Radiator fan wiring
12 posts
• Page 1 of 1
Radiator fan wiring
Hey, I did some searching on this, but didn't find much. I know the best way is to get an aftermarket fan, but at this point funds don't allow. Anyway, I put my stock fan in front of my new mishimoto radiator: aka flipped it and reversed the pins on the plug so it rotates in the opposite direction of stock. It is working as it should, pushing air across the radiator. Problem I have is that it is always on. Does anyone know how the fan is controlled? If you could give me some insight as to how to get it to just be on when it is supposed to be that would be awesome. Thanks!
Members don't see the above ad. Register now - it's free! | |
White 1995 BMW M3
Black '90 st185 Sold :(
Black '90 st185 Sold :(
-
Landon - Established Member
- Posts: 1092
- Joined: Tue Nov 11, 2008 12:05 am
- Location: Joseph, Oregon
Re: Radiator fan wiring
Is your AC removed? If so, you need to put a jumper in the AC high pressure switch connector to turn off the fans.
And by always on, I assume you mean that it is on any time the key is in the ON position, right?
-Charlie
And by always on, I assume you mean that it is on any time the key is in the ON position, right?
-Charlie
'89 Camry LE Alltrac 3S-GTE - SV25/ST205 hybrid
'99 4Runner SR5 4WD 5VZ-FE
Previous: '88 Camry LE Alltrac 3S-GE BEAMS, '90 Camry 3S-GTE, '90 Camry DX
'99 4Runner SR5 4WD 5VZ-FE
Previous: '88 Camry LE Alltrac 3S-GE BEAMS, '90 Camry 3S-GTE, '90 Camry DX
-
phattyduck - Established Member
- Posts: 1045
- Joined: Wed Dec 07, 2005 8:09 am
- Location: Pasadena, CA
Re: Radiator fan wiring
Mine is doing the same, and yes anytime the key is on the ON position...not to steal your thread , but i have the same problem...i have the ac removed
- 819_ay
- Club Member
- Posts: 216
- Joined: Fri Jun 24, 2011 1:32 pm
Re: Radiator fan wiring
Well, that's what's causing your problem. I don't know the specifics on the ST185 (to point to to the exact spot of the plug), but it is probably (one of) the plug(s) that went to the A/C Dryer (small, two wire oval) that need to be shorted together when deleting the A/C.819_ay wrote:Mine is doing the same, and yes anytime the key is on the ON position...not to steal your thread , but i have the same problem...i have the ac removed
-Charlie
'89 Camry LE Alltrac 3S-GTE - SV25/ST205 hybrid
'99 4Runner SR5 4WD 5VZ-FE
Previous: '88 Camry LE Alltrac 3S-GE BEAMS, '90 Camry 3S-GTE, '90 Camry DX
'99 4Runner SR5 4WD 5VZ-FE
Previous: '88 Camry LE Alltrac 3S-GE BEAMS, '90 Camry 3S-GTE, '90 Camry DX
-
phattyduck - Established Member
- Posts: 1045
- Joined: Wed Dec 07, 2005 8:09 am
- Location: Pasadena, CA
Re: Radiator fan wiring
Yeah key on, run position. With ac removed, even the rad fan will run if you don't jump that connector? I know which one you're talking about, so I'll jump it and see what happens and let ya know. Thank you
White 1995 BMW M3
Black '90 st185 Sold :(
Black '90 st185 Sold :(
-
Landon - Established Member
- Posts: 1092
- Joined: Tue Nov 11, 2008 12:05 am
- Location: Joseph, Oregon
Re: Radiator fan wiring
That's what it was. Remembered I pulled the jumper wire when I was doing work. Thanks for helping figure it out!
White 1995 BMW M3
Black '90 st185 Sold :(
Black '90 st185 Sold :(
-
Landon - Established Member
- Posts: 1092
- Joined: Tue Nov 11, 2008 12:05 am
- Location: Joseph, Oregon
Re: Radiator fan wiring
Good to know. And yes, both fans run together at all times even though one is called the radiator fan and one is called the condenser fan.Landon wrote:That's what it was. Remembered I pulled the jumper wire when I was doing work. Thanks for helping figure it out!
