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Hard start, fuel pressure questions
The problem got worse and I ran my battery a little low trying to start it a few weeks ago. I put the battery on the charger today and went to get a new fuel pump. A few hours later the battery was fully charged and I tried to start it, but no dice. I didn't even hear the old fuel pump running...- DanielP
- Post #6
- Forum: Engine & Drivetrain
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Hard start, fuel pressure questions
This is the page that says I need 50+ PSI while cranking to start: http://troubleshootmyvehicle.com/gm/4.3L-5.0L-5.7L/how-to-test-the-fuel-pump-1 ... I just don't know if this author is stating this as a spec from GM, from experience, or if he's just making things up. He does sound really...- DanielP
- Post #5
- Forum: Engine & Drivetrain
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Hard start, fuel pressure questions
That's my video by the way, which is why I didn't try to describe the hard start in my reply.- DanielP
- Post #4
- Forum: Engine & Drivetrain
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Hard start, fuel pressure questions
It usually takes a little longer than this the first time it's started. Skip to 00:14- DanielP
- Post #3
- Forum: Engine & Drivetrain
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Hard start, fuel pressure questions
My 1996 Tahoe with 5.7L Vortec is hard to start. The fuel pressure when I turn key on but do not crank is 60 psi. When I start cranking the engine, the fuel pressure bounces around between 48 & 52 psi. When the needle on the gauge spends more time past 50 psi, it starts. It idles at 50-51...- DanielP
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- Replies: 5
- Forum: Engine & Drivetrain
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Remove & Replace Fuel Pump???
What did you use to cut the access hole? Edit: NM, I see you already said what you did.- DanielP
- Post #11
- Forum: Engine & Drivetrain
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Oxygen sensor harness wiring
I think it's safe to say that the wrong O2 sensor is plugged into the existing pigtail based on the p0140 code. Unless told otherwise, I'm going to wire up the new pigtail according to the diagram in my original post because the connector looks the same and the wires in the harness that are...- DanielP
- Post #6
- Forum: Engine & Drivetrain
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Oxygen sensor harness wiring
Downstream sensor bank 1, I get p0140 code on my diablosport trinity. It's dual exhaust and it is passenger side. I tried finding OEM pigtail picture but never found one. ---------- Post added at 05:42 AM ---------- Previous post was at 05:15 AM ---------- I think bank 1 is supposed to be...- DanielP
- Post #4
- Forum: Engine & Drivetrain
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Oxygen sensor harness wiring
I'm now the 5th owner of a 1996 2DR Tahoe that I used to be the 2nd owner of. When I was under it the other day I saw an O2 sensor was unplugged, and I found what I think is the harness that goes to it, but the connector is cut off. I've ordered this connector but it is generic and not color...- DanielP
- Thread
- Replies: 5
- Forum: Engine & Drivetrain
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95 GMC Yukon No Start/No Spark
I used to own a 1993 truck with a 5.7L and had issues similar to yours. My problem was that the air filter cover would rub on the wires going to the coil which would cause an open short on one of the pigtail wires. I had to replace the same pigtail twice in only a few years. If it won't...- DanielP
- Post #22
- Forum: Engine & Drivetrain
