Please help with my fuel pump problem! - Ranger-Forums - The Ultimate Ford Ranger Resource


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Old 02-13-2008
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Please help with my fuel pump problem!

Hi guys, site looks great!

This is my first post here and I DID do a search first but could'nt really find anything so I hope this is in the right spot.

About 2 months ago my old fuel pump went out so I bought a new pump (not the whole assembly) at AutoZone. Changed it out and all seemed well except that when I got to a 1/4 tank of gas or less the truck would stall when going down hills or stopping to quickly from like 50-60mph. This leads me to believe that it's related to the pump as the problem WAS NOT there before and it DOES NOT happen when I'm near 1/2 tank or above. It's like when the tank gets lower, the fuel pump cannot retrieve the gas correctly you know? I thought I would change my fuel filter that's located on the framerail since that had'nt been done in a while and no luck there either.

During the initial pump change the old pump had factory clamps around a rubber line that connected the pump to the hard line. I had to cut those clamps and use hose clamps that came with the new pump. I noticed that the original rubber hose was slightly curved and the new one was not. This was'nt allowing the pump to seat properly, so I may have slightly bent the assembly part where the pump seats into. Are these pumps that touchy?

Anyone have any ideas? At this point I'm willing to re-remove the whole assembly and post up pics here so that someone may be able to help me. PLEASE!?
(sorry for being so long, just want/need this fixed asap)




Allen
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Old 02-13-2008
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Was there anything connected to the bottom of the old pump like a pick-up screen?
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Old 02-13-2008
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Thanks Rev, but I think I got it. The wife had to go out to Wally-World so I sent her to AutoZone to swap out the pump. I checked voltage, the vent line, and pretty much everything except the return line and pressure. There was one issue however that I had to resolve: the red and black wires running to the fuel pump were EXTREMELY loose so I thought that could be a problem. I crimped them down a little with some small needle nose and they went on tightly after that. For all I know that could have been my problem. I'm just happy for the moment because it's definitely doing better then it was.

I just swapped it out and took it for a test run and so far so good. It did'nt stall at all on the same run like yesterday. I'll know for sure in a couple of days (or tomorrow) wether or not I licked it.

Yes it did have the pickup screen on it but right now it does not. I accidentally damaged it upon removal and need to get another one. I'm relying on the inline one for now until the weekend then I'll pop another one in there. Thanks for the response.



Allen




Allen
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Old 02-13-2008
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Sounds like you might have found the problem. Fuel slosh may have caused an intermittent connection at the pump if the terminals were loose. Make sure you replace that pick-up screen it protects the pump.
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Old 02-14-2008
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I really appreciate the support Rev. Thank you.

Yeah, I took it out for another run with my daughter. A longer, more intense run with BIG hills and all. Seemed to do fine, and the big thing here is.......there's less gas in it now then when it was acting up just yesterday and the days before.

It would seem that for now it's fixed, but I just don't want to jinx it you know? By the way, you may be absolutely right on the fuel sloshing around and hitting the loose wiring. I was thinking that too for a while, cause right around the 1/4 tank or less mark seems to be where the fuel level would be more at chance of consistently hitting the wires.

I promise I'll put the screen back on it.........lol




Allen
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