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1987 - 1996 F150 & Larger F-Series Trucks 1987 - 1996 Ford F-150, F-250, F-350 and larger pickups - including the 1997 heavy-duty F250/F350+ trucks

Front Tank Problem

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Old Jul 29, 2006 | 12:50 AM
  #16  
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I took the dash panel off to test mine, you just ohm across the pins that should select. if one doesn't connect its bad.

I had a hard time getting the connector pin to make sense when I did mine. It seems like my readings were close to that.

with the pump disconnected you could jumper the FP relay to give you 12volts, otherwise you only get it for 3 seconds after you turn the key on.
 
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Old Jul 31, 2006 | 01:12 PM
  #17  
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So am I right? One relay controls both pumps? Or does each pump have a relay? Thanks.
 
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Old Jul 31, 2006 | 01:17 PM
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One relay, two pumps.
 
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Old Jul 31, 2006 | 04:17 PM
  #19  
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I was able to print out the auction on ebay for a fuel pump and take to my local parts store and they had the same pump and matched the price. Saved me $30.00. Thanks guys. Here's my question when installing the filter on the bottom of the new pump which way does it go? A friend was over and pulled the old one apart before I had a chance to look at it. I've included some pics. Take a look and let me know what you think. I can still turn it however it needs to go.



 
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Old Jul 31, 2006 | 04:19 PM
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The filter on the bottom doesn't matter, as long as it's on there tight.
 
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Old Jul 31, 2006 | 04:22 PM
  #21  
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There's not a certain way so it sits right in the tank? For the proper flow? What about the buss connectors? Any problems with them being exposed to gas in the tank? Looking to install in the morning. Thanks again for all the help.
 
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Old Jul 31, 2006 | 04:39 PM
  #22  
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Decided to go with the old fuel level sending unit. When hooked up I moved the lever up and down and fuel gauge in the truck responded to the movements.

 
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Old Jul 31, 2006 | 04:55 PM
  #23  
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Originally Posted by Psycho Sasquatch
There's not a certain way so it sits right in the tank? For the proper flow? What about the buss connectors? Any problems with them being exposed to gas in the tank? Looking to install in the morning. Thanks again for all the help.
I was freaked out about that too. Then I realized that in order for there to be an explosion inside the tank, two things would have to happen: There would have to be air in the tank. Last time I checked, there is no air inside a gas tank, only gas vapor. Secondly, you would need a spark or other heat source. Current running through a wire isn't going to do it.
 
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Old Jul 31, 2006 | 05:01 PM
  #24  
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Crimped the wires with the buss connectors. Took the pump outside and hooked it to the harness. Put the selector switch to the front tank turned the key on and.............IT WORKED!!!!!! Now remember from my previous post I was able to do this with the old pump and when I raised the tank it quit working. Don't believe I'll have the same problem this time. (fingers crossed) Even after removing the old pump again I was never able to get it to work again. I moved the lever again on the fuel level sending unit and the gauge responded. I'll post sometime in the coming days and let you guys know. Today was able to also change the tranny fluid and the fuel filter. Giving everything a routine maintenace as this truck has 172,000 miles on it and still has the original clutch. Got it brand new with .7 miles on it in 1995. The way I figure it this money spent is still cheaper than a monthly payment. So no special way for the filter on the bottom?
 

Last edited by Psycho Sasquatch; Jul 31, 2006 at 05:04 PM.
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Old Jul 31, 2006 | 07:21 PM
  #25  
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Look on the bottom of the plastic module. I noticed on my spare today that there is an indicator to show the proper mounting of the filter...... just an imprint in the plastic.
 
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Old Aug 1, 2006 | 07:41 AM
  #26  
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I've changed or removed/reinstalled 5 fuel pumps in the last 6 months. When I removed the pump from the tank on my parts truck, that I was installing on my driver, the filter came off. Since the removed pump was good I went to reinstall the filter so I could store the pump for future use. Only then did I notice the little diagram on the bottom of the pump showing how to index the filter. This pump module has been replaced since the wiring is butt-spliced. Check the bottom of your pump module.
 
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Old Aug 1, 2006 | 07:46 AM
  #27  
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Old Aug 1, 2006 | 11:45 AM
  #28  
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Yep, that's what that is alright. I must have overlooked that. I don't see how it would make much difference though.
 
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Old Aug 2, 2006 | 05:14 PM
  #29  
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Well got it put back together and all is good. Front tank is working. Have not taken it out on a road test but fired right up in the driveway and ran smooth. My old fuel pump and the new one both had the same outline on the bottom as in ncranchero's picture. That's a cool little nugget of info to have in the future. Gonna replace cap, rotor, plugs, wires, air filter, pcv valve and filter in the morning. Also changed the oil and filter today. Thanks for all the help guys I really appreciate it.
 

Last edited by Psycho Sasquatch; Aug 2, 2006 at 05:17 PM.
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Old Aug 2, 2006 | 05:36 PM
  #30  
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Of all the pumps I had changed, I had not seen that until last week. I always just put the new filter on like the old one came off. You didn't have that to go by. Glad to have been a help!
 
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