Two Temperature Sending Units??
Thread Starter
Instructor
Joined: Jun 2001
Posts: 111
Likes: 0
From: HAMILTON,MA.USA
Two Temperature Sending Units??
Hi, Need some help: My 1970 LT1 has 2 sending units -----the one the right side has a 2 prong connection and the one on the left side is a 1 prong connection.
Why are there 2 of them? --- Also where can I find a new 2 prong connector because the one that I have is in poor shape.
Thank you.
Why are there 2 of them? --- Also where can I find a new 2 prong connector because the one that I have is in poor shape.
Thank you.
Team Owner
Joined: Aug 2006
Posts: 24,125
Likes: 15
From: Columbia Missouri
The one on the driver's side is the temp sender for the gauge. It should have a single terminal. The one on the passenger side is actually a switch, called a TCS I think. It's not needed unless you want to stay stock and is a 3 way system between the engine temp, the carb, and the manual transmission. Seems that when the engine is cold it kicks the idle up in gears 3 and 4? I could be wrong about what exactly it does, but most people remove it if someone before didn't remove it already.
Le Mans Master
Joined: Mar 2001
Posts: 6,640
Likes: 287
From: Ann Arbor Michigan
The one on the driver's side is the temp sender for the gauge. It should have a single terminal. The one on the passenger side is actually a switch, called a TCS I think. It's not needed unless you want to stay stock and is a 3 way system between the engine temp, the carb, and the manual transmission. Seems that when the engine is cold it kicks the idle up in gears 3 and 4? I could be wrong about what exactly it does, but most people remove it if someone before didn't remove it already.
It also cuts off the vacuum advance based on what gear you are in (should be a switch in the trannie too. Here's a place to find connectors.http://www.wiringharnessparts.com/main_page.html
