Hello Froggers,
I've got a May 2007 built 207GTI with an unhappy engine. Problems have been intermittent for some months, usually involving very rough running with very low power and a depollution fault warning a few minutes after a cold start. Most of the time these problems have resolved with a quick reboot; ignition off, on again, and away we go (so I concluded that the dreaded cam-timing error was not to blame)....sometimes I don't even have to stop, just keep rolling in neutral and turn it off and back on again.
In the past week things have gotten much less happy, with extremely rough running under acceleration loads and generally reduced power. It will actually cruise at 80 or 100kmh, but getting there must be done very gently indeed.
I had it checked on a Peugeot Planet diagnostic rig today by Canberra's well regarded Bill McNamee, and it came back with a swag of historical errors, none of which looked like an obvious cause of the problem. We cleared the faults went around the block a few times, and it ran rough-as-guts under acceleration, but did not report a new fault.
We noticed what appear to be some low pressures in the fuel system. There were two values reported, one was called (I think) the Fuel System Reference Pressure (or something like that), and it was bouncing around 50bar, but dropped quite low (15-20bar) when under acceleration. A second reported value was called (I think) the Fuel Rail Pressure and it was pretty steady around 8bar. There did also seem to be a bit of a rough sound from the fuel pump under the back seats.
Has anyone encountered anything like this before? I have found a few posts on other forums mentioning 207 GTI fuel pump failures. Does anyone know if this is how they present? Are there sensors in the fuel delivery system which might also be playing up? I would like to try and avoid the replace-and-see method of problem resolution, as I am on a student budget, so any brilliant diagnostic tips would be very welcome.
Cheers,
Sandman
I've got a May 2007 built 207GTI with an unhappy engine. Problems have been intermittent for some months, usually involving very rough running with very low power and a depollution fault warning a few minutes after a cold start. Most of the time these problems have resolved with a quick reboot; ignition off, on again, and away we go (so I concluded that the dreaded cam-timing error was not to blame)....sometimes I don't even have to stop, just keep rolling in neutral and turn it off and back on again.
In the past week things have gotten much less happy, with extremely rough running under acceleration loads and generally reduced power. It will actually cruise at 80 or 100kmh, but getting there must be done very gently indeed.
I had it checked on a Peugeot Planet diagnostic rig today by Canberra's well regarded Bill McNamee, and it came back with a swag of historical errors, none of which looked like an obvious cause of the problem. We cleared the faults went around the block a few times, and it ran rough-as-guts under acceleration, but did not report a new fault.
We noticed what appear to be some low pressures in the fuel system. There were two values reported, one was called (I think) the Fuel System Reference Pressure (or something like that), and it was bouncing around 50bar, but dropped quite low (15-20bar) when under acceleration. A second reported value was called (I think) the Fuel Rail Pressure and it was pretty steady around 8bar. There did also seem to be a bit of a rough sound from the fuel pump under the back seats.
Has anyone encountered anything like this before? I have found a few posts on other forums mentioning 207 GTI fuel pump failures. Does anyone know if this is how they present? Are there sensors in the fuel delivery system which might also be playing up? I would like to try and avoid the replace-and-see method of problem resolution, as I am on a student budget, so any brilliant diagnostic tips would be very welcome.
Cheers,
Sandman
