 TTS (Thermotime switch) location? |
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| eldiosyeldiablo |
  Jan 29 2005, 11:22 PM
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#1
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Member  Group: Members Posts: 129 Joined: 19-August 03 From: Roswell, GA Member No.: 1,047  |
Where is the TTS or thermotime switch? The wiring diagram/harness that I have from Jeff B. labels one wire going to the TTS but I cannot find it. The closest plug that sits near the end of this wire is the oil pressure switch.
Any pictures? I did not have any luck on the Pelican Parts diagram nor the Hayes door stop. Thank you, David (IMG:http://www.914world.com/bbs2/html/emoticons/beer.gif) |
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| McMark |
Jan 29 2005, 11:23 PM
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#2
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914 Freak! Group: Retired Admin Posts: 20,179 Joined: 13-March 03 From: Grand Rapids, MI Member No.: 419 Region Association: None |
Underneath the intake plenum on the passenger side. (IMG:http://www.914world.com/bbs2/html/emoticons/wink.gif)
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| bd1308 |
Jan 29 2005, 11:25 PM
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#3
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Sir Post-a-lot Group: Members Posts: 8,020 Joined: 24-January 05 From: Louisville,KY Member No.: 3,501 |
if i am right (which doesnt happen often) this thing looks like a bolt that runs beside the throttle body...remove the airbox and have a looksy. I've seen this bugger once b4 and wondered what it is. Actually i noticed it while 12V wires were touching the tin and arching....still dont know what those damn things connect to. Look there and someone join in if i messed up
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| JeffBowlsby |
Jan 29 2005, 11:31 PM
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#4
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914 Wiring Harnesses Group: Members Posts: 8,510 Joined: 7-January 03 From: San Ramon CA Member No.: 104 Region Association: None 
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Thats right David. The oil pressure sender is through a hole in the tin, the TTS is mounted to a bracket above the tin. The TTS is heat sensitive and acts as a switch to turn off the cold start valve as the engine warms up. |
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| eldiosyeldiablo |
Feb 1 2005, 07:53 AM
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#5
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Member Group: Members Posts: 129 Joined: 19-August 03 From: Roswell, GA Member No.: 1,047 |
Can someone give me a picture of the TTS and perhaps with it mounted on the engine? For the life of me I cannot find it.
Thank you, David |
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| JeffBowlsby |
Feb 1 2005, 08:41 AM
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#6
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914 Wiring Harnesses Group: Members Posts: 8,510 Joined: 7-January 03 From: San Ramon CA Member No.: 104 Region Association: None
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From PP
Attached image(s) 
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| JoeSharp |
Feb 1 2005, 09:04 AM
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#7
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In Irvine, Ca. May 15-18 Group: Members Posts: 3,947 Joined: 9-July 03 From: DeLand, Florida Member No.: 898 Region Association: South East States |
It is located in the background behind the throttel cable end housing, the silver part that you see are the threads and the dark shiny part is the bracket. Thats inbetween the cable end and the cloth covered vacume line. Hope you can see this.
Joe Attached image(s) 
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| eldiosyeldiablo |
Feb 4 2005, 09:55 PM
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#8
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Member Group: Members Posts: 129 Joined: 19-August 03 From: Roswell, GA Member No.: 1,047 |
I am still unable to find the TTS.
Jeff, thank you for the picture. The closest thing that I could find is what I believe is the oil pressure switch. I have circled what I think is the oil pressure switch in blue. Is the TTS suppose to be where I have the pink circle? What will happen if I leave the TTS off or not plugged in? Thank you, David Attached image(s) 
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| eldiosyeldiablo |
Feb 4 2005, 09:57 PM
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#9
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Member Group: Members Posts: 129 Joined: 19-August 03 From: Roswell, GA Member No.: 1,047 |
I even used my digital camera to take angle shot where my eye cannot see underneith the phelum but did not find anything.
(IMG:http://www.914world.com/bbs2/html/emoticons/confused24.gif) |
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| SirAndy |
Feb 4 2005, 10:07 PM
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#10
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Resident German Group: Admin Posts: 41,651 Joined: 21-January 03 From: Oakland, Kalifornia Member No.: 179 Region Association: Northern California |
yes! it's supposed to be screwed in there, you should be able to see the big threaded hole in the bracket right there ... (IMG:http://www.914world.com/bbs2/html/emoticons/wink.gif) Andy |
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| lapuwali |
Feb 4 2005, 11:31 PM
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#11
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Not another one! Group: Benefactors Posts: 4,526 Joined: 1-March 04 From: San Mateo, CA Member No.: 1,743  |
If you leave the TTS unplugged (or remove it completely), the cold-start valve will never turn on. Except in fairly cold conditions (below about 50dF), this means basically nothing. In really cold starts, it means you may have to crank awhile to get it to fire up. The cold-start valve is a fifth injector that adds a REALLY rich mixture only while the engine is cranking, and only if it's cold enough, and only for a few seconds. |
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