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  #1  
Old 12-08-2010, 08:49 PM
loyalford loyalford is offline
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Question NO SPARK ON PLUGS 4.0 distriberless

I have a 91 ford rander 4.0 4x4 sometimes it will spark on the spark plug and run other times it wont. I replaced the ecm. Replaced the crankshaft sensor. And this has the distriburless syestem. I replaced the edis 6. And also replaced the coil pack. Heres whats going on. I can go out some days or some hours and the truck with fire up and run just fine. You drive down the road seems fine.Then all of a sudden it shuts off. Try to start it up and wont start. I pulled plug wire off spark plugs and had my brother turn it over as i held the wire with my hand and no spark and even grounded plug to block to see if spark nothing. So i went to get a vechile to tow it and decided to try and start it and it fired up drove it 2 blocks and died again wouldnt start and no spark at spark plug.I replaced the ecc relay. Checked fuel pressure and the pressure is right with ford garage.I still replaced the fuel pump.I replaced the crankshaft sensor.I replaced the ecc relay.I replaceed the edis,Replaced the coil pack.Replaced the ecm.I do have voltage going to the coil pack. This randomly happens and cant be trusted driving on road.You can smell gas when cranking it over as if im flooding it out but just whips over no spark.I also tried to run a code check again and no codes are reading. Im at loss with this.I bought this truck brand new in 91 it was the 91 ford ranger 4.0 sxt 4x4. what could be the issue here?Im so lost on this and its got me at my wits and really irrated with it. any help would be greatly appreicated sooooo much. ill give my number or email out anything i can do to get help here.Im new here bare with me.
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  #2  
Old 12-08-2010, 08:54 PM
tmoore78 tmoore78 is offline
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Default Re: NO SPARK ON PLUGS 4.0 distriberless

I would check the crank sensor again. sounds like exact syptoms
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Old 12-08-2010, 09:02 PM
loyalford loyalford is offline
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Default Re: NO SPARK ON PLUGS 4.0 distriberless

ive replaced 3 of them and still same problem bought one from orielys and bought one from napa and then bought one from ford garage
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Old 12-08-2010, 09:31 PM
loyalford loyalford is offline
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Default Re: NO SPARK ON PLUGS 4.0 distriberless

by the way thanks for replying to the thread
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  #5  
Old 12-09-2010, 07:41 AM
wintermute wintermute is offline
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Default Re: NO SPARK ON PLUGS 4.0 distriberless

Have you replaced the plug wires? A crack in the insulation elsewhere on the line could allow grounding away from the plug end. Usually it'll just be the insulation on one wire that cracks and gives you a misfire, but if they're all shot I suppose it could kill an engine like you're describing.
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Old 12-09-2010, 02:25 PM
loyalford loyalford is offline
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Default Re: NO SPARK ON PLUGS 4.0 distriberless

First off thanks for responding, I didnt check the plug wires. but after reading this i went out and got a whole new set of plug wires and put them on and still the same situation.Is it possible the ignition ground is broke and not getting ground? how much voltage should the ccrank shaft sensor have when the key is on? and when its started? how would u check the volatage on the crank shaft sensor? any suggestions i will consider doing.

Last edited by loyalford; 12-09-2010 at 02:36 PM.
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91 ford ranger, coil, edis, no spark

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