Hell all,

I have a 90 e 250 with a 351 and dual tanks. The floats on both tanks are not working so I have to keep track of full/empty manually. I recently "ran out" of gas on my rear tank sooner than I expected. I filled it up and sure enough I had over 8 gallons in the tank. After filling it up I switched bak to the rear tank and soon after that it "ran out" again. Switching to the front tank always worked, so I assumed something with the rear tank and began to search here for solutions. I figured it was either the pick-up filter or the in-tank pump. Idropped the tank and pulled the assembly out. I took the pump and put it on 12v and it spun just fine. I replaced the filter and reinstalled it. It continued to fail , so I dropped the tank again and replaced the pump and the filter. After I reinstalled it, it continued to fail. It works intermittently, then will quit and I have to switch to the front tank. Is there something I am missing? I can live with just the front tank but it is a pain to fill up every couple of days. I would appreciate any input on a solution to this problem.


Thanks,
Larry

 

You have a bad Selector Valve on the frame or a bad switch on the dash.

 

Is the Selector Valve near the reservoir? I can just check the switch with a multimeter, right?

Thanks

 

The Selector Valve and the reservoir are one in the same. The Selector Valve/reservoir is non-electric.

Yes you should be able to check the Selector Switch on the Dash with a Multimeter.

 

Thanks, I will post when I have a solution.

Larry

 

Here is a diagram that should be close to what you have.

The electrical:
http://i54.photobucket.com/albums/g9...el1988E150.gif

The Selector Valve on the frame.
http://i54.photobucket.com/albums/g9...Fuel/dfres.gif

 

My valve is very similar to that, it does not have a filter internally. Other than that it all looks the same. Thanks.

 

deleted for double post

 

They only had the filter in it in 1986-87 and then they moved the filter towards the front.
I do not have an image of the selector valve without the filter.

Here is an image of the fuel system.
http://i54.photobucket.com/albums/g91/subford/Fuel/88Fuelsystem.gif

 

Is that valve a dealer only part? Any suggestions on source?
Pics are good...thanks.

 

Yes it is a dealer only part and they have to order it. I think it is around a $100.00.

 

Thanks for the help. I believe the problem is solved. Here is what I did.

1st - I looked at the dash switch and decided it would be a nightmare to remove if I could not get the dash off. Getting to the switch from the firewall side seemed like it was going to be a major job. I took dome of the dash screws of and realized the jobe to remove the dash was going to be a nightmare as well. I removed the switch bezel and realized if I could pry the dash out about 1 inch I could get the switch/harness assembly out in the open. I removed the switch and it tested good on all poles. Five minutes and it was in and working fine again. Nightmare averted.

2nd - Call dealer and inquire about part. They've got two in stock. Only $124.22 each.

3rd - Decided at that price, I would go to pick-a-part and see what I could find. I found several and actually removed two. One from an 89 E250 and one from an 88 E150. Part numbers were identical so I took the one from the cleaner and lower mileage vehicle...the 88 E150. A trip to pick-a-part requires trolling. I get a couple of window switches for the E250 (intermittent failure) and a door slide handle for the wife's Aerostar. Sadly no appropriate Hondas were available for scavenge so I was only two for three. Good news is I walked for less than $8 total including admission. Gas for the trip should be about $6. $14 + my time and I am still out for less than the dealer part.

4th - Install part and hope it works. 20 minutes later and several miles on test drive and all seem to be functioning properly.

5th - Heap many thanks and gratitude on subford for his quick and correct diagnosis.

This place is excellent.....again.

Larry