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thanks,joseywells
Nelson
I have an '02 Silverado LS 4.3L Engine Code "W" two days ago it just died in the middle of rush-hour traffic. When I went to the rescue, I noticed that when trying to start it up, it would crank but sounded like fuel starvation, so my first thought was that I needed to replace the fuel pump or at the very least the in-line fuel filter. Well, I replaced the fuel pump, which by the way is very expensive ($396 BOSH) and the pig-tail connector included with it and start the truck, and it ran just fine, of course I tested before bolting the bed back in place. Then I remembered that I had already purchased the in-line fuel filter (AC Delco $25) shut it off, disconnected the battery again and replaced the filter, when I tried to show it the finished work to my wife, the damned truck didn't start, I stayed late night trying to figure out what was the problem and not even retracing my steps can find what went wrong. Now it cranks up like the firsts day and it sound like no gas is reaching the engine. I disconnected the new fuel filter and is dry. I disconnected the lines attached to the pump itself and there is gas there, it surges out. Any suggestions before I turn to a professional? And I don't know if I can afford that option. Also, where is the fuel pressure regulator located? Just in case I need to mess with it.
Thanks in advance! :confuse:
SO, how the heck to I fix it? Preferably cheaply.
Also...check engine light is on and has been for awhile. OBD codes say it's the oxygen sensor (if I recall correctly)...could this all be related?
And, if anyone has some insight into my stuck speedometer that would be great to!
HELP
Crawl under and check the fuel tank straps to make sure they are tight and in good condition. (Tank could have moved and pinched the fill hose.)Don't know about an anti-spill device, so I can't help there.
The oxygen sensor(s) are part of a different system so I don't see a connection there. However, you may want to have the codes scanned again, if this anti-spill device is controlled electronically at all it may well have set a code also. Note: Test those sensors before replacing it/them. They are expensive.
Lastly, speedometer is controlled by a cable to the transmission. Look for it coming from the firewall behind the dash and make sure it is connected on both ends!
I narrowed the problem down a bit. I pulled the relay and turned the key on. I measured the voltage at the coil relay pins and measured 12 volts, but I still get 0 volts to the fuel pump connector. I turned the key off and measured 0 volts which tells me that the PCM is working. I know the relay is good because I switched the fuel pump relay with the horn and thy're the same.
I can jumper the fuel pump relay contact pins for the relay and measure 12 volts when I connect my voltmeter to the power in at the fuel pump and then frame. When I connect to the power pin and the ground pin I measure about 6 volts.
I checked the continuity of the ground pin to the frame and show no continuity. I believe I have a bad ground but that still doesn't explain why the relay won't send voltage to the fuel pump when the key is turned on. Am I missing something? Any ideas would surely be appreciated. Thanks.
jeremiah
I have a 2000 chevy silverado that I've replaced the fuel pump in. The problem is I have no power to the pump. I've checked the relays, fuses, replace fuel filter. I even exchanged the pump for a 2nd one because I thought it may have been defective. I'm out of ideas so please share yours. Thanks. :confuse:
It cost me the price of a new fuel pump to learn this lesson - make darn sure there is power at the fuel pump before changing it. Oh well, at least I have a good used fuel pump on the shelf!
Been Sitting For About An Hour.. And It Wouldnt
Start... Its Turning Over Fine And It Has Spark. I Just Replaced The Fuel Filter About A Month Ago, So Im Thinking Its The Fuel Pump Possibly... So My Question Is Before I Start Tearing [non-permissible content removed]
Apart Does Anyone Have Any Other Ideas? And Where Exactly Is The Fuel Pump On A 97 Gmc Sierra 5.7 Thanks
Your fuel pump is located inside your fuel tank. Fuel tank removal is required in order to replace it.
My positive battery cable shorted out to the frame in a slow fashion and left lots of corrosion around the frame area where this happened. I replaced the positive battery cable and the fusible link wire that went along with the set-up. Of course I broke the connector on the starter and had to get a reman, and a new battery as well as the positive connector was corroded. After all of this work, the truck will not start. It has spark, and when I put some gas into the EFI carburetor, it will momentarily fire-up, then die. The fuel pump fuse is good, but I suspect the EFI system is not delivering fuel, and I noticed some fusible links on some wires next to the fuse-block in the engine compartment. What is my next step and what probably happened when the positive battery cabel shorted out?
Thanks in advance?
You can email me at mattspicoli@hotmail.com
Hopefully we get this sorted out this weekend
hope that helps.
R
I have had the fp problem,It was the sending unit.Replace the whole unit.
I have the abs /brake warning lite It comes and goes .
told that it could be a ground or the relay in the brake mod still have not
fixed that problem.For last fews wks I have had a starting problem.It will start right up at times, them it will crank for ever then it will start.It has stalled Twice since the problem appeared. It is at the dealership they have not found the problem.
They tried a new pcm but that was not it.They put the old pcm back on.
They have replace the + cable still no luck. If anyone out there has any ideas
I could use the help. Indpls In
It was the coil and the coil wire. It was the moisture and condisation .
They cleaned the crank sensor. Changed the coil and wire.
The problem went away inside the building.reappeared in the mornings outside the building.
They had to call GMC Tech support.
So for all of you who are have the same problem .
Check the coil and wire.
I found out you have to use all delco parts .
No after market. It cost me $100 to find this out. Plus the new parts . I also use seafoam fuel treatment. You can get it at any auto parts. It is good for the fuel system and carbon build up.
The problem with my Trk was the coil and wire.