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
What would Darth Vader do
 
Gordon Rankin's Avatar
 
Join Date: Feb 2001
Location: Orange, California
Posts: 1,298
Send a message via Yahoo to Gordon Rankin
Life span of thermostat and ..

What is the normal life span of a thermostat?

And is there any way of testing the thermostat without removing it from the car? Reason being is that I think it may be bad..Knowing would be better.
__________________
1983 944 (2002 to now)
3-924's (Sold)
1967-912 (Traded)
NEVER put a used water pump in your car...

Last edited by Gordon Rankin; 09-01-2007 at 09:50 AM..
Old 08-31-2007, 11:53 PM
  Recommend this thread for the PelicanWiki    Reply With Quote #1 (permalink)
Greasy Member
 
many944s's Avatar
 
Join Date: Mar 2006
Location: Indiana
Posts: 1,458
Bad as in not opening, or stuck open, intermittent?

Of course, if it takes forever for the car to come up to temp, of if it never comes up to temp, it is stuck open...

If the car runs hot, and the radiator is still ambient temp to the touch, the thermo is not opening.

Intermittent problems can vary.

I've see t-stats last for a as little as a month, and as long as 20+ years!
There is no guarantee!

-Nick
__________________
Owner: Bennington Motorsports www.benms.com
Sponsor for Midwest Region 944-SPEC racing series
-When was your timing belt changed or tensioned??
-Yes, I'm the crazy man that will loan out my 9201. Just PM me, I will add you to the list and get it out ASAP.
Old 09-01-2007, 08:20 AM
  Recommend this thread for the PelicanWiki    Reply With Quote #2 (permalink)
What would Darth Vader do
 
Gordon Rankin's Avatar
 
Join Date: Feb 2001
Location: Orange, California
Posts: 1,298
Send a message via Yahoo to Gordon Rankin
Car is running hotter than normal after changing out thermo switch, testing fans, bleeding system, etc. Granted it has been very hot here but the fans normally had kept the temp in check.. Engine temperature hit the hot mark yesterday and fans did not seem to help all that much. Yes, the fans are working..





Quote:
Originally Posted by many944s View Post
Bad as in not opening, or stuck open, intermittent?

Of course, if it takes forever for the car to come up to temp, of if it never comes up to temp, it is stuck open...

If the car runs hot, and the radiator is still ambient temp to the touch, the thermo is not opening.

Intermittent problems can vary.

I've see t-stats last for a as little as a month, and as long as 20+ years!
There is no guarantee!

-Nick
__________________
1983 944 (2002 to now)
3-924's (Sold)
1967-912 (Traded)
NEVER put a used water pump in your car...
Old 09-01-2007, 09:56 AM
  Recommend this thread for the PelicanWiki    Reply With Quote #3 (permalink)
Greasy Member
 
many944s's Avatar
 
Join Date: Mar 2006
Location: Indiana
Posts: 1,458
Ah, you changed out a thermo-switch...
The one on the head for the DME, or the one on the radiator for the fans?

If it is the one on the rad for the fans, it may be actuating at a hotter temp than it should to kick on the fans. How long has it been since you flushed out your radiator?

Another ugly question is, have you checked the rotation of your water pump?
How long since the pump/belts have been replaced?

I have seen a 944 with the belts put on so tight, the bearing for the pump began to cock-sideways in the pump housing which reduced the flow, and caused the car to overheat. Once removed, a business card couldn't fit between the impeller and the housing while the other side had almost 3/16" clearance!

Just examining all possibilities..
-Nick
__________________
Owner: Bennington Motorsports www.benms.com
Sponsor for Midwest Region 944-SPEC racing series
-When was your timing belt changed or tensioned??
-Yes, I'm the crazy man that will loan out my 9201. Just PM me, I will add you to the list and get it out ASAP.
Old 09-01-2007, 10:56 AM
  Recommend this thread for the PelicanWiki    Reply With Quote #4 (permalink)
What would Darth Vader do
 
Gordon Rankin's Avatar
 
Join Date: Feb 2001
Location: Orange, California
Posts: 1,298
Send a message via Yahoo to Gordon Rankin
I replaced the fan thermo switch.

I didn't know about the other..Is this an early 944 situation? And should this also be changed periodically?

Last flushing was 3 years ago when I replaced all the cooling system hoses , fan switch, thermostat and put on a late model bleeder and a turbo radiator.
__________________
1983 944 (2002 to now)
3-924's (Sold)
1967-912 (Traded)
NEVER put a used water pump in your car...

Last edited by Gordon Rankin; 09-02-2007 at 12:03 PM..
Old 09-02-2007, 11:58 AM
  Recommend this thread for the PelicanWiki    Reply With Quote #5 (permalink)
Greasy Member
 
many944s's Avatar
 
Join Date: Mar 2006
Location: Indiana
Posts: 1,458
There are different thermo switches out there with varying temps for switching on the fans. If everything was working fine before swapping this out, I'm betting the switch you installed is a higher temp switch.

Though, it couldn't hurt to flush your coolant either!

-Nick
__________________
Owner: Bennington Motorsports www.benms.com
Sponsor for Midwest Region 944-SPEC racing series
-When was your timing belt changed or tensioned??
-Yes, I'm the crazy man that will loan out my 9201. Just PM me, I will add you to the list and get it out ASAP.
Old 09-02-2007, 12:39 PM
  Recommend this thread for the PelicanWiki    Reply With Quote #6 (permalink)
 
Now available:  101 Projects for Your Porsche Boxster!
What would Darth Vader do
 
Gordon Rankin's Avatar
 
Join Date: Feb 2001
Location: Orange, California
Posts: 1,298
Send a message via Yahoo to Gordon Rankin
I actually was having a problem with the fans not running. Got that fixed but now its running hotter. I will probably flush the system and replace my thermostat. And maybe try my old thermo switch just for fun!
__________________
1983 944 (2002 to now)
3-924's (Sold)
1967-912 (Traded)
NEVER put a used water pump in your car...
Old 09-02-2007, 04:35 PM
  Recommend this thread for the PelicanWiki    Reply With Quote #7 (permalink)
What would Darth Vader do
 
Gordon Rankin's Avatar
 
Join Date: Feb 2001
Location: Orange, California
Posts: 1,298
Send a message via Yahoo to Gordon Rankin
This is an update on my cooling problem.
When I initially replaced my thermo switch, I also replaced my 3 blade fan with a 6 bladed one.
What I didn't notice is that I had switched the positive for the ground, making the fan run in reverse. This in turn caused no fanning of the radiator. So if you still have a problem with non cooling , you might want to verify the polarity of the electrical lines to the fans. In the early 944, there is no "plug" for the 3 bladed fan, just a positive and ground wire that slip on.
__________________
1983 944 (2002 to now)
3-924's (Sold)
1967-912 (Traded)
NEVER put a used water pump in your car...
Old 11-04-2007, 07:53 PM
  Recommend this thread for the PelicanWiki    Reply With Quote #8 (permalink)
Reply

Thread Tools
Rate This Thread
Rate This Thread:

 


All times are GMT -8. The time now is 09:12 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.