Wire Identification
Melting Slicks
Joined: Mar 2005
Posts: 2,094
Likes: 298
From: Midlothian VA
Team Owner
Joined: Jan 2006
Posts: 37,637
Likes: 3,118
From: Crossville TN
TCS system, I believe. Transmission Controlled Spark. The sending unit has two temp sensors in it. One is for low temp; the other is for high temp. That TCS system is defeated at cold and hot engine temps; it is only operational with warmed-up engine. You can do a SEARCH on the TCS system and learn all about it. Bottom line: You don't need it (and don't WANT it) unless you live in a state with ruthless EPA testing rules...or...you bleed "green". It was a stop-gap fix for base engines to be able to pass EPA regs without installing the AIR pump.
Last edited by 7T1vette; Aug 15, 2018 at 01:46 AM.
Thread Starter
Melting Slicks
Joined: Nov 2000
Posts: 2,507
Likes: 114
From: St. Louis Mo
TCS system, I believe. Transmission Controlled Spark. The sending unit has two temp sensors in it. One is for low temp; the other is for high temp. That TCS system is defeated at cold and hot engine temps; it is only operational with warmed-up engine. You can do a SEARCH on the TCS system and learn all about it. Bottom line: You don't need it (and don't WANT it) unless you live in a state with ruthless EPA testing rules...or...you bleed "green". It was a stop-gap fix for base engines to be able to pass EPA regs without installing the AIR pump.
Thread Starter
Melting Slicks
Joined: Nov 2000
Posts: 2,507
Likes: 114
From: St. Louis Mo
Great help from 7T1vette on green wire, but does anyone have a clue as to what the black connector is for? Thanks, Larry
Last edited by red topless gator; Aug 16, 2018 at 09:54 AM. Reason: spelling
Le Mans Master
Joined: Aug 2006
Posts: 7,426
Likes: 1,559
From: mount holly NC
2025 c3 ('74-'82) of the Year Finalist - Unmodified
2019 C3 of Year Finalist (appearance mods)
On the black connector are the wires Yellow & Dark Blue?
If yes then they might be for the washer pump in the wiper motor.
https://docs.google.com/viewer?a=v&p...TRkNTFkY2E0NmM
If yes then they might be for the washer pump in the wiper motor.
https://docs.google.com/viewer?a=v&p...TRkNTFkY2E0NmM
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