Bad/ or water in gas usually presents itself as missing or backfiring first, not just a dead stop.
I'm not a salesman for the outfit, but if you had a Scangauge attached you would know the problem within 2 minutes, as well as having a valuable trip computer available.
If you prefer, many engine code readers are available for about $100 or so from major auto parts retailers that will give you the same diagnostics.
Can't expect us humble folks who are directly plugged into your rig to do better than that.
Everyone else is just guessing.
'99 Glendale Royal Expedition 24' Class C
2003 Subaru WRX wagon as toad.
If you can reproduce the problem, there is probably a shrader valve somewhere on the fuel rail. If you bump the valve and you have good pressure but won't start, its not a fuel problem. Be careful where and how much fuel sprays out - we want you back to tell the end of the story.
Worst case scenario, wouldn't the IAC make it go into limp mode, rather than cut out completely? I realize this is Ford, but GM will not even go into limp mode with an IAC failure. IAC fails, it just won't idle, or will die when you let off the gas, because there is no ant-stall, but it will not make it cut out completely as described. If it really does cut out completely, then Ford needs to do some homework on thier FI. Yes, IAC does move around while your driving, but it should still go down the road fine without it. Just wouldn't idle.
Daveinet wrote: Worst case scenario, wouldn't the IAC make it go into limp mode, rather than cut out completely? I realize this is Ford, but GM will not even go into limp mode with an IAC failure. IAC fails, it just won't idle, or will die when you let off the gas, because there is no ant-stall, but it will not make it cut out completely as described. If it really does cut out completely, then Ford needs to do some homework on thier FI. Yes, IAC does move around while your driving, but it should still go down the road fine without it. Just wouldn't idle.
I had an IAC on a Jeep fail full closed and as soon as I let my foot off the gas she stalled and would not restart until I realized I had to keep the butterfly valve open with the gas pedal.
After you do all that has been recommended and you still have a problem, take it to a Ford facility and have them do a diagnostic test and perhaps that will give you a clue to what's causing your problem.
Daveinet wrote: Worst case scenario, wouldn't the IAC make it go into limp mode, rather than cut out completely? I realize this is Ford, but GM will not even go into limp mode with an IAC failure. IAC fails, it just won't idle, or will die when you let off the gas, because there is no ant-stall, but it will not make it cut out completely as described. If it really does cut out completely, then Ford needs to do some homework on thier FI. Yes, IAC does move around while your driving, but it should still go down the road fine without it. Just wouldn't idle.
I had an IAC on a Jeep fail full closed and as soon as I let my foot off the gas she stalled and would not restart until I realized I had to keep the butterfly valve open with the gas pedal.
Yes, of course. But the OP stated that he was driving, running 1700 RPM and it just quit, so we would assume that the throttle was open when it died. Also your IAC normally is open during driving and does not home unless the vehicle is shut off. I've run data log software ever since I installed the MPFI and have been watching it like a hawk. I've never seen my IAC go to zero except under initial start up.
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