Hello,
recently I bought this nice 300M from guy who was desperate because of
limp mode stilll going on. He replaced valve body, solenoid packs, remanufactured transmission, changed PCM and still nothing. The limp mode happens after about 15 mins of driving, mostly when you get over 45 mph for some time and then slowing down for junction.
Except code
P1776 there were also
P1790-FAULT IMMEDIATELY AFTER SHIFT
P0750-LR Solenoid Circuit
P0755-2/4 Solenoid Circuit

Do you think it is some electrical problem?

thanks!

 

I have new knowledge, when I cut off ABS, the transmission starts to behave differently, it gears to 2. gear when I am idling on brake or cant gear when I am moving on. But even when I plug again ABS it stays behaving like that until I leave it in piece for a while.

 

Hey,

I have the same problem same codes, did you find any fix for the problem, any help would be greatly appreciated.

thank you

 

still no luck, i spent 1000 euro for new pcm, clutches, harness check. I have another gearbox, i try to replace valve body and sol. pack from it one more, if it doesnt help i will replace whole transmission. Hope you will have more luck. Cheers

 

PLease let me know what happen as I am having the same problem and I don't want to replace the gearbox

 

Sad to say, but that may be your ONLY option.....

The reason This issue happens, is because your torque converter is full of junk, and all that debris is transferred to the cooler. Replacing the cooler and converter sounds like a plan, but all that junk has been transferred back and forth thru the transmission, and as a result, even after the fact, the system is contaminated.

 

But the transnission in my car is still like new. Do I still have a chance to have an easier fix other than a transmission replacement or rebuild? Thanks for replying

 

But the transnission oil in my car is still like new. Do I still have a chance to have an easier fix other than a transmission replacement or rebuild? Thanks for replying