Is it possible for the AC fan to run with the Radiator fan? - Page 2

**ugly mx6 guy** · 1-8-08, 14:06

Keep in mind that the a/c fan seldom comes on even when the a/c is running. Now if they are wired to the same spot it would be different. The worthless rad fan does most of the work.

**TurboTweak** · 1-8-08, 15:07

Quote:

Originally Posted by SixSick6

You're forgetting that one fan pushes and the other pulls.

Yea but they are on opposite sides so the flow direction is the same if wired corrrect.

Quote:

Originally Posted by SixSick6

Also, the AC compressor fan (the metal one) wired into the same circuit as the radiator fan will cause both fans to slow down. This is fact.

Image:Series and parallel circuits.svg - Wikipedia, the free encyclopedia
Only if they are wired in series. If they are wired in parallel they will spin the same speed as they would on different circuits but the thing to be aware of is the increased current draw. Make sure fusing and relay contacts are sized for it. IIRC the radiator fan circuit goes thru 2 relays so both would need to be looked at.

**magik8** · 1-9-08, 21:24

Quote:

Originally Posted by ugly mx6 guy

Keep in mind that the a/c fan seldom comes on even when the a/c is running. Now if they are wired to the same spot it would be different. The worthless rad fan does most of the work.

How is the stock radiator fan "worthless" ? It works just fine and keeps these cars plenty cool. It really annoys me when people assume that everything that came on the car from the factory is inadequate and "sucks" just because it doesn't have a shiny Summit (or whatever) sticker on it.

**allmazda** · 1-9-08, 23:34

I agree. But I will add this fact. There are 4 different fans Mazda used for the MX6.

1. NA 5sp is the smallest.

2. Turbo 5sp is next

3. NA Auto

4. Turbo auto is the largest.

So if you feel you need to upgrade and do not have a Turbo auto there you go.

Smallest - largest means the current draw for the fan motor. When my fan died I got one from a NA Auto at a junk yard.

**ugly mx6 guy** · 1-10-08, 11:10

If your car is all but stock then the factory rad fan is fine, but if you have had alot of head and block machine work done then it's not enough. The factory rad fan does not click on until the car reaches 220 degrees and that is too late in my case.

**magik8** · 1-10-08, 16:57

Quote:

Originally Posted by ugly mx6 guy

If your car is all but stock then the factory rad fan is fine, but if you have had alot of head and block machine work done then it's not enough. The factory rad fan does not click on until the car reaches 220 degrees and that is too late in my case.

Why don't you just modify the thermoswitch circuit so it comes on earlier then? Changing the fan isn't going to help your situation.

**SXE MX6** · 1-10-08, 17:00

here's one, why not wire both to your ignition?

or run toggle switch's?

**magik8** · 1-11-08, 9:56

You don't want the cooling fans on 100% of the time. The engine has an optimal temperature range it should be at; too cool or too hot are both bad situations. While your intuition may think "cooler is better" this is definitely not the case - optimum power/efficency is in a certain temp range (approx 200 F)

**mrmoose** · 5-6-08, 23:50

My car is an 88 turbo gt w/manual and I removed all my ac except the fan. When I push the ac button on the dash, the fan comes on and stays on until I press the "ac" button off again. I don't know if the car still thinks the ac system is still intact, but it works great when the temp starts climbing!

Good ol' "3 window ac" works for me!! I still have the factory one too, so it's like having dual fans anyway.

1-10-08, 17:00	#22 (permalink)
SXE MX6 Join Date: May 2004 Location: , Close to Niagara Falls CA Age: 30 iTrader: (2)	here's one, why not wire both to your ignition? or run toggle switch's?
	*Gettin blown by one 19yr old...NICE!! Gettin blown by two...PRICELESS!!* 89 MX6 Turbo......waiting for the road again....someday....maybe!!! 89 626 Turbo Hatch....everyday driver! 89 ZX7 wishing it was turbo...... *Wife's cars-* 2001 Echo(driver) / 1991 GT Mustang(summer)

1-8-08, 14:06	#16 (permalink)
ugly mx6 guy Join Date: Jan 2007 Location: Knoxville, TN, USA Age: 44 iTrader: (3)	Keep in mind that the a/c fan seldom comes on even when the a/c is running. Now if they are wired to the same spot it would be different. The worthless rad fan does most of the work.

1-9-08, 23:34	#19 (permalink)
allmazda Join Date: Mar 2002 Location: , NC iTrader: (2)	I agree. But I will add this fact. There are 4 different fans Mazda used for the MX6. 1. NA 5sp is the smallest. 2. Turbo 5sp is next 3. NA Auto 4. Turbo auto is the largest. So if you feel you need to upgrade and do not have a Turbo auto there you go. Smallest - largest means the current draw for the fan motor. When my fan died I got one from a NA Auto at a junk yard.

1-10-08, 11:10	#20 (permalink)
ugly mx6 guy Join Date: Jan 2007 Location: Knoxville, TN, USA Age: 44 iTrader: (3)	If your car is all but stock then the factory rad fan is fine, but if you have had alot of head and block machine work done then it's not enough. The factory rad fan does not click on until the car reaches 220 degrees and that is too late in my case.

1-11-08, 9:56	#23 (permalink)
magik8 Join Date: Jan 2001 Location: Wisconsin, USA Age: 26 iTrader: (0)	You don't want the cooling fans on 100% of the time. The engine has an optimal temperature range it should be at; too cool or too hot are both bad situations. While your intuition may think "cooler is better" this is definitely not the case - optimum power/efficency is in a certain temp range (approx 200 F)

5-6-08, 23:50	#24 (permalink)
mrmoose Join Date: Nov 2006 Location: Covington, WA, USA Age: 43 iTrader: (0)	My car is an 88 turbo gt w/manual and I removed all my ac except the fan. When I push the ac button on the dash, the fan comes on and stays on until I press the "ac" button off again. I don't know if the car still thinks the ac system is still intact, but it works great when the temp starts climbing! Good ol' "3 window ac" works for me!! I still have the factory one too, so it's like having dual fans anyway.