miataz

iTrader: (1)

Finally made my fan shroud yesterday 40$ for a piece of lexan 1/4" thick and 16/26". Got it all in wired up the fans to stock fan harness took it for a boot fans go on at 180. I then noticed they never shut off. I look under the hood the wire for the thermo-switch for the fans got blown off or something. I thought that switch was to make the fans come on? Does it make them go off to? My temp guage was staying at 190 even though the fans were on for about 10min while i was driving. So im asking is it that since its broken my car wont cool down and the fans wont go off? And if i get a 160deg thermostat will my temps be cooler? Thanks Mike

Here are some pics

switch isnt actually like that i rigged it so i could connect it but no luck.




and style bar and chrome gas cap install lol i know i know

04 Miata

Does the MS run the fans off the switch like the stock ECU?

On the stock ECU the fans get turned on by the switch and if the wire is off the switch they don't turn on. Did you have your AC on?? That turns on the fans and keeps them on.

Going to a lower temp thermostat will only circulate the water sooner. You will still get as hot it will just take longer to get there and if you need heat in the winter it will affect the heater.

miataz

iTrader: (1)

Umm i have no clue about that for the MS running the fans, anyone know can they chime in. I dont have A/C. I dont drive in the winter so i dont need heat. And is 190deg a normal temp or is it to high cause my switch is fucked cause usually it cools down then goes back up and the fans go off. How do i fix it do i have to set something on the MS?

miataz

iTrader: (1)

Does anyone know what to do? Do i have to wire my fans into the output on the MS my cars not cooling down and the fans are not shutting off...

jasonrobo02

iTrader: (13)

What type of MS are you running? If it's a standalone configuration, you need to mod the MS to control fans. If it's parallel, then the stock ecu should still be controlling the fans. If it's a MSPNP from DIYAT, it should control the fans no problem.

miataz

iTrader: (1)

Its a MS PNP from DIYAT, but it does control them but they never turn off...it reaches 180 turns on, they stay on and my coolant temp still stays the same. And my thermo switch isnt even hooked up and they still turn on but never turn off.

spike

You need to seal the sides of the fan shroud.get some weather stripping and seal the gaps around the entire shroud.

miataz

iTrader: (1)

Alright thanks. But why do the fans still come on if the thermo-switch isnt connected?

patsmx5

iTrader: (16)

Because you probably don't have them hooked up correctly with MS. Post a screen shot of the settings your running for fan control, and explain how you wired them up in DETAIL. Nobody here knows how you set this up but YOU.

miataz

iTrader: (1)

I cut the harness from the stock fan and connected the 2 10 inch fans to it. Heres a pic i made on paint not that great

but you get the idea, for the MS part i haven't touched any settings for fan control what ever came with the MS i left the only things i touched on MS were timing and req fuel and some tuning thats it.

04 Miata

You say you don't have A/C but did you?? Why I'm asking is did you hook both fans up to the main fan harness. You diagram shows them hooked up to one lug, fine, but was it the main fan plug?

miataz

iTrader: (1)

No i did not have A/C before i just wanted to rad fans so it could cool off faster. And yes i do have both hooked up to the main harness and yes it is the main fan plug.

miataz

iTrader: (1)

hopefully these pics help you out

patsmx5

iTrader: (16)

You still didn't post your MS settings.

So the fans come on at 180* per megatune guage but they never go off? Try puting it to 200*F or so. You need to see what the settings are.

miataz

iTrader: (1)

What settings? Where do i go to get them? The shift light-fan-output thing? Im nood at MS help me out here where i find these settings.

patsmx5

iTrader: (16)

Sorry, I don't know MSI, I use MS II. I go to MT, then Exteded, then Output Port. Their, I can select different outputs to be controlled by various inputs, such as fans controlled by coolant temp.

miataz

iTrader: (1)

Alright i think i know what your talking about...if this is it here it is:



one of those i think it is? And do you think its not cooling down cause its not sealed?

patsmx5

iTrader: (16)

Damnit, answer my questions. Do the fans come on at 180 or do they come on all the time? I already asked you this. Right now, your screen shot shows they come on at 215 and have to go down to 210 (hence the 5*F hysteria) to shut off. That means they 'should' come on at 215, off at 210, and repeat. Do they run all the time as in key on the fans are on? Jeezus, answer the questions. Do they run all the time? Ok, I asked the same thing 3 times, maybe you'll get it this time.

miataz

iTrader: (1)

Lmao alright they come on at 180. And the thermo switch isnt hooked up and my temps dont even go down when there on.

patsmx5

iTrader: (16)

Well, you have them set to come on at 215 by the pic, so somethings wrong. If MS is running fan control then that thermo switch has no effect. Why don't you try turning the car on when it's cold and varying the setting on fan control and verify you can make them come on and off by changing the on/off temp. For example, put it to 0*F and 1000*F, they should go on and off. Turn your brain on and think, troubleshoot, and eliminate possible problems until you discover the error.