Question about 1991 Ford Bronco

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I have a 1991 Ford bronco 5.0L it started dying after driving it a hour or two after it warmed up only when changing directions. Rev to Drive. Now the engine will turn but will not fire. Ive replaced fuel filter,pump,ignition control module,checked all voltage from batt. to plugs,did the keyoff code reading came up ok,relays and actuators and their circuits good. any advice?? Iam at a stand still.

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  • swaff Mar 04, 2009

    The engine's turning over so it couldnt be the starter.

  • swaff Mar 04, 2009

    Thank you, i will try that out.

  • swaff Mar 04, 2009

    Can you still pick up codes off a bad pcm? Thank you

  • swaff Mar 04, 2009

    Yes changed the TFI ICM but not dist. stator. I will add it to the list thanks..

  • swaff Mar 04, 2009

    No coil pack, but i used a OBD-1 and OBD-11 Ford digital code reader (could only do KOEO Test though) relays, actuators, and their circuits came back good as far as the KOEO test.. thankyou

  • swaff Mar 04, 2009

    No coil pack, but i used a OBD-1 and OBD-11 Ford digital code reader (could only do KOEO Test though) relays, actuators, and their circuits came back good as far as the KOEO test.. thankyou

  • swaff Mar 04, 2009

    Ya Changed the TFI ICM. Thanks

  • swaff Mar 04, 2009

    Thank You man that makes all the sense. Appreciate it, my headache is over..

  • swaff Mar 04, 2009

    Thank You man that makes all the sense. Appreciate it, my headache is over..

  • swaff Mar 04, 2009

    Thank You man that makes all the sense. Appreciate it, my headache is over..

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7 Answers

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  • Master
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Did you check the ignition fuse? also a bad ing switch will cause this

Posted on Mar 04, 2009

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  • Master
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Coils rarely go bad on fords, however they did have a lot of ignition module problems. If the module goes bad, it will act up mostly when hot, and you will have fuel but no spark. The module is the box on the side of the distributor. Probably wouldn't hurt to check out the distributor cap and rotor as well. If the check engine light is on, having a shop check for codes may help you locate the problem.

Posted on Mar 04, 2009

  • mohammed marika thambi
    mohammed marika thambi Mar 04, 2009

    : You most likely need a new DPFE sensor. It's a little rectangular
    box attached to the intake manifold with one wire plug and 2 hoses
    attached to it. This sensor is used to help control the EGR system and
    they fail a LOT. They generally cost around $70 and are available from
    Ford and some other parts stores

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Not sure if that has a coil pack but you need to test that.... cycling the key off and on... three times ending in on... should allow you to read the codes.... count the times it blinks... have someone write them down as you watch them so you don't miss any.

Posted on Mar 04, 2009

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  • Master
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It sounds like your ecc relay is bad i havent seen this problem in a while! it gets hot and shuts down your computer controls such as spark and fuel it is located on the drivers side inner fender. hoped this helped.!

Posted on Mar 04, 2009

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  • mike loshbough
    mike loshbough Mar 04, 2009

    some times but try the relay it cost about 15 dollars

  • mike loshbough
    mike loshbough Mar 04, 2009

    no dude it wont make a sound

  • mike loshbough
    mike loshbough Mar 04, 2009

    napa will have that relay instock your system is known as a eec4

  • mike loshbough
    mike loshbough Mar 04, 2009

    what is your fuel pressure?

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  • Master
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Hi!

Is the starter motor running? If the starter motor doesn't turn, but the starter solenoid (relay) "clicks" when the ignition switch is turned to Start, the problem is with the battery, starter solenoid, or starter motor connections.

Also, check the battery ground cable connection to the body and engine.

Posted on Mar 04, 2009

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  • Expert
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Hello,It sounds as if you may have a bad pcm.

Posted on Mar 04, 2009

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  • suterman
    suterman Mar 04, 2009

    Have you tried to replace the pick up in the distributor, I have seen them short out after getting hot.

  • suterman
    suterman Mar 04, 2009

    Hello, I completely forgot I know what has happened the Manual Lever Position sensor is bad. The selector switch on the side of the transmission will cause it to quit firing. Im sorry my mind drew a blank awhile ago. I have had the same probem before, twice.

  • suterman
    suterman Mar 04, 2009

    It wont be the pcm. It's the Manual Lever Position Switch.

  • suterman
    suterman Mar 04, 2009

    What gave it away is when you talked about shifting gears. Go buy the switch and be done. Ask for a manual lever postion switch.

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  • Ford Master
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Did you replace the distributor stator and the EEC IV TFI ignition control module? both are parts in and on the distributor, these are by far the biggest cause of no starts, in fact numerous class action law suits for the parts numerous failures.

Posted on Mar 04, 2009

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