o5 explorer, no start unless key cycled many times

[martini20708]

I have a 05 Explorer, it stalled out on me and now it wont restart normally. If i cycle to key from on to off 10-15 times it will start and run but, it dies soon after. I'm wondering if it is the pcm or the fuel pump or what it could be. Plz someone help I've already changed the spark plugs and ignition coil, as well as the fuel filter, plus the alternator too. oh and new battery too.

 

[fatherdoug]

I have a 05 Explorer, it stalled out on me and now it wont restart normally. If i cycle to key from on to off 10-15 times it will start and run but, it dies soon after. I'm wondering if it is the pcm or the fuel pump or what it could be. Plz someone help I've already changed the spark plugs and ignition coil, as well as the fuel filter, plus the alternator too. oh and new battery too.

May I ask why you attached a poll to a technical question?

 

[m78]

May I ask why you attached a poll to a technical question?

That was my first thought.

 

[smokey]

Get a fuel pressure guage and check the pressure with key on and while running.

 

[blacksnapon]

Get a fuel pressure guage and check the pressure with key on and while running.

BINGO!!!!!!!!!!!!!!!

 

[martini20708]

Well i was just see what certain thing did on this site and was just experimenting with the options , sorry.

 

[martini20708]

Get a fuel pressure guage and check the pressure with key on and while running.

If i get a fuel pressure gauge, where would I hook it up to, cuz for the life of me i can't seem to find the pressure check valve.

 

[martini20708]

also I cant get the engine to stay running un less i cycle the key on-off 20+ times an d then it still stalls out.

 

[blacksnapon]

If you get the gauge hooked up, you just need key on engine off (KOEO)

 

[martini20708]

ok but, where do i hook up the gauge?

 

[Fellro]

There should be a hookup on the fuel rail on the motor.

 

[blacksnapon]

I think on his, it's an electronic fuel rail pressure sensor (no Schrader valve). We have a tool that taps in to the fuel rail that has the valve on it.

 

[martini20708]

Well i checked to pressure and its saying 35 psi, till wont start.

 

[blacksnapon]

when you shut it off, does it hold pressure for 2 minutes, or does it bleed off?

 

[martini20708]

found out that it was my fuel pump and then my harmonic balancer, aka crank pulley .