Need help on a crank no start issue
#1
Need help on a crank no start issue
I have a 2010 4.6 f150 supercrew 4x4. Within the last month it has done the following about 4 times. It will start and run fine then randomly will crank but to start. You cannot hear the normal hum of the fp. Tried tapping on the tank with the mallet to no avail. Let it sit over night and it will usually start. Second to last time I had it towed to mechanics house and once unloaded off the tow truck it fired up and he could not get the "issue" to happen again. He found no codes showing any issues. Took the truck back and it ran fine for a week started just fine every day multiple times a day then all of a sudden wouldn't start again, let it set over night started up so I could get it home. Like an idiot I shut it off once home and went back an hour later and it wouldn't start and did not for 2 days straight. Had it towed again to mechanics house and once unloaded it starts fine and has for 2 days straight. Any advice please, this is about to make me lose my mind and set this thing on fire and collect the insurance. Lol. I'm not mechanical at all but don't feel like dropping $6-700 bucks on fuel pump and fp drivers module if there's something else I can do. Thanks in advance for any help
Last edited by Pdutton; 12-16-2014 at 07:36 PM.
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Join Date: Oct 2002
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#8
I changed the fpdm and made sure all connections were good. Truck started fine for a day but then the no start issue happened again. Checked all the fuses and they are fine and the fuel pump relay is working. I'm at my wits end and don't want to pay the boys at the ford dealership the kings ransom they will demand. Any other suggestions would be greatly appreciated.
#9
#11
First - the OP does not have 'an older car'.
Second - if you distrust 'electronic crap' so vociferously, ye's best sell all yer trucks, as both are chock-full of same. As is yer house. Get a horse and buggy, or a bicycle and go live in a cave.
Good grief - surrounded by Luddites
OP - best of luck - dealer IDS diags may be yer best recourse. It may be cheaper (and less stressful) than throwing parts at it at the end of the day.
Regards;
MGD
#12
Of what possible help is this?
First - the OP does not have 'an older car'.
Second - if you distrust 'electronic crap' so vociferously, ye's best sell all yer trucks, as both are chock-full of same. As is yer house. Get a horse and buggy, or a bicycle and go live in a cave.
Good grief - surrounded by Luddites
OP - best of luck - dealer IDS diags may be yer best recourse. It may be cheaper (and less stressful) than throwing parts at it at the end of the day.
Regards;
MGD
First - the OP does not have 'an older car'.
Second - if you distrust 'electronic crap' so vociferously, ye's best sell all yer trucks, as both are chock-full of same. As is yer house. Get a horse and buggy, or a bicycle and go live in a cave.
Good grief - surrounded by Luddites
OP - best of luck - dealer IDS diags may be yer best recourse. It may be cheaper (and less stressful) than throwing parts at it at the end of the day.
Regards;
MGD
#13
Join Date: Apr 2009
Location: In the fast lane from LA to Tokyo...
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Suggestions.....
Check ground strap on pcm
Ignition mobilizer or keys....mark one side of Yer key... Try one side then flip it and try the other....sensor in column might have loose /broke connection
Also check the fuel pump relay in the engine compartment junction box
Worst cause Yer truck is running rich....clean the maf and throttle body....this should be done periodically as routine maintenance too
Check ground strap on pcm
Ignition mobilizer or keys....mark one side of Yer key... Try one side then flip it and try the other....sensor in column might have loose /broke connection
Also check the fuel pump relay in the engine compartment junction box
Worst cause Yer truck is running rich....clean the maf and throttle body....this should be done periodically as routine maintenance too
Last edited by 88racing; 12-23-2014 at 10:31 AM.
#14
The suggestions so far are chasing fuel related potential problems. I was simply trying to point out that it could be ignition related. An engine needs spark as well as fuel to run. Whether it is an ignition module or the PCM something provides the primary voltage to the coils. It's the same principle.
Last edited by Roadie; 12-23-2014 at 10:48 AM.
#15
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If the symptom is a "crank but no start: .AND. he cannot hear the fuel pump run during it's priming cycle, he doesn't have an ignition problem, he has a "no fuel delivery" problem.
All his symptoms are consistent with a fuel pump on its last legs but none of the information provided is 100% definitive.
Thanks for playing.
All his symptoms are consistent with a fuel pump on its last legs but none of the information provided is 100% definitive.
Thanks for playing.