Vicoor

First I would like to go on record that I dont like the search function on this or any forum.

I finally got the FD running and trying to get it to work ok enough to get to the tuner.

I've run into a "glitch" with the idle control.
It wil be idling fine in closed loop and I rev the engine then the BAC duty goes to 50% which is over 2000rpm and it gets caught in a decel fuel cut loop.

You know, vroom, vroom, vroom, vroom....and wont go back to closed loop idle control unless I turn it off a restart it.

It doesn't seem logical that this 50% BAC duty that it goes to on closed throttle wouldn't be adjustable, but danged if I can find the setting.

Anyhow its a '94 FD stock throttle body and BAC valve with the mechanical dashpot removed

Running Haltech PS1000 and using ECU manager 1.13.1

any input would be appreciated.

C. Ludwig

iTrader: (27)

Start position is the setting you're looking for. You have it set too high.

Vicoor

Does it return to start position every time on closed throttle?

Need to verify, but I think the warm start position is set to 35% why would it get stuck at 50%

Incidentally the warm idle settles in right around 30%

C. Ludwig

iTrader: (27)

Yes. It should return to start duty any time the TPS goes to 0%. Set start duty a few percent higher than what the actually duty will be to maintain the desired warm idle speed.

Is the TPS sensor properly calibrated and returning to 0% in off throttle situation?

Vicoor

First, thanks for taking time to help me on this.

The tps has been calibrated and reads 0% at closed throttle.

I'll be going over to work on it more tonight, I'll be able to get the actual numbers but I think the start position is 5% above warm idle now.

I'll post actual numbers tonight would it help to see the tune?

C. Ludwig

iTrader: (27)

Yeah. Send me your map and, if you can get a log, that as well. chris@lms-efi.com

There's no reason it shouldn't work correctly if setup correctly.

Vicoor

I certainly expect that I've set something wrong, probably something else too...

Oh what else will raise it's ugly head?

Vicoor

Looks like I figured it out

It was idling at about 31-32% and the warm start value is 35% definitely not that.

I started zeroing out the values for A/C, P/S, and electrical load and voila it dropped down to 35% and adjusted itself down from there.

I have a switch hooked up to trigger a datalog, but it's not working. Tested before I started the car, but now no go.

Ill have to attend that.

Ive sent you the MAP.

thanks, Victor