Thread: Transmission shutters from first to sencond gear during light acceleration

Did they install a new PCS aka EPC soleniod with the rebuild?

Likely it just got hot. If you have a stock pcm, the temp was likely running 220F ish and the trans was probably 230ish.

Tough to say.. most don't have the issue you had. But it was hot temps outside and your temp gauge on your car may not be the most accurate thing in the world. Although likely you had the AC on..so the fans were running and keeping you as cool as possible.

I usually don't do an external cooler because of the winter.

Mine has been doing this on and off since I bought the car in January. Mine seems to happen too....even under hard acceleration.

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mine also did the same exact thing. bought the car it didnt do it. 6 months later it started shuddering. then it stopped doing that. my initial thought was okay there is less clutch material so when it tried to change gears it would shudder because of lack of friction material during gear change. then after even a few more months of more driving it would just slip into gear because of NO friction material left. at least thats what seemed to happen to mine. now with a rebuilt trans i have 0 problems.

Except the OP is on a new rebuild. All clutches and bands should be updated/replaced along with seals. All parts checked and stuff like the EPC and 4th hub shaft replaced automatically.

I'm really unsure what to suggest to keep it from happening again.

Originally Posted by jsingh0072007

I'm not sure. When the car was at idle during the traffic jam the temp gauge was half way between 190 and 210 mark. Im not the greatest when it comes to Transmissions. All I know is that they did a complete rebuild including the TC. The owner told me when I dropped the car that these transmissions have updated parts due to them poorly being built and he was replacing them with those. I think he called them "hard parts'. I remember him also saying that there was a valve the caused the transmission to fail the first time but can't remember what he called it. When the car was at idle during the traffic jam the temp gauge was half way between 190 and 210 mark. Should I do anything to the trans to prevent this from happening again like installing a HD oil cooler or adding Lucas to it?

I would be curious to know what the builder meant by hard parts. Some builders will just test the control solenoids/valves and put them back in.

Ask the builder:
What valve went bad?
Was the valve body repaired or replaced?
Were all shift, control and apply valves and solenoids replaced?
If not, what parts were reused?