Following a problem starting my car after the Poole Quay for my Car event a couple of weeks back I have been trying to find the cause of my problems.
Basically the engine was cranking fast but not starting. Eventually it started and idled without problems. I then pulled away only for the engine to die and again I had problems restarting but eventually it kicked into life. Since then I have not been able to start the car at all.
Car is an R300 (1.9 Scholar K-Series), with MBE ECU, Shurlock EP100 immobiliser (now removed), battery master switch, Brise starter motor, etc, etc
Fault finding carried out thus far:
Checked ECU fuse
Checked ECU plug is seated correctly, checked for damaged pins - none found
Checked fuel pump fuse
Checked fuel pump connector
Checked and by-passed the inertia cut-off switch
Checked/cleaned grey engine loom plug
Checked the battery master switch, seems to be OK
Checked battery is fully charged and holding charge (also tried using spare battery as booster)
Jump-started from another car (read in another thread)
Re-programmed immobiliser keys
Un-installed the immobiliser completely
Continuity checked from fuel pump socket to the grey engine loom plug
Other observations:
When the ignition is first switch on the fuel pump doesn't sound like it's priming
When I measure the voltage across the fuel pump connector and turn the ignition on the meter reads +12v and then falls to zero.
When cranking the engine the meter reads 12v at the fuel pump connector
The fuel pump runs if connected directly to the battery
The car will run with a direct connection to the fuel pump, it will also run if +12v is connected into the relevant side of the inertia cut-off switch
I've taken the cover of the MFRU and the relays seem to be operating correctly for starting.
I could power the fuel pump from a direct feed via a relay but this seems like a proper bodge job
What more can I try? Any pointers most appreciated…
Cheers - Andy