Under the drivers seat are three relays. Well, two relays and a steering module. The two relays are main ECU power and fuel pump. The steering module is red and is responsible for powering the fuel pump while starting and while running. It essentially switches which circuit powers the fuel pump.
Upon starting the contacts in the flapper will power the fuel pump until the ECU receives the rpm signal via the cut out switch, which then sends a power supply to the fuel pump via the steering module.
The fuel pump is not on a timer or pressure delay like newer systems. If the engine isn't being turned over or running, the pump doesn't run.
To me in your case it sounds like it is either getting too much fuel or not enough. If you haven't already, inspect the fuel pressure regulator and test the fuel pressure. For it to die at idle, but be ok with some revs up, it really sounds like a fuel issue where it is overfuelling.
What are the plugs like, colour? Smell? Are the vac lines all in good condition? Have you cleaned the earth's at the back of the LH head?
The other two problems probably aren't related. The volt gauge thing is either a loose connection or poor earth and the temp gauge thing could be the power converter in the dash cluster. My 89 does weird things sometimes, especially when the weather is warmer.
'15 Discovery 4 HSE- The family bus and the kids like it!
'89 RRC- My favorite of the bunch!
Ex '03 Commodore 'S' ute- 450hp of uncracked 5.7lt and 6 speed manual uteness - Still crying that its gone
Ex '06 GLXR Triton- *Gone and forgotten*
Bookmarks