North American Turbocoupe Organization



what is this?
TheBullSchmidt Offline
Member
#1
what is the round sensor on the passenger side of the engine bay just infront of the intercooler with 2 vacuum lines and a electrical connector coming out of it? i always thought it was some sort of boost controler but i t can be or atleast i wouldnt think so one vacuum line recieves a boost signal the other a vacuum. can some one tell me what it is?
1988 T-Bird TC auto, all stock
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jangus Offline
Senior Member
#2
It's the stock Boost Control Solenoid, better known as the BCS.
88TC 5speed, 160,000+, ranger roller, Evergreen T3, cone filter, manual boost controller.
One parts car still waiting to be taken apart.
Waiting in the garage: SC throttle body, SC intercooler, graphic equalizer, among other things.
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TheBullSchmidt Offline
Member
#3
how is it that it controls boost when the wastegate actuator has a direct boost signal from the compressor outlet?
1988 T-Bird TC auto, all stock
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natmac3 Offline
Administrator
#4
The tee off the compressor housing, thru the BCS, and back to the compressor inlet creates a "leak" in the boost signal to the wastegate.

The BCS controls the "amount" of the "leak" by pulsing to regulate the "leak", thereby regulating boost.
1987tc
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TheBullSchmidt Offline
Member
#5
ok i got ya thanks...
1988 T-Bird TC auto, all stock
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thumper Offline
Posting Freak
#6
Careful. They break easy.

I don't like them and often replace them with Gillis type valves.
A.K.A. Corey Bennett

1988 TC: white, all options, 5-speed swap, K&N cone filter, "Ranger" roller camshaft, .60/.63 T3, NXS (Gillis-style) Boost Valve, Bosch BOV w/ check valve, Stinger 3" with axle dump (18" glass pack), 95A 3G

Some pictures: http://s639.photobucket.com/albums/uu111/cbennett4041/
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