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  #1  
Old 08-29-2012, 10:55 PM
doyouquaxu doyouquaxu is offline
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Default Intermittent crank but no start

2005 auto, 114k miles. intermittent crank no start scenario. doesn't matter if the truck has been sitting over night, been off for 10 minutes, or sitting for 8 hours at work in the hot sun. doesn't happen every time, i just have to be lucky.

fuel pump new from ford w/in 1 year
fuel filter new w/in 3 months
new coil
new crank position sensor
new cam position sensor (not the bit that connects to the cam, just the sensor on top)
new fuel pump relay
MAF and IAC just cleaned

when it cranks, i can press the gas pedal and that doesn't make it start, which rules air out. fuel pump kicks on and it gets pressure. with a new coil, crank and cam sensors, what else could it be? plug wires have around 70k on them, they're next to be replaced.

no CEL, no codes, never runs rough.

searching (been at it for a week, hence the list of shit that's been already replaced) turned up nothing i haven't tried.
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  #2  
Old 08-30-2012, 12:52 AM
tacho19871987 tacho19871987 is offline
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R u gettin any spark though?

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  #3  
Old 08-30-2012, 12:53 AM
RangerEdgeWhite RangerEdgeWhite is offline
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Default Re: Intermittent crank but no start

have you tried the reset button on the passenger side by the firewall?
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  #4  
Old 08-30-2012, 01:13 AM
tacho19871987 tacho19871987 is offline
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Quote:
Originally Posted by RangerEdgeWhite
have you tried the reset button on the passenger side by the firewall?
Inertia switch?

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  #5  
Old 08-30-2012, 10:04 AM
doyouquaxu doyouquaxu is offline
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Default Re: Intermittent crank but no start

Quote:
Originally Posted by RangerEdgeWhite View Post
have you tried the reset button on the passenger side by the firewall?
the inertia switch for the fuel pump that i can hear kicking on, and that would keep me from getting the fuel pressure that i have? that one?
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Old 08-30-2012, 10:35 AM
tacho19871987 tacho19871987 is offline
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It cant be the inertia switch, there would be no power to the fuel pump. So do you have spark?

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  #7  
Old 08-30-2012, 06:48 PM
doyouquaxu doyouquaxu is offline
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Default Re: Intermittent crank but no start

yes i know it's not the inertia switch since my fuel pump works and it builds pressure.

and i do have spark.
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Old 08-31-2012, 08:41 PM
RangerEdgeWhite RangerEdgeWhite is offline
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Default Re: Intermittent crank but no start

Quote:
Originally Posted by doyouquaxu View Post
the inertia switch for the fuel pump that i can hear kicking on, and that would keep me from getting the fuel pressure that i have? that one?
yeah, this happened to me before what i did was remove the battery terminals and cleaned them off with WD40 and put them back on and it started, this may not be the problem but it helped me when my truck wouldnt start, it may also be that your Positive cable is corroded inside.
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  #9  
Old 09-01-2012, 04:52 PM
tacho19871987 tacho19871987 is offline
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Have u gotten the fuel pressure checked? I know u already replaced the pump, but i believe its a fuel problem.

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  #10  
Old 09-01-2012, 04:57 PM
doyouquaxu doyouquaxu is offline
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Default Re: Intermittent crank but no start

figure out my stupid problem. one of my spark plug wires was rubbing on the trans dipstick tube (way to go ford!) and wore through the jacket enough to arc. found it last night when checking again for spark.
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  #11  
Old 09-09-2012, 03:19 PM
doyouquaxu doyouquaxu is offline
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Default Re: Intermittent crank but no start

i think i'm going to shoot my truck. thought it was the plug wires, but that wasn't it.
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Old 09-10-2012, 11:23 AM
doyouquaxu doyouquaxu is offline
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Default Re: Intermittent crank but no start

i'm leaning towards it being the fuel pump again! just replaced it with a ford unit in july 11. pretty fucking pissed that $350 only got me about 15 months of use.
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  #13  
Old 09-10-2012, 11:39 AM
Stinkbaitj Stinkbaitj is offline
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Quote:
Originally Posted by doyouquaxu
i'm leaning towards it being the fuel pump again! just replaced it with a ford unit in july 11. pretty fucking pissed that $350 only got me about 15 months of use.
No waranty?

--1993 ford ranger ext cab 3.0 v6--
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  #14  
Old 09-10-2012, 11:44 AM
doyouquaxu doyouquaxu is offline
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Default Re: Intermittent crank but no start

1 year, lucky me!
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  #15  
Old 09-10-2012, 12:08 PM
FordRanger4x4 FordRanger4x4 is offline
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Default Re: Intermittent crank but no start

Get a can of carb. cleaner and take your air cleaner duct loose. Spray some carb. cleaner in while cranking the engine, if it starts you have a fuel problem.
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