Automatic won't rev past 4900 RPM

[turbokidd]

I have a question, and I'm not sure if it's auto-tranny related or not. I have a 91 GSX with a built automatic. I recently did a bunch of further mods (front mount, sheet metal intake, GT35R, etc) and now I'm trying to dial it in; the problem is that the engine is short-shifting around 4900 RPM. Of course this wasn't the case before, but this has been a work in progress for the last two years.

In everyone's opinion, is this an ECU issue or might the TCU have some part in this? It's on the dyno right now, and they are unable to dial it in.

Does anyone have any ideas??

Thanks!

Reid

 

[92awdgsx]

Shift it manually.

 

[turbokidd]

That's not a solution.

R

 

[spoolamatic]

Make sure that your TPS is hooked up and adjusted properly, and check all the plug going to the tranny .

 

[turbokidd]

Thanks.

It actually isn't transmission-related. I have an custom EPROM chip which had the stutterbox code, and the computer is looking for the clutch switch. I'm having a new one made that eliminates that altogether.

Reid