Question about 1988 Ford Bronco II

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I have an 88 bronco II, and it has not been driven for a while. I am giving the car to my son, and replaced the battery (was dead), and the starter solenoid. Put some heat in the gas tank, along with fuel injector cleaner, and the car started up instantly and ran like a top. Turned it off and restarted several times and no problems. Went out to start it up today, and the new battery allowed to crank over very well, but it would not start. Did not sit and turn it over for more than about 30 seconds, but tried a couple of times with no luck. Any suggestions?

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  • Bill Johnson Jun 17, 2009

    Thanks so much for your prompt reply. The car sat for about a year and a half, and had almost a half tank of gas. I will check and make sure there is spark in the plugs, but am not sure how to check about whether fuel is getting to the injector. With a carburetor it was a simple matter of disconnecting the gas line and turning the engine over, but am certainly not an expert on fuel injection systems. By the way, I have had the little bronco since it was new and replaced the engine about 75,000 miles ago, along with the brain, ignition module and most of the components. Also replaced the fuel pump. What a job! Thanks again, will check out the spark and let you know if that is the issue. Bill

  • Bill Johnson Jun 17, 2009

    Hello again, checked the spark and believe me it is fine (checked it personally so to speak). Tried to locate the inertia switch, but no luck. Don't want to sound dumb, but I looked on the driver's side down by where my feet would be, pulled back the carpet as much as possible and could not find anything resembling the inertia switch. I am sure it is there, I am not just sure I am looking in the right place. Thanks again, Bill

  • Bill Johnson Jun 17, 2009

    Sorry for being such a pest. I finally located the inertia switch. On my 88 it is on the passenger's side just under the carpet by your feet. I pushed the button, which did not seem to be tripped, and it did not help. Since my bronco has an electric fuel pump in the tank and a higher pressure pump on the frame, if I crawl underneath and have my wife turn the engine over will there be enough vibration to tell if the fuel pumps are getting juice and operating? Thanks yet again. Bill

  • Bill Johnson Jun 17, 2009

    Ron, just got your latest post. Will have my wife get behind the wheel crank the engine. I will take a look into the throttle body and see if there is any gas. I will also (tomorrow, since it is now dark) get some more mid-grade gas and octane boost and put that in the tank as well. Will let you know how things turn out. Thanks for you patience, Bill

  • Bill Johnson Jun 18, 2009

    Ron, I ran out this evening and got a bottle of octane boost and put it in my bronco. I also put several more gallons of mid-grade gas in the tank. Alas, it still will not start. I checked the fuses and no problem there. The fuel pump, although a few years old, only has had about 10,000-15,000 miles of use. What do you suggest, willing to try about anything at this point. Like I said in my earlier post, when I first started it up after installing the new battery a couple of days ago it hardly turned over before it started and ran great. In need of advice, Bill

  • Bill Johnson Jun 18, 2009

    Ron, sorry, got ahead of myself. I also opened up the butterfly on the throttle body and used a flash light to look inside. I then had my wife get behind the wheel and hit the ignition for about 15-20 seconds. I could not see or smell any gas. Bill

  • Bill Johnson Jun 18, 2009

    Ron, I took a look under the hood on the right fender apron and near the starter solenoid there is a small plastic gray box that has an electrical connector attached. Is this the fuel pump relay, and how do I check it? Bill

  • Bill Johnson Jun 18, 2009

    Thanks Ron, it is dark again, and will have to give up for now. I am busy myself tomorrow evening, but will take a look at the relay on Friday. I called my nephew, who has also replaced a bronco II fuel pump (as have I), and he will try to help me this week end. Hopefully it will be the relay. I do have the two fuel pump set-up (low pressure in-tank and high pressure on the frame), so with help will try to figure out which one is the culprit, can't see how both could fail. Thanks again, will let you know how it goes. Bill

