hi all I bought a 2005 55reg focus st3 last week, and within a day the engine management light came on, I hade a diagnostics done 2 faults came up, first code was p0087, I think the second code he give was wrong, it was p2718, think it was ment to be p2178, he cleared the codes but light came back on nearly stairght away, I also think it went into limp mode as the was very little boost, I took the kam fuse out for half hour and the light went out and was boosting ok, drove 10 miles today light came back on, my m8 diagnose it again tonite and 1 fault code come up p0087 the car also felt lumpy today when idling, has any1 any advice what to change or check first?, fuel filter if it has 1 ? Petrol pump/relay? Pressure pump sensor ?, I'm totally skink after buying it and don't want to change any parts that don't need changing, if any 1 has any advice what to do or try first I'd really apreatate it, thanks in advanced.

 

What are the fault codes then, did he tell u ?

 

http://wiki.ross-tech.com/wiki/index...1/P0087/000135 some info here as a start

 

Found this answer through Google, hope it helps:

P0087 is fuel rail pressure is too low
P2178 is system too rich off idle
P2127 is possible issue with the powertrain control module

So I'd 1st replace the fuel filter if you haven't already and also check over the electrical connections to the fuel pump , also consider replacing the fuel pump relay and check that its fuse isn't cracked or corroded

If this checks out OK then use a mechanical pressure gauge to measure the actual fuel pressure and confirm that it is low or not

let me know what you find

 

Hi m8 the fault code now is p0087 thanks,

 

Hi m8 thanks for reply, I read that on Google myself m8, it says change fuel filter, is there a fuel filter fitted to my car ? Thanks again,

 

hi again all, the fault code I've got now is p0087, I've searched Google and its saying change the fuel filter, but I'm not sure a 55reg focus st has 1 ??, could it be the fuel pressure sensor ? Any advice would be great, thanks again

 

You are right, they don't have a fuel filter! Certainly could be the fuel pressure regulator or the pump itself.

 

[QUOTE=RichieST;6284461]You are right, they don't have a fuel filter! Certainly could be the fuel pressure regulator or the pump itself.[/QUOTE

Hi m8 thanks for reply, how would I check witch 1 it is ? Wots it most likely 2b the fuel pressure sensor ? Or the pump its self ? Or something else? Thanks again.

 

I know nothing about the ST but that suprises me, do they have an in tank filter that you never have to change ???

Its things like this that puts me off a modern car , to many bloody sensors. Rs turbo all day everyday for ease I say . but im guessin its about reliability

 

there is no fuel filter on any mk2 focus, stupid really! I guess there is some sort of gauze in the pump itself, not too sure what would happen if it blocks!

 

I know............................... BANG !!!!!!!

 

has any1 any ideas? The mil light is back on and code is p0087, I've search Google and it saying change the fuel filter but there ain't 1, I'm worried ill do damage driving it with the mil light on, is there anyway I can check if its the pump or sensor or something else ?? Thanks again every1.