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03 f150 intermittent no start

  #16  
Old 07-07-2015, 09:49 PM
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Well....its not the fuel pump. I changed it out and dont really feel bad i did cuz it had 150k and maybe it would last another 50 or maybe it would have gone out next week.....anyway its not the problem. After having the same no start issue i moved around the relays in relay box under hood drivers side. Started up....made another stop and same issue...wiggled them again and it fired up. I think i heard one clicking...im not certain but i am guessing for whatever reason its not making proper contact. Will intigate further anf ud update when certain
 
  #17  
Old 07-07-2015, 10:04 PM
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Originally Posted by f250d4x4
Well....its not the fuel pump. I changed it out and dont really feel bad i did cuz it had 150k and maybe it would last another 50 or maybe it would have gone out next week.....anyway its not the problem. After having the same no start issue i moved around the relays in relay box under hood drivers side. Started up....made another stop and same issue...wiggled them again and it fired up. I think i heard one clicking...im not certain but i am guessing for whatever reason its not making proper contact. Will intigate further anf ud update when certain
Sorry for the wrong advice. Sure sounded like the fuel pump to me.
 
  #18  
Old 07-08-2015, 11:18 PM
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RMCCRIDE no worries man. Its guess work sometimes in cyberland. Im here and dont know for sure. I came here for ideas cuz its hard to diagnose something thats working...mostly lol.

I got a new fuel pump relay ...am told it controls juice to injectors as well. That would make sense as to why it never ran bad...just good or nothing...no sputter no nothing. Ill put it on tomorrow and see if it clears up. In the last day it messed up several times...not starting even after turning it over several times...but when i wiggled the relay it would start up. I dunno if its bad maybe a lose wire connecting to relay...i dunno well see.---fyi if a person has an issue they should be able to switch out relays if stranded.
 
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Old 07-09-2015, 12:02 PM
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I got a new fuel pump relay ...am told it controls juice to injectors as well
That is incorrect. The FPR runs the pump, nothing else. Power for the injectors comes from the PCM Power Relay.

You should probably inspect or even burnish the relay and socket contacts if moving the relay slightly caused an issue.
 
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