  • Bill Johnson Jun 19, 2009

    Ron, went out this evening to check the relay. Could clearly hear it click when my wife turned on the ignition key. Checked it several times to make sure, clicked every time. Also had her turn the car over and I depressed the schrader valve on the fuel line alongside the fuel rail of the throttle body - absolutely no fuel squirted out. I have to agree with you that I certainly have a fuel delivery problem. I am contacting my nephew and we will try to take a look at it this weekend. Will start with seeing if there is vibration coming from either pump, and will also change the fuel filter. Don't see how both fuel pumps could have failed but it would be just my luck that it is the in-tank pump that is the culprit. My nephew has professional jackstands, so we will be the reat end off the ground and get to work. Will let you know how it goes and if you have any other kind words of advice please let me know. I really appreciate your help, and will let you know how it progresses. Without saying, I will certainly give you a great rating. Thanks, Bill

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After a vehicle sets condensation builds in tank creates rust which kills fuel pump.and the fuel filter will rust up and plug pull tank replace if need be replace fuel pump and fiter check any rubber hoses for cracks

Posted on Jun 20, 2009

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1. If you have a Small Amount of Gas in the Tank, AND IT HAS SAT for A LONG TIME 10 months to 1 year & a Half the Gas Is Probably Bad, To Correct this If you Only have Say 3 gallons in tank You Can top it off with NEW Middle Grade Gas and As Long as "FUEL QUALITY" is the Problem This Should Be all for that Cause.
2. There is An Inertia Switch in the Driver side Kick Panel that May Have tripped and needs to be RESET Simply PUSH Button to FIX this NO FUEL Problem.
With what You have So far Described I could Go ON For a few with "POSSIBILITIES" but we need to Eliminate A Few Things Just Basic TROUBLESHOOTING Procedure for Cranks but "NO START Condition. If you will Reply with A few more Details such as Fuel Level,IS it Getting Fuel @ Intake?, Is it Getting Spark @ Spark Plug End of wire?.
Things Such as this Will Help Me Eliminate Many Items and Narrow Down My Suspicions to A FEW if not Just 1 Possibility.

So P L E A S E REPLY So We can Get this Puppy Going For Your Son. Hoping I Have and Can be of HELP to You! !

Posted on Jun 17, 2009

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  • Ronnie Wilson Jun 17, 2009



    OOps So Sorry

    The inertia switch is located below the instrument panel, to the right of the transmission hump.




    And Lol We Have Spark , That OLD Gas Doesnt Sit right With Me , Try Octain Booster Sense there is So Much in Tank

    To Check for Fuel You Need Help , you can Have Someone Crank Engine ( With Breather REMOVED and a Flashlight Look Onto the Throat of The Throttle Body While Help Cranks Engine

    There Should be UMBRELLA Shaped Spray Pattern Coming from Injectors If You get ANYTHING Other than this Such as it Dribeling Fuel out in SMALL Amounts there IS a FUEL Delivery Problem.

    Lets Keepon goin On this and We WILL Get it Figured out, Thank You _>> Ron

  • Ronnie Wilson Jun 17, 2009

    Ok Will look for you Tomarrow Bill

  • Ronnie Wilson Jun 18, 2009



    Ok This Sounds Like A Fuel Delivery Problem ----And Yes You Should Hear / FEEL A Vibration From Pump , If Equiped you Have 2 Pumps 1In Tank and 1 As a PULL Pump On the Frame Rail. We Need to see If the RELAY Is GOOD and After this ALL Points To The INTANK Pump. I will Do Some More Research On It And you give Input.

  • Ronnie Wilson Jun 18, 2009



    The Fuel Pump Relay is located in the Right Hand Fender Apron.











    CAUTION:
    Fuel supply lines remain pressurized for long periods of time after the engine is shut down. This pressure must be relieved before the fuel system is serviced. The fuel system on these vehicles is depressurized by disconnecting the inertia switch and cranking the vehicle for a minimum of 15 seconds.
    REMOVAL



    1. Place vehicle on hoist, do not raise.
    2. Depressurize fuel system.




    NOTE:
    The fuel pump/sender unit may be serviced by removing the pick-up box unit may be serviced by removing the pick-up box from the chassis, instead of removing the fuel tank.

