Im thinking bad lift pump
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Fleet Mechanic
Joined: Oct 2012
Posts: 1,943
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Im thinking bad lift pump
So here's the situation. My '88 E250 acts like it runs out of fuel after I have used 14-16 gallons out of the tank. This first happened when I was running off the front (16 gallon) tank. I refilled and it took 14 gallons. I figured my pickup tube was probably messed up. I started running off the back (larger) tank and had the exact same thing happen after driving almost the exact same distance. Went to fill up the tank and it took 16 gallons. Now I am thinking that the odds of my fuel pickup being damaged at the same level in seperate tanks is pretty unlikely. I am thinking that as the fuel level drops it puts more strain on the lift pump. Is my thinking correct?
I kinda ruled out the IP because it will fire back up when I switch it to a full tank.
I kinda ruled out the IP because it will fire back up when I switch it to a full tank.
Freshman User
Joined: Sep 2011
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I'd just replace the pump anyway. They are only $8-$10. not really anything to lose there plus then you also don't have to worry about the rubber seal failing and filling your crankcase with diesel fuel.
If it doesn't fix the problem then your pickups are prob junk.
If it doesn't fix the problem then your pickups are prob junk.
Lead Driver
Joined: Apr 2008
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Different level inside the tanks though, the rear is shorter / wider, front is taller narrower. For instance, 2 gallons in the front might be 4" deep, while it takes 4 gallons in the back to be 4" deep (these numbers are all hypothetical) so could possibly be pickup tubes. Im pretty sure i have the pickup tube issue as my tank is a 18.? gallon tank and when i run completely out ive never gotten it to take more than 15 even.
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Fleet Mechanic
Joined: Oct 2012
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Thanks. I will go ahead and replace the pump since it is cheap to do.
My fuel gauge doesnt work (valve switches, but needle sits at E), so I think I will be replacing the sending units here pretty soon (after I verify they are bad). I will examine my pickup tubes when I do that.
My fuel gauge doesnt work (valve switches, but needle sits at E), so I think I will be replacing the sending units here pretty soon (after I verify they are bad). I will examine my pickup tubes when I do that.
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Joined: Sep 2011
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Oops they used to be cheaper. Sorry about that, anyway its $25 for a fuel pump....
your sending units will $250....
your sending units will $250....
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Fleet Mechanic
Joined: Oct 2012
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Yeah, not cheap!!
Okay, so you wouldn't worry about the pump? Just keep the fuel level high enough for now and fix it with the sender units? It looks like the new senders come as a complete assembly with a new pickup as well....do you know if this is correct.
Okay, so you wouldn't worry about the pump? Just keep the fuel level high enough for now and fix it with the sender units? It looks like the new senders come as a complete assembly with a new pickup as well....do you know if this is correct.
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From: Houma,Louisiana
Not sure if they come with new pick ups or not. The sending unit in my front tank is bad, so I just keep track of the mileage when I am on that tank. I am also not sure about the availability of the senders for vans, but do know that they are almost impossible to find for the trucks. Someone here has posted a link in the recent past for a place that will rebuild them.
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Fleet Mechanic
Joined: Oct 2012
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It is. What all does it include. They are listed as avialable at out loval AutoZone, but are over $100 each. The AutoZone one is the complete assembly though, it has the floats and everything. It claimes you just drop it in and your good to go.
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Fleet Mechanic
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At RockAuto it says that the OHM range is 10-80. For some reason I thought ours were different than that.
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