Muncie Experts Step Inside Please...
Thread Starter
Pro
Joined: Apr 2005
Posts: 666
Likes: 5
From: Mt. Pleasant SC
Muncie Experts Step Inside Please...
I have the M-22 4-spd on my 73 L-82. While underneath my car the other day I notice something hanging down from the side of my tranny case. Looks like a wire with a rubber boot, and it looks to me that it should be connected near the front and bottom of the tranny case on the driver's side. I can tell you what it is not. It's not the speedo cable and not the reverse light. Can someone PLEASE tell me what it could be?
Drifting
Joined: Sep 1999
Posts: 1,970
Likes: 91
I sounds like the black wire that connects to the trans control spark switch,(TCS). The round plug like terminal pushes onto the pin of the switch. The switch is located on the driver front of the trans. Threads into the trans, with a 5/8" or so wrench.
The inner(bussiness end)of the switch in the trans, is a steel ball that gets pushed in after shifting into third or 4th gear. Once pushed in and "energized "it grounds the TCS system allowing vacuum advance to the distributor. The switch is not effected in 1st or 2nd gear. All this is assuming the rest of your system is functional.
The inner(bussiness end)of the switch in the trans, is a steel ball that gets pushed in after shifting into third or 4th gear. Once pushed in and "energized "it grounds the TCS system allowing vacuum advance to the distributor. The switch is not effected in 1st or 2nd gear. All this is assuming the rest of your system is functional.
Drifting
Joined: Sep 1999
Posts: 1,970
Likes: 91
This switch tends to get stuck over time. Pull it out and see if the ball moves in and out freely. A solvent wash will loosen it up. Its the easiest part of the system to check.I have seen adjustments made to correct timing, only to find a stuck switch being energized all the time,the real problem.
Thread Starter
Pro
Joined: Apr 2005
Posts: 666
Likes: 5
From: Mt. Pleasant SC
So the consensus it's the TCS selenoid. I don't know how long it's been disconnected, but I didn't notice it the last time I was under the car not too long ago. Also doesn't appear to affect much of anything.
Thanks guys,
Chris
Thanks guys,
Chris
Melting Slicks
Joined: Mar 2002
Posts: 2,140
Likes: 7
From: Ohio
No it is not the TCS solinoid it is on the intake at the right of the carburetor with hoses and electrical hooked to it. The part on the trans is the switch to energize the timer on the left firewall and after 30 seconds delay it sends power to the TCS and the plunger moves and allows vacumn to flow to the distributor. That causes the idle to increase if in 4th gear sitting still. If any parts are removed which most are don't worry about any of it.
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Thread Starter
Pro
Joined: Apr 2005
Posts: 666
Likes: 5
From: Mt. Pleasant SC
Originally Posted by LYLE
No it is not the TCS solinoid it is on the intake at the right of the carburetor with hoses and electrical hooked to it. The part on the trans is the switch to energize the timer on the left firewall and after 30 seconds delay it sends power to the TCS and the plunger moves and allows vacumn to flow to the distributor. That causes the idle to increase if in 4th gear sitting still. If any parts are removed which most are don't worry about any of it.