last chance for tranny

[Jason Long]

Just wondering if there was anything that i could put in my 4t65-HD(Pontiac Grand Prix) that would make it shift better. Everyone i have talked to has told me not to do any kind of flush or evacuation of fluid from the TC, which leaves out AutoRX from what i have read. I already have some in the oil, but might only get another 1000 miles total on the car. Can anyone make any suggestions. I am getting ready to sell the car and want to clean it up some.

[ August 20, 2004, 11:16 PM: Message edited by: Jason Long ]

 

[jorton]

Are the engine idle and timing set correctly? If it has high miles, you can advance the timing 3-4 degrees ahead of spec.

I was having problems with my daily beater until I changed to Mobil 1 atf but you wouldn't want to make that investment if your selling the car soon.
Joe

 

[T-Keith]

I have AutoRX in my 4T65E-HD which suffers from the dreaded sticking pressure control solenoid, I'll let you know how it turns out.

I don't the changing the timing will help the transmission any, it would cause KR though.

-T

 

[Shaman]

What symptoms are you suffering from?

 

[Matt_S]

I know a lot of people, professional trans rebuilders included, that absolutely swear by Lubeguard Red. One rebuilder I know won't let a trans leave his shop without it. You might try a pan drop/filter change and add this to the new fluid.

As for myself, I've had good luck with M1, but that might be a little pricey if you're going to see the car soon.