Electric fan conversion

[Caman96]

It gets hot here too. We have all the same conditions, not for weeks at a time. In one given day, if it’s 100° here, I’m sure I’d get that same reading pointing that on asphalt.

 

[DawgNutts]

I just installed an AlloyWorks 4 core w/fans on my 1997 Tahoe about a month ago. Works great so far. Right now I'm running a 195 degree thermostat with a 200/185 temp switch for the fans. Still haven't figured out how I'm going to wire it up so it also cuts the fan on with the AC. Once the truck warms up and the fans kick on the AC blows cold but from a cold start on a hot day the AC wont blow cold until the fans cut on. Also going to install a high output alternator this holiday weekend.

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[95 Tahoe]

I just installed an AlloyWorks 4 core w/fans on my 1997 Tahoe about a month ago. Works great so far. Right now I'm running a 195 degree thermostat with a 200/185 temp switch for the fans. Still haven't figured out how I'm going to wire it up so it also cuts the fan on with the AC. Once the truck warms up and the fans kick on the AC blows cold but from a cold start on a hot day the AC wont blow cold until the fans cut on. Also going to install a high output alternator this holiday weekend.

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Keep us posted. I'm thinking about doing the same to my 95 2 door tahoe. Mostly to help with at idle ac performance.

 

[Spareparts]

Finally got some hot weather here.
It was 95 degrees out yesterday according to the mirror temp gauge. It's within a few degrees of the reported temp at the airport.
Went to the woods and one of the places i go is uphill all the way for about 5 miles some steeper grade and a few almost level spots but you are always on the gas doing about 10 to 15MPH and watching the gas needle fall.
Truck got up to 210 degrees on the steeper spots. On the not so steep parts it would drop to 197 degrees. Stop and just idling for a few minutes it would drop to 194. I do run a 195 degree thermostat. Oh, and the AC was on also.
So, Im really pretty happy with the fans i installed and for what i do and how i drive they work great.
Sure beats the original stock fan and HD clutch. When the original clutch went into lock mode it was almost like you hit the brakes a little bit. No more of that nonsense!
With the wiring upgrade under the hood and a new battery with a 140A alternator. The Volts never dropped below 13.6 running both front and rear ac were on 3/4 of the way as well as both radiator fans running full speed.
Electric fans are a win for me and second best after

 

[mwilliams55555]

Let me just put this out there, for anyone wanting to do the swap. I have seen this done a lot. IMO, the OE electric fans, are better than the aftermarket electric fans. The OE fans of off, whatever you pull them from, do need to be off of a vehicle that is big enough to have sufficient cooling power. EG, You wouldn't want to put fans from a 4 cylinder vehicle, and expected them to keep your 5.7L 350 cool. The aftermarket fans do work well, but are noisy. Again, you need the correct set up for your truck. I have heard that the fans from a Ford Windstar work well, but they are getting hard to find in the junk yard. Measure your radiator, and find a set that covers as much of the cooling fin's as possible. You definitely want the shroud with the fans. This will pull the air through the fins as needed to work correctly.

Pulling a duel fan set-up of a 06-07, could possibly get as much of the wiring, relays and ECT, seen fan controllers but what is a descent one, also doing the big 3, but going to do more grounds, batt ground to body, to frame and engine, maybe look at fuse box for additional ground spot too. 99 OBS 5.7 inherited from my Dad, he really only drove it to Wisconsin and back to Indiana, always maintained, 275 thousand on the ticker

 

[kennythewelder]

Pulling a duel fan set-up of a 06-07, could possibly get as much of the wiring, relays and ECT, seen fan controllers but what is a descent one, also doing the big 3, but going to do more grounds, batt ground to body, to frame and engine, maybe look at fuse box for additional ground spot too. 99 OBS 5.7 inherited from my Dad, he really only drove it to Wisconsin and back to Indiana, always maintained, 275 thousand on the ticker

I didn't use a fan controller. Each relay, is switched on by the temp switch on the intake, and then, the AC, clutch, and that is on a separate relay, so that the temp switch, can not turn on the AC clutch. It's all in my write up.

 

[mwilliams55555]

I didn't use a fan controller. Each relay, is switched on by the temp switch on the intake, and then, the AC, clutch, and that is on a separate relay, so that the temp switch, can not turn on the AC clutch. It's all in my write up.

I'll have to read it on the laptop, hard to see on phone lol, thanks

 

[kennythewelder]

I'll have to read it on the laptop, hard to see on phone lol, thanks

Yeah, and it's a lot of pages to read, too. If you have questions, just ask.

 

[mwilliams55555]

Yeah, and it's a lot of pages to read, too. If you have questions, just ask.

Thank you, Kenny

 

[phantom 309]

The top fan is the Duramax, I had to trim a small amount off the blades to fit my stock shroud. The fan is massive. The clutch I used is for a 6.0L Trailblazer SS. Running the P59, I have upgraded to the electric clutch now.

wait,.. what??? electric? you??