Parts Catalog Accessories Catalog Tech Info Tech Forums
 
  Search our site:    
 Cart  | Project List | Order Status | Help    
  We salute a legendary member of the community.
Thank you for selflessly sharing your wisdom with us...
Go Back   Pelican Parts Technical BBS > 1- Porsche Technical Forums > Porsche 924/944/968 Technical Forum

Reply
 
LinkBack Thread Tools Rate Thread
Author
Thread Post New Thread    Reply
Registered User
 
Join Date: Dec 2003
Location: Iowa
Posts: 72
Garage
Thermo Fan Swith replace 944 S2

Help!

1989 944 S2.

My fans are running full time. It drained the battery overnight.

I just ordered the 85 degree thermo fan switch from Pelican. It should be here tomorrow. I hope that it's not the relay.

and now -

How do I get the connector off the old switch? I pulled on the wires but it doesn't want to come off.

And - how do I drain and then refill and bleed the coolant? I remember having this done once and there was a step where you had to let out some air.

I'm not a total clutz - but I can use some pointers and tips here.

Dick
Old 02-22-2007, 06:54 AM
  Recommend this thread for the PelicanWiki    Reply With Quote #1 (permalink)
Registered User
 
SoCal Driver's Avatar
 
Join Date: Feb 2002
Location: Costa Mesa
Posts: 8,587
Garage
You have to get the right radiator mounted temp switch for your car. The early temp switches will not work with your electrical system. Something about the $150 relay. Later temp switches have two outputs -- three prongs.

Was a write up about trouble shooting the later cooling fan system somewhere. Try www.clarks-garage.com and searching this forum.
__________________
Hugh - So Cal 83 944 Driver Person
NOT a 'real' Porsche -- Its Better!!!!
When was the last time you changed your timing and balance belts and/or cam chain and tensioner?
New Users please add your car's year and model to your signature line!
Never break more than you fix!
Old 02-22-2007, 06:59 AM
  Recommend this thread for the PelicanWiki    Reply With Quote #2 (permalink)
Registered User
 
EMBPilot's Avatar
 
Join Date: Sep 2006
Location: Jersey Shore
Posts: 655
Garage
Send a message via AIM to EMBPilot Send a message via Yahoo to EMBPilot
i would disconnect your battery, disconnect the fans, then remove the fan housing from the radiator. using the drain plug, you may only need to drain about two liters out of the system to get the coolant level below the thermo switch.

the wire clip should come off the back of the thermo switch with a gentle tug. you'll need a deep 30MM socket for the thermo switch and a new crush washer, i think it happens to the be same washer as the oil pan plug crush seal. i think the torque on the thermo switch is 28NM ?.
i just did this when i replaced my rad.
__________________
1995 993 C2
1988 944 <gone but not forgotten

Last edited by EMBPilot; 02-22-2007 at 07:12 AM..
Old 02-22-2007, 07:02 AM
  Recommend this thread for the PelicanWiki    Reply With Quote #3 (permalink)
Registered User
 
Join Date: Dec 2003
Location: Iowa
Posts: 72
Garage
The switch in the car has the number 851 on it - so I ordered the 85 degree swithc.

Dick

Quote:
Originally posted by SoCal Driver
You have to get the right radiator mounted temp switch for your car. The early temp switches will not work with your electrical system. Something about the $150 relay. Later temp switches have two outputs -- three prongs.

Was a write up about trouble shooting the later cooling fan system somewhere. Try www.clarks-garage.com and searching this forum.
Old 02-22-2007, 07:05 AM
  Recommend this thread for the PelicanWiki    Reply With Quote #4 (permalink)
Registered User
 
Join Date: Dec 2003
Location: Iowa
Posts: 72
Garage
>you'll need a deep 30MM socket for the thermo switch

Are we talking about the same part? Mine is 17mm.

Maybe I better post a photo before I remove it.

Dick

>>>>>>>>>>>>
Quote:
Originally posted by EMBPilot
i would disconnect your battery, disconnect the fans, then remove the fan housing from the radiator. using the drain plug, you may only need to drain about two liters out of the system to get the coolant level below the thermo switch.

the wire clip should come off the back of the thermo switch with a gentle tug. you'll need a deep 30MM socket for the thermo switch and a new crush washer, i think it happens to the be same washer as the oil pan plug crush seal. i think the torque on the thermo switch is 28NM ?.
i just did this when i replaced my rad.
Old 02-22-2007, 11:47 AM
  Recommend this thread for the PelicanWiki    Reply With Quote #5 (permalink)
Registered User
 
EMBPilot's Avatar
 
Join Date: Sep 2006
Location: Jersey Shore
Posts: 655
Garage
Send a message via AIM to EMBPilot Send a message via Yahoo to EMBPilot
maybe not, i thought you were talking about the switch on the radiator that plugs in on the drivers side below the hose that connects to the top of the head.
__________________
1995 993 C2
1988 944 <gone but not forgotten
Old 02-22-2007, 11:55 AM
  Recommend this thread for the PelicanWiki    Reply With Quote #6 (permalink)
 
Now available:  101 Projects for Your Porsche Boxster!
Reply

Thread Tools
Rate This Thread
Rate This Thread:

 


All times are GMT -8. The time now is 03:58 AM.


 
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2011 Pelican Parts - Posts may be archived for display on the Pelican Parts Website -    DMCA Registered Agent Contact Page
 

DTO Garage Plus vBulletin Plugins by Drive Thru Online, Inc.