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  #1  
Old 04-28-2009, 08:54 PM
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Join Date: Apr 2009
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Default bet no one can fix my fuel problem

i have a 1999 ford ranger and its not getting fuel. the pump was my first guess so i took it out and jumped it and it worked so it was not a bad pump. i then looked at the inertia swith and it was fine and what not. so im out of guesses of why my pump will not pump.
thanks for your time
-brody
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  #2  
Old 04-29-2009, 05:25 PM
Custom KeyChain R Me
 
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you have a returnless fuel system, so you have no pressure at the rail? or just low pressure? you should have 57-72 psi all the time. you could have a tear in the hose in the sending unit. the pump runs wide open all the time with a bypass in the sending unit, letting th eextra fuel flow right back into the tank.
i would see if you have any fuel pressure at the rail, is you do and it is low look at a week pump or a bad hose. how many miles on the truck it may just be time to replace the pump

curt
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98blown you should be an MD! that's the same stuff my doc asks and ur spot on man!!!
98 4.0 2wd-----supercharger fully build heads cam...all show with go......3 time world of wheels champ 5 time national winner


lots of ranger parts for sale leftovers from my 94/96
96 sitting on the frame, waiting to go lower


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  #3  
Old 05-01-2009, 10:39 PM
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it has 100k an no presure was at the fuel rail. i am replacing the sensor on the module an seeing if that will work...
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  #4  
Old 05-02-2009, 04:14 PM
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you may be better off replacing the whole assembly then you don't have to touch anyting again
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Quote:
Originally Posted by redrumedge View Post
98blown you should be an MD! that's the same stuff my doc asks and ur spot on man!!!
98 4.0 2wd-----supercharger fully build heads cam...all show with go......3 time world of wheels champ 5 time national winner


lots of ranger parts for sale leftovers from my 94/96
96 sitting on the frame, waiting to go lower


custom billet parts by me intake adapters and billet steps for the step sides

please sign my guestbook!!
http://breyperformancemachine.shutterfly.com/
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  #5  
Old 05-05-2009, 06:46 PM
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could it be the ecu not sending for the pump to turn on?
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  #6  
Old 05-05-2009, 06:59 PM
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Anything could happen, do you hear the pump turn on when you turn the key to ON? you should hear it. if not use a test light to see if it is sending power, if no power then the computer may be the problem. I would think it would be more pump related.

curt
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Quote:
Originally Posted by redrumedge View Post
98blown you should be an MD! that's the same stuff my doc asks and ur spot on man!!!
98 4.0 2wd-----supercharger fully build heads cam...all show with go......3 time world of wheels champ 5 time national winner


lots of ranger parts for sale leftovers from my 94/96
96 sitting on the frame, waiting to go lower


custom billet parts by me intake adapters and billet steps for the step sides

please sign my guestbook!!
http://breyperformancemachine.shutterfly.com/
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  #7  
Old 05-05-2009, 07:15 PM
92 Ranger 4.0 5 speed 4x4
 
Join Date: May 2009
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the whole fuel pump assembly is about 200 or 215 with tax in ga
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  #8  
Old 05-06-2009, 04:50 PM
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ya i know it turns on with the key in on position but its not turning on at all the assebly is out and no soud of pump working. i am picking up an ecu and fuel pump assembly for 60 bucks so i will see what the outcome is.
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  #9  
Old 05-14-2009, 07:24 AM
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did you recently do any wiring work? i highly doubt the ecu just all of a sudden went bad. if your turning the truck on and dont hear the pump kick on then shut off after it builds pressure its something with the pump
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  #10  
Old 05-22-2009, 10:00 AM
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have u checked the relay the pump and ignition relay go out on those pretty regular.
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  #11  
Old 03-01-2010, 11:46 AM
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having same problem, 99 4.0 with new fuel pump, changed relay, checked inertia switch,12 volts when key is turned on at first, after relay cliks off volts drop to 6v. apply 12v direct to pump it runs strong. if you figured yours out let me know and will do the same.
thanx.
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  #12  
Old 03-01-2010, 06:20 PM
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I had a similer issue with a 93 escort a few weeks ago. Drove me nuts for 3 days, trying to figure it out. Finally out of desperation I gave one last look under the dash and found a circuit breaker that was tripped. Reset it and everything worked like new. It was weird because The breaker was no where to be found in any of the wiring diagrams, not even in a mech. friends computer data base. Not sure if your ranger has something simmiler but it might be somethin to look for, if you have run out of ideas.
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