Not my car but trying to help a friend who can't use a computer or a scanner. He's the mechanical one and I have ended up doing the computery bit
He started with the problem last November and has been trying to run it to ground, to date he has,
changed or removed and inspected all flexible pipes in the intake system so no splits.
changed MAP, MAF, Crank and Cam sensors
changed fuel filter for reputable make (Bosch)
cleaned EGR valve and fitted/remove/refitted EGR blanking plate
checked the Cam sensor voltage (it's 12V not 5V)
bought OBD2 scanner (Gave it to me to use) and I've checked injector codes are correct. The codes are not the ones one Ford's plate but they are the same as the injector codes so the injectors have been change at some time.
The car drives well enough - plenty of power and the economy is still good and no smoking unless provoked. if the thottle is floored several times in a high-ish gear the coil light comes on and the engine usually cuts within a couple of seconds, but as usual with this sort of problem, restarts immediately
It always flags up 0252 fuel injection problem and 1121 throttle position sensor error.
Watching the scanner data for the throttle position there is no evidence that I can seen of a poor signal, but the fuel pressure demand is always about 20-25% greater than the measured pressure.
Has anyone any ideas as I am completely lost as what to suggest next.
Sorry for the rambling post