    1. Remove fuel from fuel tank by pumping out through filler. Use care to prevent combustion from fuel spillage.
    2. Raise vehicle on hoist.
    3. Disconnect and remove fuel filler tube.
    4. Support fuel tank and remove fuel tank support straps. Lower fuel tank partially and remove fuel lines, electrical connectors, and vent lines from tanks. Remove fuel tank to bench.
    5. Remove any dirt that has accumulated around the fuel pump attaching flange so that it will not enter the fuel tank during procedures.
    6. Turn the fuel pump locking ring counterclockwise and remove locking ring.
    7. Remove the fuel pump and bracket assembly.
    8. Remove seal gasket and discard.

    INSTALLATION



    1. Clean the fuel pump mounting flange and the fuel tank mounting surface and seal ring groove.
    2. Put a light coating of grease on a new seal ring to hold it in place during assembly and install it in the fuel ring groove.
    3. Install fuel pump and sender assembly carefully to ensure that the filter is not damaged. Be sure that the locating keys are in keyways and the seal ring remains in place.
    4. Hold the fuel sender and sealing gasket in place, install and rotate the locking ring clockwise.
    5. Remove fuel tank from bench to vehicle and support tank while connecting the fuel line, vent line, and electrical connectors to appropriate places.
    6. Install tank in vehicle and tighten straps.
    7. Lower vehicle.
    8. Install filler tube and attaching screws.
    9. Install a minimum of 38 liters (10 gallons) of fuel and check for leaks.
    10. Turn ignition key to RUN position for 3 seconds repeatedly (5 to 10 time) until presure gauge shows at least 240 kPa (30 psi). Check for leaks at fittings.
    11. Remove pressure gauge, start engine, and recheck for leaks.

  • Ronnie Wilson Jun 18, 2009

    MIDSHIP TANK =< Tank @ Frame Rail



    REMOVAL



    1. Loosen screw attaching fuel filler hose to tank.
    2. Remove fuel cap from fuel filler pipe assembly.
    3. Remove three screws attaching tether (non-locking caps only) and filler pipe assembly.
    4. Detach fuel filler system from tank spud and remove through frame rail/body side void.

    INSTALLATION



    1. Attach fuel filler system to tank spud.
    2. Replace three screws attaching tether (non-locking caps only) and the filler pipe to body housing.
    3. Attach fuel cap to fuel filler pipe assembly.
    4. Tighten screw clamp attaching fuel filler hose.



    AFT AXEL Tank =< Tank Behind Axel

    REMOVAL



    1. Drain fuel from fuel tank. Remove skid plate, if so equipped.
    2. Remove two bolts from fuel tank support and straps.
    3. Loosen screw clamp from fill pipe.
    4. Lower fuel tank.
    5. Remove sender unit, vapor valve tubes and push connectors.

    INSTALLATION



    1. Raise fuel tank and attach sender unit, vapor valve tubes and push connectors.
    2. Install fuel filler pipe on tank and tighten clamp. Refer to SPECIFICATIONS .
    3. Attach two bolts to fuel tank support and straps and tighten.
    4. Install the skid plate. Tighten mounting bolts and nuts to specification

  • Ronnie Wilson Jun 18, 2009

    If you Did Not See/ Smell Fuel @ Throttle Body This Means We Go to Fuel Delivery, and Eliminate ALL ELECTRICAL Units BEFORE FUEL PUMP FIRST Then Resort to Fuel Pump Replacement.

  • Ronnie Wilson Jun 18, 2009

    Have to Inlist the Help of the WIFE again, you Should Get A Click out of it As the Ignition is Turned ON. If NOT Relay is Bad And This should be Replaced . Sorry so Long to get Back to you Seems I'm in High Demand Tonight, I Have Someone in Another Window I'm Helping.

  • Ronnie Wilson Jun 18, 2009



    If you are Compfortable with it ,

    You Can BY-Pass The RELAY to See if it Runs the PUMP.

    Just Check w/ Testlight for the 12vlt Power In Lead @ Relay Plug and Cross it to the PUMP OUT POWER Terminal, Pink w/ Blk Tracer-- I will Double check the Schematic for those Colors

  • Ronnie Wilson Jun 18, 2009

    Please DO let me know Anf AGAIN Feel Free to Ask Me Anything And I Will be Happy to Help, Maybe I can get A Good Rating Too loL. Take Care !!

  • Ronnie Wilson Jun 19, 2009



    Checked in On Thursday, But Guess you are Busy As you Said, Get Back to me If Needed !

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