Pre-1997 Models

94 f150 dies while running

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Old May 26, 2010 | 04:28 PM
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94 f150 dies while running

ok ive had numerous problems with this truck lately, but this is the one thats most troubling at the moment. i have a 300ci I6 and this is the 2nd engine thats been in the truck. last month i was driving along and the truck just shut off, as if i turned off the key. i tried to start it again and it would turn normally but not fully start. after 2 hours of trying it started again i took it to a friends shop and it threw codes for bad distributor so i replaced the whole unit. no fix. sometimes it will run fine all day and sometimes it wont even start in the morning. sometimes it will start and die after 5 miles sometimes 50. im clueless at this point

At the same time im losing oil presure. i think this is a separate issue but sence i know there is a shaft that runs from the dist to the oil pump. i thought id throw it in.
the oil pressure gage would jump back and forth then i had no pressure so i did and oil change and it was ok for about 10 minutes of driving then started again. so i emptied out all the oil and filled the pan with carborator dip. i was told it would break up the gunk on the screen of the oil pump. It did just that and now i have good pressure again but still the electrical problem

Ive checked the ignition fuses, there all good. Ive checked the battery wire/terminals and there fine. I'm at a dead end Ive spent hours searching and cant figure it out any help would be greatly appreciated. I dont have money to waste throwing parts at it or taking it into a shop
 

Last edited by canc3r; May 28, 2010 at 01:33 PM.
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Old May 26, 2010 | 07:18 PM
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ok when the truck doesnt want to start. it has not spark from the coil to the distributer and it seems that the node has some carosion. could this be the issue? or maybe the crank posistion sensor?
 

Last edited by canc3r; May 28, 2010 at 01:33 PM.
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Old May 27, 2010 | 07:13 PM
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ok well i just replaced the coil and the icm and theres already a new distributor ... theres nothing left to replace is there?
 
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Old May 27, 2010 | 08:40 PM
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It could be a fuel pump on the way out.
 
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Old May 28, 2010 | 11:56 AM
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ya its totally not the fuel pump its a spark issue
there is no spark coming from the coil there is no way that the fuel pump can stop the coil from sparking
 

Last edited by canc3r; May 28, 2010 at 01:34 PM.
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Old May 28, 2010 | 01:16 PM
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Hey, sorry for trying to help. I guess I need to work on my reading comprehension, since it couldn't have been your carefully worded, punctuated, spelled, and capitalized posts. Hope you get it fixed.
 
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Old May 28, 2010 | 01:37 PM
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i just did a voltage test on the coil supply plug and its on 8.5v coming from pos side. this seems off. it should be 12v right?
 
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Old May 28, 2010 | 03:09 PM
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im totaly baffled it seems im losing power somewhere between the icm and the coil there is 12v at the power supply for the icm and then at the coil i only get 8.5 the icm is bran new
 
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Old May 28, 2010 | 05:06 PM
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