Help again! Fuel flow issue

[Hot Air Beast]

After a good outing and a half hour drive home i parked the car. It was running fine. It sat for a day and I tried to start it a couple of hours ago. NO GO. I could not hear the fuel pump so i checked for power to the fuel pump - NONE present. I checked the fuse -NOT BURNT. I checked the schrader valve at the rail -NO PRESSURE.

I am a low tech back yard mechanic but i can find where things are and look for simple solutions like broken wires, bad grounds, cracked vacuum lines and the like. I have no tools down here in Florida. Looks like I will need to be towed to a garage. Not much luck with the last one down here.

Any suggestions as to what i could check before getting towed to a GM shop??

 

[Hot Air Beast]

One more thing - fuel pump, fuel relay, filter, and fuel pressure regulator were all replace last summer/fall.

 

[novaderrik]

do you have power to the fuel pump relay?
can you run the fuel pump by jumping the wire at the oil pressure sender?
do you have a hotwire kit, and if so, is that relay working?

 

[SAMBALLS1]

check all power leads... relays..last resort try different ecm. has had it happen to me.

 

[Hot Air Beast]

Thanks for the replies guys. I do have power to the relay and appears no power out of it. Test lead probe will cause relay to click. Not sure what you mean by jumpering the wire at the oil pressure sender. I do not have a hot wire kit nor a spare ECM. Spare ECMs are back in Canada. Relay is only $16 so I will swap with a new one as a first step.

 

[Hot Air Beast]

OK - so new fuel relay did not solve problem - shorted #s 2 and 5 still no power to fuel pump (noted AC clutch kicked in and i have no idea why). Proceeded to start at back end to eliminate faults. Run a power wire from batt to fuel pump wire - fuel pump primed no problem and car started - only ran a few seconds as fuel was used up.
Since the relay is designed to only run the pump for 2 seconds my thinking is that the car should have continued running even if the wiring harness is not connected to the relay OR with 2 and 5 shorted the car should run. Checked fuse and installed new even though old one still looked OK.

What to try next??

 

[Hot Air Beast]

OK, so I direct jumped the fuel pump and drove it in to an electronics shop here in Bonita Springs Fla. The tech there is sure it is broken wire between the relay and the oil pressure switch or it is a bad relay. The relay that Advance Auto says is the fuel relay is really, according to the tech, an AC relay and is in the middle of the support bracket on the passenger side fender. I tend to agree with him since when I shorted each lead on the wiring harness for the relay in that position, one of the pins triggered the clutch on the a/c compressor.

So, does anyone have a picture or diagram of the engine compartment showing the true location of the fuel relay???