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Old 04-21-2012
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Help Changing Fuel Pump

So I've got a new fuel pump. I've talked to a number of people and they say you need to take the bed off to access it. I've got a torx wrench to do that. I also know I need to depressurize the system by trying to start the truck for 30 seconds with the switch disconnected. I have heard about the wiring harness that is for the tailights? Is there anything else I need to know from you people out there that have done this???
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Old 04-21-2012
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ive done it on a buddies s10 once, i think it might be easier to drop it from the bottom if its not too rusted.
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Old 04-21-2012
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Its easier to pull the bed as there just isn't enough room to disco the lines on the top of the tank.

Easiest method is to pop the inertia switch with the engine running and let it die. Also the cleanest, next would be pull the fuel pump fuse and do the same.
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Old 04-21-2012
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Yeah, to take the bed off, take off the bolts in the bed, the 3 small bolts around the filler neck where you put the gas in and unplug the wiring harness in the rear that goes to the taillights as well as take off the tailgate. It is not heavy, just awkward.

I used a hammer and wood block to unscrew that big round thing and when I was disconnecting the fuel lines, I broke one of the plastic clips. If this happens, you can resecure it with a zip-tie.

If you need any questions answered, send me a PM and I will help you as much as possible as I had to do this about 6 months ago. Alot of tips on here and I am so glad this site is here; this is where I learned about the zip-ties!
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Old 04-22-2012
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Thanks ya'll! Appreciate it. My battery was so low I had my buddy come over to give me a jump start so I could depressurize the fuel system. He then asked me do you know if it's getting pressure? I said I hadn't checked and he mentioned that on one of his jeeps they had a little check valve where you could see and if you opened it up gas would pour out and you would know the fuel pump was fine. I got to thinking and said well I can disconnect the line where the fuel filter is located on the tank side. So I did and he told me to turn it over. When I did gas blew out of there like a garden hose he said. It wasn't intermittent at all. I reconnected the line and it started. My buddy asked if I had ever changed the fuel injectors or anything. I said no although I've thought of doing one of those fuel system flushes need to find a reasonable one. Anyhow I decided to go to Autozone and do some other checking and found out my battery was bad. The truck seemed to be running stronger. I'm thinking there must have been something in my line that i dislodged? Anyhow I got some gas and run this extreme fuel treatment something or other from Wally World supposed to be 2x better than the rest. Well it seems to be doing something because the truck is running a lot better. So I was on the right track I think, but lucky to find the issue. I guess the fuel pump could still technically be going out. I think I'm going to do a fuel system flush first. Sorry about the long post but I thought it might be helpful to someone else.
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Old 04-22-2012
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Go ahead and change the fuel filter.
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Old 04-24-2012
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Yeah I already changed the fuel filter. Well I've since found out my problem. I went and had the fuel injectors cleaned and the guy checked my fuel pressure and said it was steady at around 50 I think. I don't know what it's supposed to be, but it was steady and wouldn't drift. He then proceeded to tell me that my truck was showing that it was misfiring in two cylinders. Then he said you better check your plugs and wires first. Well I know I changed them at tops 2 years ago. I got to searching for what people recommended for plugs and they said that you HAVE to run motorcraft plugs and nothing else! Well I knew when I changed them I had bought some fancy plug from Wally World. I changed 3 plugs and wires tonight before dark and with the fuel injectors cleaned this truck runs like it's new. Of course I still need to change the other 3 plugs out, but I know I found my problem.
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Old 04-25-2012
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Fuel pressure varies by year, new trucks are up near 60.
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