Just started this past week, cranks, but wont start. turn key off and back to start, then fires. some times I need a couple tries.

Is there a known issue I can look at first?

Besides fuel pump, what else could the issue be?

05 STX 4x4 - 4.6L - auto

Ken

 

do the search for the fpdm or fuel pump driver module. its back by the spare tire mounded on a crossmember. it is aluminum and is a very known problem. replace it if you plan on keeping the truck

 

Mine did that a couple times before the battery went south.

- NCSU

 

Check this out>>>https://www.f150online.com/forums/ar...highlight=fpdm
AND

Get your battery checked also...

 

I will check the FPDM this weekend, thanks for the tip!

As for the battery, It is original, so I have no problem with changing it. But it cranked over without issue, not showing signs of being weak.

I thought about a crank or cam position sensor... no clue where they are even located or how difficult to change. I know they usually are a cheap part.

I just bought the spark plug removal tool... I have yet to change the plugs on my truck... embarrasing to say, it has 199,000 miles on it.

Ken

 

after reading this i had to go out and check my fpdm, its still good

 

Like has been said in the thread you jumped into, the tool does not apply with a 4.6.

Go get the battery load tested - Autozone can do that in the vehicle and it takes about 2 minutes, and it's free.