1g Auto shifting problem

[AlmostStock TSi]

When my ato shifts from 1-2 i get a bad sputter sometimes it even cuts out. Has anyone else had this problem? This is my 7th turbo DSM but first auto. It is a 91 GSX btw.

 

[AlmostStock TSi]

It only does it when its in "Power" mode.

 

[dmdstr91tsi]

This might not be the culprit, but i had a similar problem and it turned out to be my ECU was loose and not getting a good ground.

 

[hose101772]

ecu powers down the ignition/injection during upshifts but im going to say sticking clutch pack.oh only does it in power mode-well its electrical.auto control unit or ecu.

 

[AlmostStock TSi]

it has an mt ecu that i know is good. in power it pops and sputters only on the 1-2 upshift at wot. On economy it shifts at 6k but shifts good with no sputter. Does the a/t ecu control anything differently than a m/t ecu? I know of the injectors but thats all im sure of.

 

[hose101772]

slight tuning differences but i dont think it has different components.is your car crazy rich?

 

[AlmostStock TSi]

yeah, it is running pretty rich, but not bad enough to smoke(black).

 

[Cirus_93TSI]

i might be wrong here but if u have a mt ecu did u ever think maybe the ecu has no idea what to do when u turn "power" mode on because a mt doesnt have any such thing? to me it sounds like something electrical, most likely ur ecu, and if u have swapped out the stock ecu thats a good place to start checking for the cause

 

[AlmostStock TSi]

The Tcu is what changes the settings when you push the power button, not the Ecu.

 

[dbech77]

You are exactly correct. The TCU controls the timing retard (power/economy). Anyhow I have a 1992 talon tsi awn auto with a GVR4 manual tranny motor, 14b turbo, 450c injectors, and a manual ecu. It runs just fine in power mode so that definitely kills that theory. Because it's fine in economy, it could be the tcu, but probably not. I wonder if you are getting some kind of fuel cut? Maybe if you described the problem a little more. Sputtering doesn't sound like a tranny problem. Like I said before, the button controls the timing retard.

David.