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ddye Samba Member
Joined: July 14, 2010 Posts: 357 Location: Dallas, TX
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Posted: Wed Jun 15, 2011 5:53 pm Post subject: Radiator Fan Won't Shut Off |
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Oddness has occurred. Any ideas why the radiator fan won't turn off? I replaced the switch behind the headlight about 2 months ago and the temperature sensor that plugs into the radiator at the same time. It was working fine and then today when i started the van the fan came on....it was cold. Now every time I turn the key the fan comes on.
Curious _________________ 1988 Westy
2.1 Boston Bob Rebuild
"Nelly" |
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danfromsyr Samba Member
Joined: March 01, 2004 Posts: 15144 Location: Syracuse, NY
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Posted: Wed Jun 15, 2011 6:06 pm Post subject: |
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is your AC left on?
this will happen if the switch is left bumped on on some years,. _________________
Abscate wrote: |
These are the reasons we have words like “wanker” |
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ddye Samba Member
Joined: July 14, 2010 Posts: 357 Location: Dallas, TX
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Posted: Wed Jun 15, 2011 6:09 pm Post subject: |
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danfromsyr wrote: |
is your AC left on?
this will happen if the switch is left bumped on on some years,. |
That was it. The wife drove yesterday and didn't get it all the way off.
Thanks!
_________________ 1988 Westy
2.1 Boston Bob Rebuild
"Nelly" |
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debbiej Samba Member
Joined: December 14, 2008 Posts: 1556 Location: las cruces, nm
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Posted: Wed Jun 15, 2011 10:12 pm Post subject: |
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better than won't turn on |
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peasant Samba Member
Joined: April 25, 2009 Posts: 321
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Posted: Thu Jun 16, 2011 7:41 am Post subject: |
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debbiej wrote: |
better than won't turn on |
True, I felt so much better and so did my van when I replaced parts to get it working properly. _________________ 89 wolfsberg weekender carat
89 Westfalia |
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Memphalia Samba Member
Joined: June 03, 2010 Posts: 87 Location: Memphis, TN
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Posted: Fri Dec 30, 2011 12:59 pm Post subject: |
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Ok so I was driving home today and the radiator fan kicked on high and ran on high the rest of the way home and when I turned off the ignition, the fan remained on. I checked the AC to make sure that it is off an it is. Any ideas? _________________ 1989 Westfalia (Wolfram Gray)(Mona)
2004 Toyota 4Runner SR5 4x4
2005 Volvo V70 |
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SCM Samba Member
Joined: January 26, 2011 Posts: 3119 Location: Bozeman MT
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Posted: Fri Dec 30, 2011 1:41 pm Post subject: |
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Memphalia wrote: |
Ok so I was driving home today and the radiator fan kicked on high and ran on high the rest of the way home and when I turned off the ignition, the fan remained on. I checked the AC to make sure that it is off an it is. Any ideas? |
It's normal for them to stay on for a few minutes after turning off the vehicle when it's hot. _________________ '91 Westfalia GL Automatic (GTA "Turbo" Rebuild w/Peloquin) and 2.3L GoWesty Engine |
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Memphalia Samba Member
Joined: June 03, 2010 Posts: 87 Location: Memphis, TN
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Posted: Fri Dec 30, 2011 2:42 pm Post subject: |
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Yes, I am aware of this, but it will not shut off. I had to disconnect the battery to turn it off and 2 hours later when I reconnected the fan came back on. Possibly relay or fan switch? HELP _________________ 1989 Westfalia (Wolfram Gray)(Mona)
2004 Toyota 4Runner SR5 4x4
2005 Volvo V70 |
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crazyvwvanman Samba Member
Joined: January 28, 2008 Posts: 9939 Location: Orbiting San Diego
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Posted: Fri Dec 30, 2011 2:59 pm Post subject: |
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Pull fuse #1, on left end of fuses. Does this stop the fan running?
What year?
Mark
Memphalia wrote: |
Yes, I am aware of this, but it will not shut off. I had to disconnect the battery to turn it off and 2 hours later when I reconnected the fan came back on. Possibly relay or fan switch? HELP |
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Memphalia Samba Member
Joined: June 03, 2010 Posts: 87 Location: Memphis, TN
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Posted: Fri Dec 30, 2011 4:10 pm Post subject: |
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Yep, pulled the fuse and still running. I also unplugged the radiator fan switch and still running. _________________ 1989 Westfalia (Wolfram Gray)(Mona)
2004 Toyota 4Runner SR5 4x4
2005 Volvo V70 |
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crazyvwvanman Samba Member
Joined: January 28, 2008 Posts: 9939 Location: Orbiting San Diego
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Posted: Fri Dec 30, 2011 4:51 pm Post subject: |
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Ok, pull the relay from relay socket #5. Count from top left of main relay panel. That is the medium speed fan relay for the A/C. If that stops it, there is a problem in the back, in the A/C wiring or A/C relays back there.
If it doesn't stop it, could be the highest speed relay hidden up above the main relay panel, or it could be a weird wiring problem from the back A/C as a wire from the A/C connects to the control line for the high speed relay.
Mark
Memphalia wrote: |
Yep, pulled the fuse and still running. I also unplugged the radiator fan switch and still running. |
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Memphalia Samba Member
Joined: June 03, 2010 Posts: 87 Location: Memphis, TN
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Posted: Fri Dec 30, 2011 8:26 pm Post subject: |
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THere is no relay in the 5 spot, and i have been driving daily for 2 years like this (with everything working properly). The fan is stuck on high mode. How can I identify the highest speed relay hidden up above the main relay panel and test it? Where is it available for replacement? I ordered this
http://www.van-cafe.com/home/van/smartlist_1436/relay.html
Is this what should be in the 5 spot?
