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If there is no fuel pump prime when you turn the key to ON, when crank and cam sensors are not involved, then either the fuel pump relay isn't closing or the fuel pump is dead. The latter is more likely if it's original.
Thank you Bob. Woldn't it as least fire with the starting fliud even if the pump was dead?Bob Lincoln said:If there is no fuel pump prime when you turn the key to ON, when crank and cam sensors are not involved, then either the fuel pump relay isn't closing or the fuel pump is dead. The latter is more likely if it's original.
If you can jump the "duty" side of the fuel pump relay, the pump should run and if it doesn't, you might as well verify that power is at the connector. With power and the pump not running, you can assume a bad pump.Ran fine. Parked for 3 days. Went out to start it and it turns over but no start. If I spray with starting fliud, there's a little bit of firing, like 1 cylinder almost trying, poorly, but it's really breif then it dies qiuckly, nothing like a normal short run on starting fliud.
Switched Relays around
Checked all fuses with meter to be sure.
I don't hear [background=transparent]fuel[/size][/background]![]()
pump prime. No fuel pressure at rail. No voltage to the pump with key on.
No codes.
Replaced Crank Sensor and cam sensor
5v to throttle body, 8v to camshaft sensor plugs
Jumped the duty side of the ASD relay and nothing happened
I have 12v at the relay socket for the asd and TCM.
unplugged battery to clear but no change
Any help greatly appreciatted.
Double check that there is not a blown fuse to the fuel pump relay socket (I know you said you checked). You should have power on at least 1 of the sockets in the fuel pump relay receptical. Check it with the key in the run position. It sounds like the pump is OK, but power is not being passed through the relay from the source side to the load side. Apparently there is no 12 V at the source side. You could also try bypassing the ASD relay before checking voltages on the fuel pump relay since they work together. Since your engine will run for a couple of seconds, you can probably rule out the crank and cam sensors as Bob says.I jumped the pump at the conector under the rear seat with a battery charger and the pump ran fine. I disconected pump from the batt charger and the car started and ran for a few seconds with the little bit of pressure the pump built up from testing it. (did it twice)
There is no voltage at the fuel pump relay, so I can not jump it there.
I tried using another key in case it was the security.
Does a bad crank sensor shut off fuel and spark? I replaced it, but maybe I got a bad new one?
My interpretation of all this is that you have continuity from the load side of the relay to the fuel pump connector/socket. If I understand correctly, you bypassed the the fuel pump relay (providing power to the pump connector) and the pump doesn't come on. We know the pump works because you wired it to 12 volts directly. Therefore the only thing left is a bad return (or ground) from the pump connector. There may be an inline connector in the harness with a bad connection, or a broken ground wire some place (even at the pump connector). Inspect for any dirty, discolored, or burnt contacts.alien_bug said:I have voltage at the source side on the fuel pump relay. Same with the ASD. I have voltage at the fuse for the fuel pump. I tried jumping fuel relay and no pump. Tried jumping fuse too, no pump. I'm assuming source means power supply and load side means to pump side.
I ran 12v from the battery charger from the plug under the rear seat with + hooked to green and - hooked to black and it made it all the way up to the relay #87 socket.
Gotta take a break with working on it Wednesday. I crushed my neck a couple weeks ago and all this crawling around the car has made it a bit worse.
Any ideas on the fix, please advise.
Many Thanks,