Okay, so fuel pumps either work or they don't. So if you are developing any fuel pressure at all then it's not going to be the fuel pump. There are a couple of things that can be going on from the pump to the fuel rail and there can be a problem with the wiring going to the fuel pump, all can cause your vehicle's problem. So this is going to be a process of elimination, so please be patient. Let's start with the electrical. In the diagrams down below I have included the engine management wiring diagrams along with the fuel pump electrical connector locations and pinouts. So with a helper turning the ignition key to "RUN" have your Digital Multi-meter [DMM] in place and take a voltage reading at pin 4 of the fuel pump electrical connector. If you are not familiar with how to use a DMM, here is a link below explaining how to use one:
Please get back to us with the reading and we can go from there. Happy Holidays.
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Sunday, December 29th, 2019 AT 6:21 PM