Hello everyone, i've got a little problem going on my Accord.
Whenever i switch between Drive and Reverse, the car slams, like a strong push forward.

The car only has 80k miles on it, had it from brand new. Has been to every single one of the dealership maintenance schedules.
Although, reading through some of the work done on the car, i read the dealership used "ATF Plus 4" and not the Honda specific ATF.

Recently i made a transmission oil change with authentic Honda ATF, some 500 miles ago, along with cleaning the 2 solenoid valves (Shift solenoid and lock up solenoid). The slam went away, but returned after 50 or so miles.

The car shifts a bit rough between 1st and 2nd gear, but from 2nd to 3rd to 4th, its barely noticeable.

What could it be, im really lost. Thanks!

 

Check the mounts, front and rear.

 

Forgot to mention, the slamming only happens when the engine is cold

 

Not good news for the transmission.... I'd put money that the bearing guides failing

 

Check the mounts as a start....Thanks

 

All mounts are in good shape, engine and transmission.
The only two posible explanations that come to my mind are, either its the ATF 4+ thats causing the problems (already did a drain and refill once with aunthentic Honda ATF) or the transmission is really dying.

Any ideas?

 

Adjustment of the transmission throttle cable can greatly affect shift quality.

good luck

 

Would that TV Cable affect the slamming when D<->R ?

 

No, I don't think trans throttle will affect idle shift response. It will affect 1-2 shift however.

Have you carefully checked rear motor mount?

good luck

 

Yes, my mechanic checked them on 2 different occasions, and said they were ok.