what the heck are these ??
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Joined: Jan 2002
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From: Addison. Il
what the heck are these ??
ok i ran into 2 broken sensors that i have no idea waht they are called or do...well i know the partial name for one of them... it goes on the thermostat housing, and its not the temp sensor..its called the TCS switch....waht the hell is it for??...another is in the front of the intake manifold, right next to the heater hose. can anyone help me?
Senior Member
Joined: Oct 2000
Posts: 659
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From: Chesapeake, VA
Car: '86 TransAm WS6
Engine: 305 TPI
Transmission: Custom TH700R4
What engine do you have? the sensors are different for each one. The one on the thermostat housing may be what releases the choke on a carb (with an electric choke) I had a vacuum switch in the same place on my '79.
The switch on the intake manifold sounds like a fan switch. That is, of course if you have an electric fan.
Time to go check the service manuals.........
The switch on the intake manifold sounds like a fan switch. That is, of course if you have an electric fan.
Time to go check the service manuals.........
Senior Member
Joined: Jan 2002
Posts: 943
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From: Chesapeake Va
what is hooked up to the sensors ?
thermostat + wires = coolant temp sensor for ECM
mainfold + vacuum hoses = emission system switch for exhaust butterfly valve on passenger side of motor below manifold.
thermostat + wires = coolant temp sensor for ECM
mainfold + vacuum hoses = emission system switch for exhaust butterfly valve on passenger side of motor below manifold.
Supreme Member
Joined: Sep 1999
Posts: 3,197
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From: Manassas VA
Car: 04 GTO
Engine: LS1
Transmission: M12 T56
A CCCS car should have 2 TVS's on it. One is for the EFE (exhaust butterfly, small vacuum lines) the other is for the EECS (charcoal canister, large vacuum lines)
The CTS is the only electric sensor in the coolant crossover.
The CTS is the only electric sensor in the coolant crossover.
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Joined: Jan 2002
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From: Addison. Il
yeah they both have 2 vacume lines on them. i am not running the butterfly flap cause i put headers on...and the other like ed said,, they are for the charcol canister...but which one?? im not running the smog pump cause i took all the AIR crap out, but still got the big canister right behind the drivers side headlight. i can post pics if needed.since im not running the butterfly,, can i cap that off then?
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Joined: Jan 2002
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From: Addison. Il
also.. there is a plug that has 2 additional wires on it..(this is behid the carb now) i know one line is for the EGR valve...and i thought the other was to the heat riser..this correct?
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