Savington

iTrader: (31)

I am at Willow Springs and my fans are not working. The car boiled over after my last session. I need to know if there is a way to get the fan to come on in the MS software, or if there is a way to do it in the harness. I believe I have melted the wire going to the thermoswitch on the back of the head, and I cannot reach it because the manifold/turbo/DP/heater lines are in the way.

Atlanta93LE

iTrader: (5)

Run a ground straight to the fan plug.

patsmx5

iTrader: (16)

Take the wire off the thermoswitch and ground it. Fans will run all the time when the key is on.

Joe Perez

iTrader: (8)

You can ground the black / green wire at 1L to turn on the primary fan relay, the the blue / white wire at 2S to turn on the secondary fan relay.

You can pull the relay out of the socket and insert a jumper to bypass it:



(If you can't see that attachment, I'm pretty sure it's the two terminals spaced furthest apart, and which are in a straight line with one another)

Ben

iTrader: (33)

Unplug the fan relay and jumper the terminals with a paper clip or wire with spades.

The thermoswitch doesn't run the cooling fans with the MS unless you've done some modifications for it to do so. I had MS controlling the main fan and the thermoswitch on the a/c fan, but again that was a modification done by me and not stock.

Braineack

iTrader: (62)

Diagnostics box: GND and TFA

Joe Perez

iTrader: (8)

Braineack is the winner.
(I never even noticed that terminal was there.)

hustler

iTrader: (6)

any update? Lots of fan problems recently.

Savington

iTrader: (31)

I couldn't get back to check this thread, but I really appreciate all the replies, guys. I checked my FSM first thing, and jumped GND and TFA, and nothing came on. I then drove down to Autozone (big radiator + extra hole in bumper = 200 degrees with no fans on the highway) and bought some wire and spade connectors. I grabbed 12v from the diagnostic port, grounded to the a bunch of various stuff, and the fan never came on. Looks like the motor itself died.

I'll probably do low-pro fans with a custom shroud or something.

Joe Perez

iTrader: (8)

I just have to ask- is there something wrong with that? Mine typically indicates 196-199 on the freeway (with a 185° rated thermostat) which is just about right. Are you expecting to run significantly colder than that?

Savington

iTrader: (31)

Joe, I was expecting to run hotter. I always thought the fans were necessary to keep the temps where they were.

patsmx5

iTrader: (16)

If you do, be clever how you build the shroud. Many here have "upgraded" to slim fans and no shroud/custom shroud and immediately had overheating problems. Seeing how you track the car a lot, I would definitely do my research on the matter.

Personally, I bought a set of 12" slim fans to put on mine. After all my research on fans, shroud, and whatnot, I found the best solution for me: stock fans w/built in shroud.

Savington

iTrader: (31)

I will probably mimick the shroud setup that FCM sold for a little while. Just a sheet of ABS sealed to the radiator with two holes cut JUST big enough for the fans themselves.