Question about 1988 Ford Ranger

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1988 ranger It is a 2.3 4 cyl, both fuel pumps do not work, if it sits 1 or 2 days it starts up again and die's, I put a pump in the tank and got about 13 miles and it died again, Now i have no pumps, I also replaced the fuel relay's that click when you turn the ignition on, and the ignition module, and the computer which I thought was the proplem,it was the last thing I replaced. I also ckecked the fuel shut off switch, Is there somthing I missed. Thax Bob

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  • gts3 Sep 11, 2008

    I already replced both fuel filters

  • gts3 Sep 11, 2008

    Yes I alredy repalced both fuel filters Is it something electrical

  • gts3 Sep 11, 2008

    Yes, But the pump in the tank and the high pressure pump are not powering up, when I test the Shut off swicth it tested 12 volts for 2 too 3 secounds and zero's out no power,is there another electrical commponit left to replace, I just trying too figure out why both pumps are not comming on, when I replaced the fuel filers today, they came on 3 or 4 times and then nothing,

  • gts3 Sep 11, 2008

    Yes I had a 1986 ranger, That was the first ting I checked, I did clean the geond cables and it fired up and got 2 miles, I thought that was the problem, Tanx anyway

  • gts3 Sep 12, 2008

    If it sits a few days the pumps work, And it tries too start, it coughs and putters, then the pumps Quit working,Its like something gets hot, and quits.

  • gts3 Sep 12, 2008

    Am I going to have to hard wire to pressure pump

  • gts3 Sep 12, 2008

    It is a 2.3 ( 4) cyl, both fuel pumps do not work, if it sits 1 or 2 days it starts up again and die's, I put a pump in the tank and got about 13 miles and it died again, Now i have no pumps, I also replaced the fuel relay's that click when you turn the ignition on, and the ignition module, and the computer which I thought was really the problem, It was the last thing I replaced. I also checked the fuel shut off switch, It has 12 volts and the goes to 00 volts in a couple of seconds, Also replaced fuel filters.

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9 Answers

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Ford have a reputation for using similar parts throughout their entire vehicle range, I noticed that your truck is a 1986, in the mid to late eighties in the UK the Escort and Fiesta range of cars suffered from cheap and nasty fuse boxes and Ford wanted double the price of the original for a replacement.
You mentioned you thought it was something overheating and cutting out, I agree, I also noticed you mentioned the idea of hardwiring the pump, you must have been reading my mind.
I would hardwire the pump temporarily just to keep the truck running and in the mean time try and track down what to me is a joint over heating and breaking down, my first thought is the fuse box but knowing Fords like I do i wouldn't rule out anything. Start by checking the ground points all the way back to the main harness.

Posted on Sep 12, 2008

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You are going to have to replace the ignition switch, these usally burn out and will make internitten contact test the switch for power out to the fuel pump relays, also this is a well known problem on the 93's otherwise i would check your harness under the truck im almost positive your ignition switch is bad please rate -jeff

Posted on Sep 12, 2008

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If you are getting fuel, your pumps are working, your fuel filter is clean, then try going back to basics. Is the fuel clean and good. Are your plugs good? How about the wires and the distributor? Does the truck start at all? Need more description of what the truck is doing besides dieing. Does it shudder? What kind of sound does it make? Have you checked to make sure all your fuses are good? I can help but need more detail. But your best bet is to start from your ignition and work your way to the fuel pump checking for electrical shorts. Then check from the starter to your distributor. Double check that ditributor for hairline cracks.

Posted on Sep 12, 2008

  • havinfunyet Sep 12, 2008

    Have you checked to make sure there isn't a vacuum leak. Maybe your air fuel mixture is out? Does your ranger have an o2 sensor/

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Replace the pump with an inline fuel pump. its easier and u can hear it working plus you can run it to the fuse box to a fuse that comes on and shuts off with the key. its easier to put in and is an assured way to make the truck run again

Posted on Sep 12, 2008

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I think it is fuei ignition or the combustion problem  check them....................

Posted on Sep 11, 2008

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At the pumps unplug the wire harness and see if there is power there if not go over all your relays and see if there is any shorts if not there will be a electrical problem some were,,,,if there is power there check and see if its putting the right volts out

Posted on Sep 11, 2008

  • chris07551 Sep 12, 2008

    it also can be a problem at the ignition not activating the pump

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I had this problem on a full size f150 check your negitive battery cable there should be a a small wire comming from it . this is where they pull the negitive and it can be intermittent so make sure it has a good connection. . if that is not it you have a hard wireing problem and have to chase it down.

Posted on Sep 11, 2008

  • paul erickson
    paul erickson Sep 12, 2008

    befor you go to far jump a hot wire to the pump side of your relay and see if it continues to run. you can get all the info and diagrams on line for a fee at alldata.com that is what all the pros use
    thanks paul i still think your comp is telling it not to run the pumps


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Check the voltage at the wirings coming to the pump, if the pump keeps blowing, then there may be a wiring problem, for example a short that damaged the pump after replacement.

Posted on Sep 11, 2008

  • Ginko
    Ginko Sep 11, 2008

    It is electrical, it is probably a wiring problem, you need to grab the tester and check circuits to the fuel pumps.

    See same problem here


  • Ginko
    Ginko Sep 12, 2008

    You need to buy a repair manual with the wiring diagrams, and find out where the line is broken.
    You can test both pump energising them directly.
    The best repair manuals are Haynes/Chilton, you can get it here:

    Ford Ranger Repair Manual

    Buy the Haynes Paper Repair Manual
    1983-1992 Ford Ranger

    this one




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The fuel filter...?

Posted on Sep 11, 2008

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