Ford Repair Questions? Ask a Mechanic for Answers ASAP
Hi there good morning to you and sorry for the delayed response up
My name is***** would be happy to assist you Today
Just to confirm the only part that has been fitted to try and resolve the issue is the pressure relief valve on the side of the fuel rail
kindest regards ***** *****
brian
Hi Rob good evening to you and sorry for the delayed response I have been away all day so do apologise
ok to resolve your hunting (erratic idle ) you need to have the PCM(Powertrain Control Module) updated to the latest level and the fuel injector pilot learn values relearnt
this can only be done using the ford IDS software
what happens is the injector base learnt values drift outside the Pre set parameters
and this is what causes your hunting basically erratic fuel pressure is the cause
If you need any further help or technical assistance going forward Rob
please let me know and I will do my upmost to assist you
If you are satisfied with my answer /advice thus far
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Kind regards ***** ***** and have a nice evening
positive feedback Is kindly appreciated
Kindest regards ***** *****
Brian
In rare cases this can cause the FPLV (Fuel Pressure Limiting Valve ) to fail if the fuel pressure goes to high(this is a safety feature of the engine management system)
The FPRV is located on the end of the fuel rail
in other cases if the pilot learn fails it can be due to an injector leaking off excessivly
But in my experience after the software has been updated and the injector Pilot learn completed the vehicles run ok
Hi Rob thanks
so it’s basically just lack of throttle response that is the issue
is there any smoke from exhaust
is there any warning lights on dash when this occurs
regards ***** *****
What is the registration number of your vehicle
Hi Rob good morning to you and sorry for the delay in responding
ok as mentioned with this fault you can experience hunting /low idle /low /poor throttle response
What we see happening is that the injectors drift outside the pre defunded parameters
what I would advise is the pcm is updated to the latest level
then
1, the fuel injector correction factors re-entered
2, the high pressure fuel pump learn procedure carried out
3, the fuel injector pilot learn procedure carried out using the ids software
then the fault reappraised
if you are still experiencing the throttle issue we must then look as a possible EGR valve concern or. a boost concern
But the above procedure is advised firstly
If you need any further help or technical assistance going forward