Having the usual Mondeo TDCI 2.0 issues. Was fine, then the coil light started flashing, went into limp, had it on a diagnostic it said "blockage between fuel filter fuel pump" so changed to fuel filter under advice. Diagnostics did a injector and pump pressure test both seemed fine all well within their parameters. But the exact same fault is there. Don't want to change the injectors to find out its the pump vice versa,is there any way I can rule one or the other out? Or maybe the IMV? Or lift pump from the tank?

 

When does the problem occur? Under load? Is it ok when you restart it?

 

Hi. Thanks for replying. Right. When its cold its fine I can flog it and it goes like stink. When the temps up if I wind up the turbo it goes into limp with the flashing coil light and also if I climb a hill and I guess that's under load. Changed every filter. Swapped the cam sensor for the grey one. Cleaned the vacuum egr,

 

No problem mate, I would say in that case that it would be more of a pump problem than anything, I've worked on transits for the last 12 years which have the same engine, the fuel rail pressure has to be within a certain tolerance, I think it's 50 bar either way, or it will go into limp mode and put the light on, but then be ok when you restart it. Ideally you could do with monitoring the fuel rail pressure under load to see what's happening.

Hope that helps?

Karl

 

Yeah. Its a start. Thank you. It idles seems to roughly, don't know if that's a sign. How would I be able to monitor the rail pressure? Oh and yeah. On restart its ok till the turbo comes in, Cheers once again.

 

I had this on my old 2.0l TDCi, i changed the fuel filter, cam sensor egr etc, I took it into a Ford main dealer as i knew someone that worked there but even with there proper Ford Diagnostics SDD, they couldn't tell me for sure whether it was the injectors or the pump. I didn't mind doing one or the other but not one then it turns out to be the other

I had the injectors out, had them leak back checked, came back ok so i had them cleaned and the fault moved from being ok untill the glo plug light came on to being flat all the time and some black smoke under acceleration!
I got so fed up with it in the end, I sold it as spares or repair! if i could've been sure what the fault was, i would have sorted it!

 

Nightmare isn't it. Only had the car 2 months. I now know why I got it so cheap lol. I'll persevere with it. Got to be a definitive test out there without stripping it down. (I hope). Cheers.

 

You'd need something like IDS, the proper Ford diagnostic tool to monitor the fuel pressure on datalogger mate, which unfortunately would mean booking it in somewhere. As for the injectors, you can do what's called a leak off test which would give a good indication as to how each injector is working, but again you'd need to book it in somwhere for that. Sounds a ball ache, but probably cheaper in the long run, rather than guessing at things and spending money for no reason if that makes sense?

Karl

 

Thanks Karl_3dr. I'll be making a few phone calls next week. There is a Delphi diesel place fairly local. Just been out in it now. 120 mile round trip and I drove steady and it ran fine. Floored it on my road home and cut out completely. At least I know I can drive it. Just hope the pump doesn't just pack in. Hear that's as good as terminal. Cheers.