You need fuel system wiring diagrams & the ability to test
basic electrical circuits
You can't guess or expect some to guess for you
SOURCE: 1987 ford Bronco II fuel gage doesn't work-reads empty all time
I need to know if the other gauges are accurate. There is a voltage regulator mounted on the back side of the dash that can go bad and often does, that will make the other gauges inaccurate also.
SOURCE: 1987 GMC sierra , no fuel pump power.
The inline fuel pump fuse on the passenger side firewall is good? Are you jumping it with 12 volts at the test lead or the fuse?
SOURCE: Won't start after installing new fuel pump. After
HAVE YOU TRIED CHECKING THE FUEL PUMP RELAY
SOURCE: 97 gmc pickup, 5.7 eng, fuel pump not operating,
What you need to do is check you fuel pressure. Go to a local auto parts store and buy a fuel injection pressure tester. The pressure fitting is on the top of the motor its a 3/8 ish sized metal line and has a screw on fitting like a tire valve does. This line comes up from the back of the motor to the right of the distributor and goes down into the intake. Make sure to have a rag handy to catch the fuel seepage. After you connect the pressure tester turn the key on and off three times and read the gage you should have atleast 58 pounds of pressure. If you have 56 pounds it won't run because the fuel injectors are a poppit valve style and need atleast 58 pounds of pressure to operate.
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