, mild cam, 30 over, 12-bolt 3.73 rear
1972 Chevelle Malibu 350, radical cam, 30 over, 10-bolt 3.55 rear
2007 Mustang GT, 4.6L (281), Stock
There are no Ford vs. Chevy wars in my garage. It's all U.S. muscle.
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