4l60 hitting limiter

**Dave357LT1** · 03-16-2011, 03:19 PM

Thanks for lookin at at it Greg Rob. I loaded it in and it seems to be doing the same BUT i noticed that my tps voltage is low .58ish on idle. I know alot of the tune is based off that. Im gonna try to get that right and see what happens. I seen that the max line pressure was 110 i think after i asked them to lower it to stock and stock is around 90. Yes im not to happy with them. I had to pay $75 and shipping to send it there and back AFTER i paid them the first time. And shipping back the third time. Brian will atleast listen to you. Kieth is not friendly at all and just says somethin must be wrong on ur end. Never going to use them again.

**Dave357LT1** · 03-19-2011, 04:36 PM

Fixed it!! It was in the tune. Lowered the hot and cold mph and rpm shift points. Not sure what one exactly did it but its shifting perfect now. Sad that my very limited tuning skills is the one who had to figure it out not PCMFORLESS but i guess it could be the settings or hard parts in the tranny that were changed in the tranny during the rebuild.

**gregrob** · 03-19-2011, 05:47 PM

Originally Posted by Dave357LT1

Fixed it!! It was in the tune. Lowered the hot and cold mph and rpm shift points. Not sure what one exactly did it but its shifting perfect now. Sad that my very limited tuning skills is the one who had to figure it out not PCMFORLESS but i guess it could be the settings or hard parts in the tranny that were changed in the tranny during the rebuild.

That was the fine tuning I was talking about, that's the next step I would have taken were I tuning your car.

What I did in the tune was adjust the VSS diagnostic error RPM. PCMFORLESS left it stock even though you have a large stall. Without that fixed in the tune it was NEVER going to shift right at WOT.

Glad to hear its working well for you now.

**Slowlt1** · 05-08-2011, 09:13 AM

I'm having the same exact issue with my 94 4l60e. Did you tune with C.A.T.S to correct your problem? If so where did you find the "cold" shift points. I only see normal, performance, kickdown and cruise up/down shift points. I have lowered them dramatically with better results but always tags the limiter 2-3. Any advice is appreciated, thanks.