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#1 |
Used to have a truck
Join Date: May 2002
Location: port orchard WA
Posts: 1,552
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electrical terminal on the side of a TH350
I'm about to install a TH 350 in my truck. Its been a while since I have dealt with one of these but there is a eletrical terminal on the side . What is it? Isnt the Neutral safety switch built into the shifter or is that just on console shift models. I dont remember seeing one on the transmission itself.
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No truck :-( |
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#2 |
Registered User
Join Date: Aug 2001
Location: Jesup, GA
Posts: 571
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The TH350C has a electrical connection for the lockup converter.
Last edited by 383 Stroker; 01-25-2003 at 01:54 AM. |
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#3 |
Account Suspended
Join Date: Jan 2003
Location: il
Posts: 115
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you have to remember that soem th350 were C models and others were not
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#4 |
its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,693
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Mike, are you 100% sure it is a TH350 and not a 400?
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#5 |
"Ochre Ogre"
Join Date: Apr 2000
Location: Springfield, MN
Posts: 3,558
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Some of them will have a plug in on the passenger side. Is that the one you are talking about? If it is, then it is part of the emissions control. It's a temp switch that partly controls the vacuum solenoid. You won't need it so your best bet is to plug it.
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Bowtie Truck Stop Inc. Mid-West GM Truck Restoration Parts Supplier Your Key Parts, Auto Metal Direct, Dynacorn, and Goodmark dealer. like us @ www.facebook.com/BowtieTruckStop 1971 C-10 Suburban (Ochre) 1971 K-10 Suburban (Ochre) 1972 C-10 Suburban (Ochre) 1972 K-20 Suburban (Yellow- that just aint right!) Springfield, Minnesota 56087 |
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#6 |
Used to have a truck
Join Date: May 2002
Location: port orchard WA
Posts: 1,552
|
Bingo ! Thats what it is. Its a temp switch. Its on the passenger side just behind the kick down cable. It looks just like a water temperature sensor with one male 1/4" spade terminal . I had the valve body apart and I know its not a lockup model. Yep. Temp switch. Thanks for the help!
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#7 |
Used to have a truck
Join Date: May 2002
Location: port orchard WA
Posts: 1,552
|
Nah thats not it. Its a pressure switch. Its like the oil pressure sensor. You know. The kind like you find on a small block with an electric oil pressure gage or an idiot light. Its got 1/8" NPT threads and a 1" hex head with a single male spade terminal. Now I am confused. Its not a solenoid like youd find with a lockup . What is this thing. It's probably emissions related but what does it do?
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#8 |
Registered User
Join Date: Dec 1999
Location: Old Mission, MI, USA
Posts: 2,510
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If it is for the TCS system that came stock on these trucks, it is a high gear indicator. I have never seen one in person, but if it is a pressure switch like you say, then it must detect the pressure in the third gear clutch hydraulic circuit to indicate that the tranny is in third gear. The TCS system also uses a relay (mounted on the vacuum canister on the firewall), a vacuum solenoid in line between the carb and the distributor, and a temperature switch on the engine. Unless all this stuff is hooked up and working, you can ignore the switch on the tranny.
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Tim Last edited by Blazer1970; 01-25-2003 at 09:36 AM. |
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#9 |
Registered User
Join Date: Feb 2000
Location: Center City, MN, USA
Posts: 3,254
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I removed that switch and replaced it with the sender for my Autometer transmission temperature gauge.
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'70 cab, '71 chassis, 383, TH350, NP205. '71 Malibu convertible '72 Malibu hard top Center City, MN |
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#10 |
Used to have a truck
Join Date: May 2002
Location: port orchard WA
Posts: 1,552
|
Thats it. Got to be TCS. It came out of a 72 1/2 ton so that makes sense. Might be the good basis for a hi speed ignition retard setup for drag racing....hmmmm.
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