Pickup cranks normally but won't start. '07 F150

[andersonjk4]

Now that I have my pickup somewhere quiet. I can hear the fuel pump much better. It makes a pretty loud clunk or thud when it first kicks on and then gives a little chirp or squeal when it turns off. Is this an indication it may have gone bad? Is the best way to test the fuel pump by measuring fuel pressure? I have been unable to locate a Schrader valve on the fuel rail.

[syoungs]

You will need a code reader that can read live data to check fuel pressure easily, or rig a gauge off the fuel filter. It shouldn't be making those sounds.

Did you look into the fpdm? Only takes about 10 minutes to check it. Lots of problems with them corroding out on the backside.

[andersonjk4]

You will need a code reader that can read live data to check fuel pressure easily, or rig a gauge off the fuel filter. It shouldn't be making those sounds.

Did you look into the fpdm? Only takes about 10 minutes to check it. Lots of problems with them corroding out on the backside.

I just read up on the FPDM issues and am going to go out and check it right now. Is there any for sure way of telling it is bad without replacing it?

[andersonjk4]

I just pulled the FPDM off and it looks slightly corroded but not bad. I still am going to have my wife pick a new one up in town just to check it.

[jackelope]

Did you try a shot of gas down the throttle body to see if it is even a fuel issue? Some starting fluid would work as well. Just a little bit. I suspect it's a fuel pump only because of the commonality of them going bad. Just curious though. The FPDM issues should set a fault code.
I agree the pump shouldn't be making those noises.

[Happy Gilmore]

Fuel pump won't usually set codes.

Is there a tech who doesn't plug a car in first anymore?

[jackelope]

Fuel pump won't usually set codes.

Is there a tech who doesn't plug a car in first anymore?

Not really. Pretty much step 2 of the diagnostic procedure.

[syoungs]

I just pulled the FPDM off and it looks slightly corroded but not bad. I still am going to have my wife pick a new one up in town just to check it.

If you wanna wait a couple days I'll send you my spare, so you don't have to purchase one. Usually they are pretty obviously shot, like holes in them and such, but it's possible for the mosfrt controllers to go out, just rare.

[biggfish]

Can't say much to new full size Fords as I have an old ranger, my dad had an 08 ram and it had low voltage from a bad battery wouldn't allow the fuel injectors to spray enough fuel no code at first. After I got it on a booster and running it spit codes after I disconnected the booster. The sounds you described are off for sure but have you verified that there is spark. Crank and no start is the biggest pain to run down but the basics air, fuel, spark are the first checks till make before throwing parts at it.

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[hunter399]

Fuel,spark,air,back to the basics

That's what I said on page 1, now I'm quoted myself
If you have spark , then I'm also saying fuel pump,the sounds your saying it makes doesn't sound good.Dropping the gas tank is not fun,but easy after you have done it a few times,You can also check your wires going to fuel pump ,make sure it's got a good ground,and all plugged in with good connection no bare wire nothing like that.

[andersonjk4]

All good advice here. I appreciate all the insight. It is not the FPDM I got a new one and plugged it in with no change. I have been going down the route of fuel delivery because I can feel compression out the exhaust pipe but there is no odor of gas either out the exhaust or under the hood even when I have tried cranking it several times in a row. I know it's not battery related. I just bought a brand new Mototcraft battery a couple months ago and it's been really strong. It has held up to multiple cranking sessions over the last couple days and just started to wear down this afternoon. My next mission will be too verify spark. And then try and measure fuel pressure. And also try tracking down wires. Since we moved out to the boonies last year I have noticed some mouse activity in the engine compartment, so I'm worried about chewed wires which could be a nightmare to track down.  I just wish life would slow down and let me have a little uninterrupted time to work on it.

[syoungs]

If the fuel pump is the same as the f250 v10 (pretty sure it is), I might have a brand new pump you can have. Bought one that was bad out of the box from schucks, gonna go warranty it tomorrow, already bought a whole new fuel pump module for mine after some time of hair pulling and a couple times coming home on a hook.

[shadowless_nite]

I'm no ford guy, but I did have a dodge do this to me....

I drove my 06 ram 1500 home after work 2 miles away. Grabbed the kids and was back out the door in 10min of parking. Jump in and no start! Nothing, no smell of fuel and missing. First attempt started for a second then died and then just cranked... sounds just like your situation. Had fuel in the tank and was nose up even so I know I was safe from that....

Turns out the key immobilizer decided to die in the remote and loose it's memory. The key would still lock/unlock the doors and turn on all truck functions in the key ON position but just crank for days. Without the immobilizer signal it would cut fuel as a anti theft and wouldn't let it start. I know early 2000s was the dawn of immobilizer systems but I'm not a domestics guy and only know toyotas and Hondas and they've done the same.

If you have a immobilizer key I would try a spare and see what happens. It's not uncommon in today's car problems and it's symptoms are as you describe

[andersonjk4]

Shadowless - thanks for the advice. I have already tried my spare and it didn't work either. Something to do with the antitheft was my first thought when it happened, but it is not showing any of the signs that any antitheft measures have been activated.

[jackelope]

you know you have power to the pump. Do you have any fuel at the rail? Did you try a little shot of gas down the throttle body? That'll eliminate a "no spark" concern in about 30 seconds. I'm not a fan of shotgunning parts but I'd almost guarantee you you need a fuel pump. Maybe you can rent a fuel pressure gauge from napa or something. I don't know. But if it was mine, and seeing what I see literally every day of my life, I'd be replacing the fuel pump.  I bet we do 3 or so fuel pumps a week on F150's of that vintage.