Question about 1987 Ford Bronco
I have replaced the ignition module spark plugs rotor and button
Posted by Anonymous on
I am guessing its your TFI or Thick Film Ignition module. Usually located on the underside of your distributor, its either grey or black in color and often when it is going bad it acts like this: Usually starts fine, runs ok for about 20 min then engine dies. cranking engine sounds normal but no start. checking spark will have no sparks. Leave hood up and allow to cool (also TFI very hot to the touch) I packed Ice around it once (in a ziplock) that made it run in about 45 min. NOTE: get ready to replace real soon because its on the way to breaking down.
Posted on Jun 12, 2014
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Posted on Jan 02, 2017
SOURCE: weak spark + 1988 ford bronco
i have an 89 ford bronco if i drive it to work get home shut it off try to start it again it wont start sounds like the battery is dead but have replaced the battery what could it be
Posted on Jan 03, 2009
Have u checked for vacuum leaks or poss leaking EGR valve? use carb spray around the upper intake manifold where it bolts to the lower manifold, spray vacuum lines where they are connected to the engine vacuum ports, the idle speed will change if u hit a leak, as far as the EGR valve goes see if it gets hot at idle, if it does it is leaking, if all checks ok replace the O2 sensor, but i suspect u will find a leak at the upper intake plenum.
Posted on Jan 10, 2009
The engine is definitely in an over rich fuel condition if you are blowing black smoke. I would suspect a bad 02 sensor, but the flooding condition you describe at starting could be other things. I would check the codes and proceed from there.
Posted on Jul 13, 2009
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