P0190 P0191 please help!
After having to rebuild my cylinder head from a bent pair of valves, I finally got my MOT two weeks ago.
Yesterday, the car wouldn't start after endless cranking. I got the codes P0190 and P0191. These point to the fuel pressure sensor and regulator.
If I disconnect both, the car starts after two rounds of cranking 5 seconds. I reconnected the pressure sensor (blue plug) and that doesn't make a difference, it starts after two tries. BUT when I reconnect the regulator (black plug) it cranks forever but will not start. Disconnecting it again solves the problem.
Does this mean the regulator is at fault? Or something else? Is it safe to just leave it disconnected until I get a new one? I'm guessing the low pressure fuel pump will work extra hard in this time.
Where can I get one and what is the part number? Or can I test the resistance? Can it be fixed?
Any help would be much appreciated.