-Charlie
'89 Camry LE Alltrac 3S-GTE - SV25/ST205 hybrid
'99 4Runner SR5 4WD 5VZ-FE
Previous: '88 Camry LE Alltrac 3S-GE BEAMS, '90 Camry 3S-GTE, '90 Camry DX
'99 4Runner SR5 4WD 5VZ-FE
Previous: '88 Camry LE Alltrac 3S-GE BEAMS, '90 Camry 3S-GTE, '90 Camry DX
-
phattyduck - Established Member
- Posts: 1045
- Joined: Wed Dec 07, 2005 8:09 am
- Location: Pasadena, CA
Re: Radiator fan wiring
What you should have done is gotten a Celica AC fan, like the one you already have.
It's designed to push air.
The radiator fan is designed to pull air, and rotating it backwards [switching the 2 wires] means it doesn't work very well [the blades don't push as much air].
You would have gotten stock reliability cheaper than an aftermarket fan, and had the blades turning the right way.
It's designed to push air.
The radiator fan is designed to pull air, and rotating it backwards [switching the 2 wires] means it doesn't work very well [the blades don't push as much air].
You would have gotten stock reliability cheaper than an aftermarket fan, and had the blades turning the right way.
-
alltracman78 - GTFour God
- Posts: 4680
- Joined: Mon Aug 09, 2004 9:04 am
- Location: Ma
Re: Radiator fan wiring
i have the same problem but i didnt find where is the connector for make the shorted together..
somebody can help me?
somebody have an immagine of the connector?
thank you!
somebody can help me?
somebody have an immagine of the connector?
thank you!
Toyota Celica ST185L All track in italy!
-
sosia - Club Member
- Posts: 50
- Images: 31
- Joined: Sat Aug 06, 2011 11:17 am
- Location: orbetello (GR) 58015 tuscany Italy
1992 Toyota Celica
Re: Radiator fan wiring
I don't have an ST185, so somebody else should confirm, but it will look like this:sosia wrote:i have the same problem but i didnt find where is the connector for make the shorted together..
somebody can help me?
somebody have an immagine of the connector?
thank you!

(well, that's what was removed, the plug mates with that)
And should be located right near the firewall where the AC lines enter the cabin.
-Charlie
'89 Camry LE Alltrac 3S-GTE - SV25/ST205 hybrid
'99 4Runner SR5 4WD 5VZ-FE
Previous: '88 Camry LE Alltrac 3S-GE BEAMS, '90 Camry 3S-GTE, '90 Camry DX
'99 4Runner SR5 4WD 5VZ-FE
Previous: '88 Camry LE Alltrac 3S-GE BEAMS, '90 Camry 3S-GTE, '90 Camry DX
-
phattyduck - Established Member
- Posts: 1045
- Joined: Wed Dec 07, 2005 8:09 am
- Location: Pasadena, CA
Re: R: Radiator fan wiring
Ooooh ok!...thank you so mutch...i have found it!..

Toyota Celica ST185L All track in italy!
-
sosia - Club Member
- Posts: 50
- Images: 31
- Joined: Sat Aug 06, 2011 11:17 am
- Location: orbetello (GR) 58015 tuscany Italy
1992 Toyota Celica
Re: Radiator fan wiring
Landon wrote:aka flipped it and reversed the pins on the plug so it rotates in the opposite direction of stock. It is working as it should, pushing air across the radiator
That wont work so well.
The blades are shaped to "dig" the air when running in the normal direction.
Running in the other direction, it'll only move a fraction of the normal amount of air.
My collection of GT4 documentation: http://gt4.mwp.id.au
Daily: Celica GT4 ST185 (~170kw/atw)
Project: Toyota RA28 '77 Celica (1UZ-FE powered)
Chairman of the SA Classic Celica Club.
Daily: Celica GT4 ST185 (~170kw/atw)
Project: Toyota RA28 '77 Celica (1UZ-FE powered)
Chairman of the SA Classic Celica Club.
- MWP
- Established Member
- Posts: 1600
- Joined: Mon Jun 01, 2009 11:02 am
- Location: Adelaide, South Australia
12 posts
• Page 1 of 1
Return to Audio / Wiring / Interior
Who is online
Users browsing this forum: No registered users and 1 guest