 Thermostat Question, How does it work? |
|
|
|
Porsche, and the Porsche crest are registered trademarks of Dr. Ing. h.c. F. Porsche AG.
This site is not affiliated with Porsche in any way. Its only purpose is to provide an online forum for car enthusiasts. All other trademarks are property of their respective owners. |
|
|
| pbanders |
 May 4 2022, 09:16 AM
Post
#1
|
|
Senior Member  Group: Members Posts: 943 Joined: 11-June 03 From: Phoenix, AZ Member No.: 805  |
While I may have done a transistor-by-transistor analysis of the ECU and used pSpice to simulate the injector driver circuit, I've never done squat with my thermostat system. Basically, it works, so I leave it alone.
But I'm curious, how do the bellows work? When the car is hot, the bellows expand, and the cable tension is released. Is there an internal spring? Something about wax? Help me out here, thanks. |
   |
 
|
  |
Replies
| mrholland2 |
May 4 2022, 09:17 AM
Post
#2
|
|
Senior Member Group: Members Posts: 761 Joined: 7-September 11 From: Santa Maria,CA Member No.: 13,531 Region Association: Central California |
QUOTE(pbanders @ May 4 2022, 08:16 AM)  While I may have done a transistor-by-transistor analysis of the ECU and used pSpice to simulate the injector driver circuit, I've never done squat with my thermostat system. Basically, it works, so I leave it alone. But I'm curious, how do the bellows work? When the car is hot, the bellows expand, and the cable tension is released. Is there an internal spring? Something about wax? Help me out here, thanks. I think there is a spring on the flap shaft that pulls against the thermostat. |
|
|
|
| Mark Henry |
May 4 2022, 09:35 AM
Post
#3
|
|
that's what I do! Group: Members Posts: 20,065 Joined: 27-December 02 From: Port Hope, Ontario Member No.: 26 Region Association: Canada |
QUOTE(mrholland2 @ May 4 2022, 11:17 AM) QUOTE(pbanders @ May 4 2022, 08:16 AM) While I may have done a transistor-by-transistor analysis of the ECU and used pSpice to simulate the injector driver circuit, I've never done squat with my thermostat system. Basically, it works, so I leave it alone. But I'm curious, how do the bellows work? When the car is hot, the bellows expand, and the cable tension is released. Is there an internal spring? Something about wax? Help me out here, thanks. I think there is a spring on the flap shaft that pulls against the thermostat. Close, the spring on the flaps opens the flaps and provides tension for the cable, as the bellows expands/contracts it lets the flaps move. If your T-stat bellows is always expanded then she be fuched. |
|
|
|
Posts in this topic
pbanders Thermostat Question May 4 2022, 09:16 AM
914werke Brad are you are asking what is contained inside t... May 4 2022, 10:08 AM mepstein Always test it inside the bracket or it will over ... May 4 2022, 10:21 AM emerygt350 I ripped my old one apart pulling it out of the ca... May 4 2022, 11:42 AM pbanders Here's a 914 thermostat in operation:
https:/... May 4 2022, 12:43 PM barefoot This may help:
May 4 2022, 01:19 PM iankarr I believe there’s a liquid (alcohol?) sealed ins... May 4 2022, 02:00 PM
pbanders Ian Karr is correct, the working fluid is alcohol.... May 19 2022, 11:08 AM |
1 User(s) are reading this topic (1 Guests and 0 Anonymous Users)
0 Members:
|
Lo-Fi Version | Time is now: 9th May 2025 - 02:41 PM |
Invision Power Board
v9.1.4 © 2025 IPS, Inc.