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Joined: Sep 2006
Posts: 3
Grease Monkey
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OP
Grease Monkey
Joined: Sep 2006
Posts: 3 |
Hi, On the Muncie in my 55 Belair there is a switch on the shift cover on the 3-4 shift shaft. what is it for? It is a 1971 M20 trans.
Thanx Billy
Still chasing the dash
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Joined: Dec 2001
Posts: 2,142 Likes: 3
ChatMaster - 2,000
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ChatMaster - 2,000
Joined: Dec 2001
Posts: 2,142 Likes: 3 |
reverse lights, hard to find in good shape
John
John
1954 Belair Sport Coupe
1960 2 door Impala Hardtop 348/340HP 4spd
1962 2 door Impala Hardtop 409/409 4spd
1962 2 Door Biscayne Sedan 327/250 Auto
1977 Monza Mirage 305 4 Speed
1988 Celebrity Wagon
2018 GMC Sierra 2500 HD Diesel
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Joined: Sep 2006
Posts: 3
Grease Monkey
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OP
Grease Monkey
Joined: Sep 2006
Posts: 3 |
The switch is on the 3rd - 4th shift lever. Reverse lights would be hooked to reverse lever?
Billy
Still chasing the dash
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Joined: Sep 2006
Posts: 731
Oil Can Mechanic
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Oil Can Mechanic
Joined: Sep 2006
Posts: 731 |
could be the TCS (Transmission Controled Spark) switch. on pollution controled cars the spark advance vacuum was routed thru a solenoid that allowed vacuum advance only in 4th gear. this switch activated that solenoid.
Chevrolet
Valve In Head, Ahead In Value
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Joined: Sep 2006
Posts: 3
Grease Monkey
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OP
Grease Monkey
Joined: Sep 2006
Posts: 3 |
In my muncie parts manual it is listed as TCS. I didn't know what that ment. Now I understand. It's nothing I need!
Thanx Billy
Still chasing the dash
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Joined: Sep 2006
Posts: 731
Oil Can Mechanic
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Oil Can Mechanic
Joined: Sep 2006
Posts: 731 |
a good buddy once brought his chevelle into the shop for us to replace the clutch. while under the car I noticed the unused switch on his transmission. I wired it so the horn would honk when he hit 4th. never laughed so hard in my life when he brought it back and was trying to explain what was happening. it was a good thing he was a friend.
Chevrolet
Valve In Head, Ahead In Value
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