flatblacksleeper

ok, i have an 88 gxl 5spd.......i just parted out a 88 t2 that had an aux fan on condenser that i removed. i see my car has the mount points for the aux fan, do i have the connector and the wiring in my car? my car would creep warm when it was hot as hell with ac on. i know its winter now, but can i put it my car easily?
thanks

Aaron Cake

iTrader: (1)

Only cars with A/C had the aux fans as I recall.

The wiring will be in place for the fan but you will need to add the thermoswitch to the top of the thermostat housing.

Regardless, the temperature of the car should not increase if the A/C is on. Check the operation of your clutch fan as per the FSM/Haynes manual, and make sure the rad is not clogged.

InGroundEffect

The only cars I have ever seen with an Aux fan are Turbo's. I have never seen a Non Turbo car with a Factory Aux Fan.

RotaryResurrection

iTrader: (8)

only NA AT and turbo models got the aux e-fan. No NA manual car got it for some reason.

flatblacksleeper

is the wiring in place for the fan and thermo switch? id assume it would be. the thermo switch would be on the stat housing? does anyone have the part number or one available? i sold the engine allready, so its gone.
thanks

RotaryResurrection

iTrader: (8)

wiring is present on the engine/emissions harness, but I dont think it is present on the body harness up by the headlights. Check there for the aux fan wire plug first.

A while back I added one to my FC to help with the a/c. I just wired it to come on when the a/c relay energized, which happens to be about 10 inches away from the fan's location.

IF you want it to come on with the temp thermoswitch, then you'll need a thermo neck with the switch (s4) and to run a wire from it to the fan, and have the other fan wire be switched +, such as from the fusebox. The fan is so small and low amperage that I wouldn't worry about putting it on a dedicated relay, but you could if you wanted to be extra safe I guess.

flatblacksleeper

i just want it 2 always come on with air on, thats the only time...... sooo what you reccomend?

scrip7

iTrader: (6)

I also did what RR did when I converted my AC to r134a. My '90 GXL had the mounting points for the e-fan but no wiring up front. I wasn't having coolant temp issues, but adding the TII fan made a noticeable difference in a/c temps. Make sure your underpan is installed as well as your upper covers. If your radiator is original, it is probably 1/3 plugged or more. This would show up more at higher speeds or hard accel. Definitely check the fan clutch as Aaron Cake mentioned.

flatblacksleeper

how did u wire it up? can i take the harness from the t2?

any help?

scrip7

iTrader: (6)

I used a TII fan and relay from a salvage yard and I don't remember the exact way I did it, but here's one way you can do it:
Get a used TII fan from salvage, ebay or a forum member.
Go to Autozone and buy a standard Bosch-type relay (the ones used for fog lights works fine). On the bottom of the relay there should be numbers next to each terminal. There are 2 existing studs on your car that are used to mount the fan. Attach 2 ground wires to one of the studs. One of these wires will go to pin 30 of the relay, the other will go to pin 85. Connect the yellow/ black striped wire from the fan to pin 87. Connect the yellow wire to a fused 12v source (there is probably an extra cavity in the underhood fuse box to add a 20 amp fuse). Connect a wire from pin 86 to the black/ white wire that goes to the a/c compressor clutch.

That is one way to do it. There may be a switched ground output from the ECU that will trigger a relay with the a/c on, you may want to send a pm to Hailers for that info. He's da man when it comes to wiring circuits on your FC. If this is the case, you can wire it this way:
Ground wire to pin 30
Fused 12v wire to pin 86 and to yellow fan wire
Yellow/ black wire from fan to pin 87
Signal wire from ECU to pin 85.

RotaryResurrection

iTrader: (8)

You dont need any harnesses, relays, etc. Just get the fan, and if possible cut the plug off that goes to the fan. Your car already has a relay up front that energizes when the a/c is turned on. Ground the fan wire, and then run the other one to the a/c relay, to the wire that energizes 12v+ when the a/c is activated. Simple as that.

Be sure you have the fan blowing in the right direction, not pulling air backwards.

scrip7

iTrader: (6)

I had considered doing just that when I installed mine, sharing the oem relay with fan and compressor, but thought the relay contacts were probably too light duty to handle both devices over a long period of time.

RotaryResurrection

iTrader: (8)

This little fan is so light that it probably doesnt even draw 10 amps. The stock relays are usually rated 30-40 amps...even the cheap autozone fog light relays are rated 30 amps. The a/c compressor doesnt draw a whole lot of amperage either...it's just a magnetic clutch.

I am running my car this way, btw.

Acesanugal

iTrader: (5)

Ah, so S4 NA manual cars with A/C don't have electric aux fans for the A/C then?

I notice when I run my A/C that my clutch fan is always engaged. Because the motor runs a tad bit warmer, which is normal.

NZConvertible

If the ambient temp is high (and he said it was) then A/C will definitely cause a small engine temp increase. It's pretty much impossible for it not to. Nothing wrong with that though, as long as the temp is stable.

An auxiliary fan that runs when the A/C is engaged is very beneficial to the A/C's operation and is worth fitting if you don't have one. I wouldn't even bother with the factory wiring or relay, just use a cheap generic relay powered from the battery (via a 10A fuse) and switched by the compressor. Easy.

Furb

iTrader: (2)

i have a Turbo with AC (is now removed btw) but there is no aux fan on the car...
maybe because its a eurospec?