North American Turbocoupe Organization



BCS
Gary S Offline
Administrator
#1
This is probably a stupid question butI'll ask it anyway. I am currently running a Gillis Valve. The stock BCS is (was) still in the car and the electrical connection was hooked up to it. I guess my question is can I leave the BCS hooked up (electrically) and not create a problem and/or can I just eliminate it altogether and leave the electrical connection hanging loose?
Gary Schweikert
[email protected]

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NATO Member
1987 Turbocoupe
155,000 Miles
5 Speed
Black w/Raven Interior
Gillis Valve
3" Downpipe
Dynomax Super Turbo Mufflers w/21/2" exhaust
Centerforce I Clutch and Pressure Plate
Other than the above, she is "bone stock."
Looking to "upgrade" this winter with some polishing and painting
NATO Member
1987 Turbocoupe
168,000 Miles
5 Speed
Black w/Raven Interior
http://www.turbotbird.com/showroom/data_...t_87tc.php
Reply

Jeff K Offline
Administrator
#2
You can leave it hooked up with no ill effects. If you remove it, or remove the electrical connector, you will get a KOEO code 81, which means a BCS problem. If you dont want to see the code, but still want to remove the BCS, put a 100 ohm 1 Watt resistor across the terminals of the electrical connector to fool the EEC into thinking the BCS is still there.

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Jeff Korn

88 Turbo Coupe: Intake and exhaust mods, T3 turbo at 20 psi, forced air intercooler, water injection, bypass valve, Ranger roller cam, subframes, etc., etc.. // 86 Tbird 5.0 (original owner): intake, exhaust, valvetrain mods, 100 HP nitrous, ignition, gears, suspension, etc., etc.... // 91 Escort: Bone stock winter car // 00 Windstar (wifes vehicle)
Jeff Korn

88 Turbo Coupe: Intake and exhaust mods, T3 turbo at 24 psi, forced air IC, water injection, BPV, Ranger cam, subframes, etc., etc.
86 Tbird 5.0 (original owner): intake, exhaust, valvetrain mods, 100 HP N2O, ignition, gears, suspension, etc., etc.
05 Taurus SEL Duratec daily driver
04 Taurus Duratec (wifes car)
02 Pontiac Grand Prix GT
95 Taurus GL Vulcan winter beater
67 Honda 450 Super Sport - completely customized
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Joe F Offline
Posting Freak
#3
Jeff - a question about this. I unplugged mine and get no indication of any problem. Is it supposed to flash the check engine light to notify you or what?

TIA.

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Joe F.

87 w/85K. Pro-5.0 shifter, Star stage II clutch, K&N, [email protected], MSD-6AL, Magnecore 10mm wires - complete exhaust coming soon!
JR's Place - My '87 Turbocoupe
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Jeff K Offline
Administrator
#4
A disconnected BCS will not light up the CEL.. the CEL only lights for emission related problems. If you run the KOEO codes, you will get a code 81 instead of a code 11 (system pass). No harm to get the code 81, but I personally like to see the code 11 when I run the codes!

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Jeff Korn

88 Turbo Coupe: Intake and exhaust mods, T3 turbo at 20 psi, forced air intercooler, water injection, bypass valve, Ranger roller cam, subframes, etc., etc.. // 86 Tbird 5.0 (original owner): intake, exhaust, valvetrain mods, 100 HP nitrous, ignition, gears, suspension, etc., etc.... // 91 Escort: Bone stock winter car // 00 Windstar (wifes vehicle)
Jeff Korn

88 Turbo Coupe: Intake and exhaust mods, T3 turbo at 24 psi, forced air IC, water injection, BPV, Ranger cam, subframes, etc., etc.
86 Tbird 5.0 (original owner): intake, exhaust, valvetrain mods, 100 HP N2O, ignition, gears, suspension, etc., etc.
05 Taurus SEL Duratec daily driver
04 Taurus Duratec (wifes car)
02 Pontiac Grand Prix GT
95 Taurus GL Vulcan winter beater
67 Honda 450 Super Sport - completely customized
Reply

Joe F Offline
Posting Freak
#5
10-4, thanks; I think I'll use your resistor fix to eliminate the potential error code.


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Joe F.

87 w/85K. Pro-5.0 shifter, Star stage II clutch, K&N, [email protected], MSD-6AL, Magnecore 10mm wires - complete exhaust coming soon!
JR's Place - My '87 Turbocoupe
Reply

Noname
Guest
#6
Hey Jeff, since you bring that up. I'm wondering if my CEL would be lit. My CEL bulb has been burned out for AWHILE and my lazy ass never felt like fixing it. When I run the codes with my test light setup, I get the Insufficient EGR code and the KS code, would my CEL be lit if it worked?

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1988 TurboCoupe - 5 Speed - 115k miles - Fully Loaded except Leather
5"x8" K&N in fenderwell, SVO T3 watercooled .63/.60 A/R, Gillis Valve @ 18 psi, HKS Super Sequential BOV, Walbro 255 HP Fuel Pump, Kirban AFPR, Bob's Big Log Header, 3" DP, No Cat, Dual 2.5" UltraFlos into ATR SS axle/tailpipes, Centerforce Dual Friction Clutch, Pro 5.0 Shifter, Koni Adjustable Struts, KYB Gas-A-Just Rear Shocks and Quads, Custom Progressive Rate 1" Lowering Springs, M.M. C/C Plates, Energy Suspension Parts Everywhere, PST Ball Joints/Tie Rod Ends, Autometer Boost/Vac & Air/Fuel Gauges
Reply

Jeff K Offline
Administrator
#7
Quote:Originally posted by dm22:
Hey Jeff, since you bring that up. I'm wondering if my CEL would be lit. My CEL bulb has been burned out for AWHILE and my lazy ass never felt like fixing it. When I run the codes with my test light setup, I get the Insufficient EGR code and the KS code, would my CEL be lit if it worked?


The KS disconnected / not working will definately not turn on the CEL. I doubt that the EGR flow code (I am guessing a 34 during KOER) would set a code either, as the EEC has no way to measure EGR flow during normal running anyway.

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Jeff Korn

88 Turbo Coupe: Intake and exhaust mods, T3 turbo at 20 psi, forced air intercooler, water injection, bypass valve, Ranger roller cam, subframes, etc., etc.. // 86 Tbird 5.0 (original owner): intake, exhaust, valvetrain mods, 100 HP nitrous, ignition, gears, suspension, etc., etc.... // 91 Escort: Bone stock winter car // 00 Windstar (wifes vehicle)
Jeff Korn

88 Turbo Coupe: Intake and exhaust mods, T3 turbo at 24 psi, forced air IC, water injection, BPV, Ranger cam, subframes, etc., etc.
86 Tbird 5.0 (original owner): intake, exhaust, valvetrain mods, 100 HP N2O, ignition, gears, suspension, etc., etc.
05 Taurus SEL Duratec daily driver
04 Taurus Duratec (wifes car)
02 Pontiac Grand Prix GT
95 Taurus GL Vulcan winter beater
67 Honda 450 Super Sport - completely customized
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