Question about 1987 Ford Bronco II

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I have a 1987 bronco ii with a 2.9 engin. When it is warmed up it looses power and dies. after about 10 minutes it starts up again but soon dies. whats up with that?

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  • Jackson Mcclure Sep 23, 2013

    could be a clogged catalytic converter

  • Jackson Mcclure Sep 23, 2013

    Mine did the same thing. The catalytic converter clogged and shot resin into the muffler and clogged it too. Now I have to replace both.

  • Jackson Mcclure Sep 23, 2013

    Try taking the catalytic converter loose and running it.


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Measure fuel flow and flow VOLUME. Plugged filters and tank strainers are suspect.

Posted on Sep 01, 2010

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1 Answer

My 1989 bronco 2 was starting & running fine one minute and the next minute wont start & has power to nothing. what could it be?

i would take the ground wire loose from engine and clean it. i seen one before that lost ground and wouldnt start

Jul 08, 2012 | 1989 Ford Bronco II

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Cold starts ok warms up shakes and stalls

check engine coolant temperature when it gets warmer, or at operating temperature, and verify that the temperature gauge is showing warmed up to operating temperature. If the coolant temperature sensor tells the computer the engine is cold it will over fuel and miss and the engine will die. When cooled down it will run fine until it warms up. Also could be coil if it starts missing after warmed up.

Aug 18, 2009 | 1990 Ford Bronco II

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2.9 ford bronco 2 runs about 10 min. then just shuts off like you turned off the key ??

replace you duraspark box, when it warms up it shorts out causing the engine to lose fire and quit.

Jul 18, 2009 | 1987 Ford Bronco II

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1990 ford bronco cuts off after it warms up

sound like ignition module act up when engine is warmed up.

May 25, 2009 | 1990 Ford Bronco

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87 ford bronco II idling and power problem

check the i.a.c. (idle air control) valve near the throttle body, it fixed my low idle!

Sep 09, 2008 | 1987 Ford Bronco II

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