GoneAce Posted September 7, 2023 Share Posted September 7, 2023 2003 vtec, installed a FH020AA regulator and while letting it idle so I could ensure it was charging the fuel pump quit, I left it alone for awhile and came back a few hours later and the fuel pump worked again but only for a minute or two, it doesn’t sound weak when it did turn on but I check the plug at the pump and it’s reading 11-12v when i turn the key on, is this a faulty pump? Link to comment Share on other sites More sharing options...
Member Contributer Grum Posted September 7, 2023 Member Contributer Share Posted September 7, 2023 1. Make sure the Fuel Pump connector and terminals are clean and good. 2. Make sure the Fuel Pump Green Ground wire has solid continuity back to the battery Negative terminal. 3. Probe the Fuel Pump connector with your voltmeter then with Ignition to On operate the Kill Switch numerous times, make sure you read 12v and the pump primes for 2 to 3 secs every time the kill switch is set to run. Any loss of 12v may point to a Fuel Cut Relay issue etc. 4. At every Ignition Switch On does the Fi Light go out after 2 to 3 secs. 5. Have a Very close inspection of Main Fuse B 30amp located next to your Starter Relay. Check for any signs of overheating of the fuse, fuse holder and its wiring. This fuse powers your Fuel Pump and all the other EFI stuff. You could also unplug the Fuel Pump connector and Carefully run some test leads from the battery to the pump making sure you hear it run with every connection, if it at any stage it doesn't run then you have a faulty intermittent pump. Link to comment Share on other sites More sharing options...
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