So I've fitted a new fuel filter as well as taking advantage of fitting an official EGR restrictor gasket and a new gasket on the intake to the EGR.
MAF connected, drove like ****, took MAF off, drives nicely.Three times on and off and I'm now convinced that my MAF needs to be replaced. Awaiting payday till I can get a new MAF. Probably another placebo, but the car picks up much better with the restrictor even though I'm questioning that as seen below.
> Post DPF clog rate, Air temperatures, Fuel pressures etc.
> Your injectors don't seem to have suffered heavy pyrolysis, so I wouldn't spend the money replacing them. Once you find the route cause, get them tested for spray pattern and conditioned (Doesn't cost much)
> Disconnect your MAP, next to the swirl flaps / fuel rail.. It's easy to find, just unclip and pull.. Then take the car out for a drive..
> Disconnect MAF sensor, bottom left hand side of the engine then take it for a drive.
> Look to make sure swirl flaps are moving correctly, look for snaps at the motor and get someone to rev it for you whilst under the bonnet.
> As others say, blank off the EGR a plate off e-bay cost's a couple of quid.
DPF Clog rate is Normal (Think it was saying 60%).Still need to get fuel pressure. Can't get air temp at the moment due to MAF being disconnected. MAP sensor was reporting
Tested the injector correction values again with it at temp. As you'll see, they seem to be within range at idle, even when it reaches that magic 79.96 degrees C where the rpm starts bouncing.. And again, they are within range at 2000rpm... It seems like my injectors are behaving themselves (Fuel filter?) I guess injectors 1 and 5 aren't faulty.
Can I disconnect the MAP and drive the car without it going into limp home?
I'll have to check swirl valves tomorrow...
EGR should still work, and my thoughts on it opening/ closing rapidly are if it is sticky, will try and overcompensate then will move, and have to move back.
Though suggest you get the MAF sorted first, then other stuff should hopefully make more sense.
Even though MAF is disconnected should ECU Scan report that the EGR is opening and closing? From testing tonight, my EGR seems to be stuck 3.998% opening and EGR control is Off. This doesn't change whether at idle or with throttle.
With the MAF disconnected where are the default values taken from? Are they taken from entries saved to the ECU when it was created? Or are they taken from the last known values reported when the MAF was connected?