my ML350 Bluetec 2010
vin

4JGBB2FB6AA593877

I need the part number of fuel rail pressure control valve
cause I have codes PO 087 & PO 088
and the work shop technician says that the valve which been installed is the wrong one as in the attached photo



thanks

 

According to your vin# this is the part #.

 

thank you Sir for your kind reply
the part I need is the pressure control valve
not
the pressure sensor
as in the attached photo

thanks

 

Here you go.

 

Dear Sir
Thanks alot for your kind help , when I google this part no. it the part no. of the connector with 2 pins , the part no. of pressure control valve should be either
A 642 078 02 49
or
A 642 078 01 49
or another no. but same first 7 numbers
😶
waiting your kind urge
accept my greetings
thanks

 

You were the one that pointed to that part.

As you can see in the diagram there is no separate part and it seems it is part of the fuel distributor.

 

thanks alot for you kindness
as the attached diagram and photo

thanks

 

M/B does not show that part # and you said earlier that you were told it was the wrong part.

 

the engine turned off after 80 km/h several times

the technician said because of the fuel rail pressure control valve
mine was with part no. A 642 078 02 49
I didn't find the same no.
I found A 642 078 01 49
when install it the engine turned off at 40 km/h

so they clean the old valve with some sepry cleaned and the engine work fine

I went to Bosch dealer in Irbil - Iraq he said that the installed part is not the original part no. for this engine but he couldn't give me the right P. No.

😶

 

Is that bottom fuel rail connected to the high pressure pump?

 

Yes sir

 

This problem is all caused by M/B. Instead of showing the part# at the end of the left fuel rail, they included it at the high pressure pump.

According to your vin# this is the part you need.

 

Dear Sir
A very good day to you

I google this p.no. found it's called fuel pressure regulator as pi pointed in yellow in the attached photo , so I understood that I have to change this part A 6420740284 not the pressure control valve A 6420780249
is this right ??

Thanks and have great day
🙂

 

Today I removed this regulator found one of its side hole Clogged with something like mud
cleaned with sepry cleaner
hope this will fix the issue

thanks

 

Don't you see that the part # I pointed to is called a VALVE?

 

Yes Sir
it is
you see I became confused
here in Iraq there are no qualified workshop to deal with modern diagonal techniques
so I'm all ways get the right advise from you

thanks and have great week end 😊