Oh, by the way it is an 89 Westy Full camper _________________ 1989 Westfalia (Wolfram Gray)(Mona)
2004 Toyota 4Runner SR5 4x4
2005 Volvo V70 |
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crazyvwvanman Samba Member
Joined: January 28, 2008 Posts: 9939 Location: Orbiting San Diego
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Posted: Fri Dec 30, 2011 9:34 pm Post subject: |
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All 89 vans should have the relay in position 5 unless they are Syncros without A/C. That relay you linked to is not the right one for position 5, as far as I know.
In any case the missing position 5 relay isn't causing this problem. The high speed relay is up inside the dash area at the left end. It is hard to see without removing something. Look at Bentley page 87.5 and the drawing on the upper right shows the relay behind the left dash vent. That is the highest speed rad fan relay, 3rd stage.
(on left of same page shows relay panel with arrow to position 5 for 2nd speed fan relay)
I can't find the right relays on VanCafe site so here is another source.
This is the highest speed 3rd stage fan relay-
http://www.autohausaz.com/search/product.aspx?sid=...an%20Relay
This one will work in a pinch for 3rd stage-
http://www.autohausaz.com/search/product.aspx?sid=...3604@Relay
This (upper) one is what I would expect in position 5-
http://www.autohausaz.com/search/product.aspx?sid=t0h4evvhuh0ojx45zqn0e345&partnumber=141951253B
It sounds like your 3rd stage fan relay stuck in the on position. If so, I wonder why it was coming on at all this time of year, unless the low speed isn't working and that is a common failure that should be checked after you get past this constant fan problem.
Mark
Memphalia wrote: |
THere is no relay in the 5 spot, and i have been driving daily for 2 years like this (with everything working properly). The fan is stuck on high mode. How can I identify the highest speed relay hidden up above the main relay panel and test it? Where is it available for replacement? I ordered this
http://www.van-cafe.com/home/van/smartlist_1436/relay.html
Is this what should be in the 5 spot?
Oh, by the way it is an 89 Westy Full camper |
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Memphalia Samba Member
Joined: June 03, 2010 Posts: 87 Location: Memphis, TN
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Posted: Fri Dec 30, 2011 10:35 pm Post subject: |
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Thank you sir, I have ordered and will try! _________________ 1989 Westfalia (Wolfram Gray)(Mona)
2004 Toyota 4Runner SR5 4x4
2005 Volvo V70 |
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koolmoe Samba Member
Joined: November 15, 2008 Posts: 382 Location: Annapolis, MD
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Posted: Mon May 05, 2014 12:35 pm Post subject: |
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Just FYI and a bump. My fan had been running as soon as I started the Bus for about a week and kept meaning to search here to figure out why...and did today, and first result was this thread...and went out and checked and indeed the AC knob was half-way 'on'...
(which is odd cause my AC hasn't been charged in years and I never use it - probably one of the kids messing around)...
So thanks for the thread and replies. Turning off knob stopped the fan startup. Phew! Love the easy fixes, so rarely the result on this old gal...
KM _________________ --
Current: 1990 Westy GL (Savannah. Good to be back!)
from '95 til 2008: 1995 Pathfinder (frame rusted out, charitable parts donation)
from '91-'95: 1982 Westy Diesel (Smokey. Traded in for far too little!)
from '87-'91: 1980 VW Rabbit (my econoPorsche - passed on) |
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danfromsyr Samba Member
Joined: March 01, 2004 Posts: 15144 Location: Syracuse, NY
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Posted: Mon May 05, 2014 12:45 pm Post subject: |
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WOW, blast from the past.
and to note that this can be a benefit as well.
those whose AC works this way can turn the Rad fan ON to help after a long hard or hot hill/mtn/traffic
just make sure you turn it back OFF once things are evened out.
*note I've heard at least 1 story of a burned out rad fan or AC clutch from prolonged power demand. food for thought. _________________
Abscate wrote: |
These are the reasons we have words like “wanker” |
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Pastelweis Samba Member
Joined: June 02, 2010 Posts: 92 Location: Stockholm / Los Angeles
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Posted: Sun Sep 25, 2016 5:47 am Post subject: Re: Radiator Fan Won't Shut Off |
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@memphalia I have the exact same problem, did you find a solve in the end? |
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rustbuckets Samba Member
Joined: July 02, 2016 Posts: 5 Location: Georgia
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Posted: Thu Nov 21, 2019 8:21 am Post subject: Re: Radiator Fan Won't Shut Off |
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Just came across this post and hoping someone will see this. I am having the same problem that a previous poster described with their radiator fan staying on even after the van is turned off. However, when I pull the fuse for the fan it turns off. Would anyone happen to know what that would mean the problem is? |
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MarkWard Samba Member
Joined: February 09, 2005 Posts: 17155 Location: Retired South Florida
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Posted: Thu Nov 21, 2019 9:16 am Post subject: Re: Radiator Fan Won't Shut Off |
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First step would be to unplug the radiator fan temp switch and see if the fan shuts off. You need to remove the upper grill. If you haven’t done this, you need to learn. Report back. _________________ ☮️ |
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damagd Samba Member
Joined: March 11, 2015 Posts: 250 Location: Lancaster, PA
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Posted: Sun Jun 21, 2020 7:56 am Post subject: Re: Radiator Fan Won't Shut Off |
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I am having the same problem. 1990 automatic. I was climbing a steep grade outside Buffalo, Wyoming and the fan came on at high speed as usual when the temp went up, however it stayed on even after I turned the van off. Had to disconnect the battery. I tried pulling fuse #1, relay #5 (the grey one labeled 53), and the plug on the radiator behind the lower grill. Nothing made it stop. I drove about 20 miles like this and now I fear it may have burned up my alternator as voltage kept dropping. What should I try next? |
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