[BTSABMW]

My 90 300E tranmission slips when I accelerate hard, fluid level is fine, can they be adjusted?

 

[BZNHALFDZN]

I have gotten lucky by adjusting the modulator on the side of the transmission.

 

[BTSABMW]

Thanks, how is that done?

 

[BZNHALFDZN]

To do it properly the car needs to be on a lift with a gauge on the transmission while in drive doing around 30 mph.Its been a while so forgive me if I am off a bit.Then you can adjust the pressure if it is off which I cant remember the specs but I have done it on the ground too.The modulator is on the drivers side of the trans with a vacuum hose going to it,you pop off the black plastic dust cap and carefully pull out the metal key enough to adjust the pressure up or down which I believe clockwise is more pressure.Just remember where you started from before you start adjusting.Also before you start do a general check of the vacuum hose connection between the motor and the trans.Hope this helps.

 

[BTSABMW]

Thanks! That fixed the slipping, It still takes a couple miles to shift in to the next gear when she is cold.
Thanks again ILOVE this site! []

 

[jhodg5ck]

As an aside, if your trans was slipping that Eats up your ATF right quick. I'd Srongly recomend you do a complete fluid change (torque converter etc) and filter. It's CHEAP insurance. Just be sure to use a quality name brand ATF.

Jonathan