Car still not fixed help.

[Colinchaser]

I posted a while back but the car is still not fixed. Here's an update hoping you might identify something my daughters . Peugeot RCZ 1.6 2012. Breakdown, Car plugs and coils went after being re newed 11 months earlier, replaced them didn't fix the car the Lambada sensors replaced, it ran for a day then broke down again, over fuelling was identified came up with multiple error codes, so had the ECU tested Passed all tests. Throttle body changed after a different mechanic diagnosed, made no difference. Auto electrician checked all wiring, all Ok. High Pressure fuel pump changed, made no difference, new Bosche Fuel injectors fitted, now it's under fuelling. My Mechanic who has a garage is at a loss. I think he was checking out main air intake but I don't think that's worked either Any suggestions would be appreciated.

 

[Pedro]

Over & Under fueling can be associated with issues of the high pressure/low pressure fuel pumps
P0087 Fuel rail/system pressure too low are you sure they changed the HPF Pump?
The low pressure pump is in the fuel tank
Has the High/Low fuel trims been checked from a scanner reading?

 

[Colinchaser]

Over & Under fueling can be associated with issues of the high pressure/low pressure fuel pumps
P0087 Fuel rail/system pressure too low are you sure they changed the HPF Pump?
The low pressure pump is in the fuel tank
Has the High/Low fuel trims been checked from a scanner reading?

Yes the Fuel Pump was change for a new after Market replacement, it's since been changed back to the original as it's not proved to be the problem. I have forwarded this info on to the mechanic . It's weird that all along it's been over fuelling until now that the injectors have been changed it's now under fuelling . I have also mentioned to him about injectors being coded it might be something along those lines . Thank you for your suggestions.

 

[Percival]

Same mechanic/garage for all the work? If that is the case they have failed to solve the issue and cost you ££s and the problem is still not fixed. First thing I would be doing is finding a garage/independent that actually knows what they are doing and has the expertise to work on the car.

 

[Colinchaser]

Same mechanic/garage for all the work? If that is the case they have failed to solve the issue and cost you ££s and the problem is still not fixed. First thing I would be doing is finding a garage/independent that actually knows what they are doing and has the expertise to work on the car.

Yes , The mechanic is a friend but it's simply got him beat so if it's not resolved iminently it will indeed have to be moved to another garage.