faulty air mass meter making car go into limp mode?

[alf1956]

I have had my Merc Clk 270 cdi 2005 reg at my friends garage for various jobs to be done & the car ha started to stick in gear, ie it wont change up or down & the fastest you can go is around 35mph as its reving at 3500 which sounds horrendous! It will go into reverse as well. I am torn between it being the conductor plate or the air mass meter or the gearbox conductor plate, any views on this please?

 

[LostKiwi]

Get codes read. Only way to be sure.

 

[barnaclebill15]

Like LK said, need to get on STAR to read the codes, I had this on my clk220 and it was the conductor plate but no limp mode it just would not change gear but go forward in low gear and reverse. Unfortunately my indie had just gone on holiday for two weeks.

 

[alexanderfoti]

Get the codes read, rather than throwing parts at it.

However, limp mode wont keep the car stuck in gear, unless its a speed sensor fault (wheel speed etc).

 

[alf1956]

I think that people are right in suggesting that I have the car on star computer to diagnose the fault, I am in Sheffield does anybody know anybody who has a star computer that is in my locality ?