wont rev past 4500 rpm

[dellbagz666]

ive just purchased a merc E200 on an M plate but the little suckers rev limiter cuts in at 4500 rpm. any ideas?:evil:

 

[Blobcat]

Hi & Welcome,

In P or D?

 

[dellbagz666]

???

Hi And Thankyou. Im Completly New To Mercedes. Sorry I Dont Understand

 

[Blobcat]

Will it only rev to 4,500 in Park, Neutral or Drive. As there is a rev limiter in Park & Neutral. I am of course assuming you have an automatic.

 

[dellbagz666]

Oh Sorry. In Both

 

[dellbagz666]

And Its A Manual

 

[mlc]

so just to clarify. start off in 1st, drive off and stay in 1st, and it does say 20 mph foot on the floor and stuck at 4500 rpm?

 

[dellbagz666]

it just wont go past 4500 rpm in nuetral, 1st, 2nd and so on.

 

[dellbagz666]

i thought at 1st it was a limiter that only kicks in nuetral but when i drove it home the limiter kicked in at 4500 rpm in every gear. ive been advised it may be the air flow sensor?

 

[Blobcat]

This bit then; http://www.detali.ru/cat/oem_mb2.as...+++717.413&CT=M&cat=19K&SID=07&SGR=040&SGN=01
MAS normally limits to around 3K revs, however it is always worth a clean. Pls see this thread; http://forums.mercedesclub.org.uk/showthread.php?t=18298

 

[roofless]

hi i had the same fault in the past with my 300te with no joy till on the way home from work i had a burning smell then it stoped on me .the prob was the fuel pump relay so i did a temp repair to make the pump run to get home on the way it drove without fault so i fitted a new relay and the prob was solved for good

 

[bigasotonuk]

Hi,
Read something about this on another forum re; w202s may still apply to your car depending on injection system fitted.
They had very similar symptons as you and it proved to be the main Engine ECU.
Lets hope i,m wrong, bit expensive to replace there are places that will repair yours a bit cheaper than buying a new one.