Chevy Nova Forum banner
1 - 6 of 6 Posts

·
Premium Member
Joined
·
1,885 Posts
Tcs..

Thanks for fixing the pic.
what is the TCS?
TCS stands for Transmission Controlled Spark...GM started using this in 1970. That relay was riveted to the rain gutter and the wiring ran to a switch on the tranny and to a vacuum solenoid on the intake manifold. The system only allowed for full vacuum advance when the car was in high gear...this was an early smog control device.

The relays in your photo look very similar to the TCS relay...I was just being funy with the triple TCS comment...good luck.

wilma:D
 
1 - 6 of 6 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Top