dan2286

I am going to be putting a 200r4 into my car. I was wondering if it is possible to use the pcm plus what ever sensors/switches that are used to just control the lock up converter? I will not be using a cc carb. I dont know if that system relies on any inputs from the carb, but I thought they use the brake light switch and a map sensor to determine when to lock up the converter. Has anyone tried this?

If this is not possible, what are the best options I have?

88 coupe

What car?

Norm

dan2286

Sorry, its an 86 Cutlass Supreme. Also I wanted to add the car did not come with a 200r4, I was wondering about using the pcm from the Olds Delta 88 I pulled the trans from.

88 coupe

Didn't the original trans (200C or 350C?) have a lockup converter? Either way, at the computer, there should be a connector, if not a wire, that supplies power to the lockup solenoid.

Quick and dirty, is to run a hot wire, through a toggle switch, to the A terminal on the trans. Power on = TC locked.

Or you can buy a TCI lockup kit.

Norm

BILL DEMMER

since you're not using the e-qjet, you won't have the required tps(throttle position sensor) giving it's input to the the ecm. lockup will never happen in this circumstance.

BILL DEMMER

not even close.

the "a" terminal is the positive supply from the brake pedal tcc switch. it only supplies power when the brakes are off.
the "d" terminal is the ground supplied by the ecm. the ecm grounds this line to engage the lockup clutch via the tcc sloenoid.

the proper quick and dirty method would be to switch the "d" terminal to ground.

you don't want the quick and dirty method!


bill

joe_padavano

I'm afraid you've both oversimplified this. Yes, the trans wants to see +12V on pin A and ground on pin D for the clutch to engage. If the car's trans connector is still in place, then the method I believe Bill was intending to describe would be to use the existing connector, which will already have fused power and a brake switch in series. The tan wire going to pin D needs to be cut and routed from the trans connector to a toggle to ground. Unfortunately your writeup wasn't clear about this.

To get back to the original question, the TCC function in the computer uses the VSS, TPS, trans gear switch, and coolant temp sensor inputs to operate the TCC solenoid. Using a non-computerized carb renders this function inoperative.

dan2286

Has any one used the tci lock up kit? How exactly does it operate? Does it operate auomatically, or does it use a switch like mentioned above? If possible I would like it to operate close to stock.

88 coupe

http://www.tciauto.com/Products/Inst...76600_inst.htm

Should answer any question you might have.

Norm

dan2286

Ok, thanks for the help. That sounds like it will be exactly what I want.

88 coupe

So, the TCC solenoid is grounded externally?

It has been a year (or two?) since I did my 700R4. I remember wiring the Brake/TCC switch into the circuit, after the fact, to make it a bit more sophisticated.

I missed the part about the carb replacement. Happens when I stray from "familiar territory".

Norm

joe_padavano

Yes, at least on the 200-4R it is. The ECU switches the ground side of the solenoid; the brake pedal switch cuts the power side as a backup. I'm looking at my 86 CSM as I write this to be sure, since memory is the second thing to go and I can't remember the first...

88 coupe

Thanks for the clarification.

Norm