01 Excursion abruptly stalls, intermittant
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01 Excursion abruptly stalls, intermittant
I have a 01 Excursion (6.8 gas) Recently it abruptly stalls, throws codes 720 and 722. These codes are OSS sensor (Trans Output Shaft Sensor) And loss of OSS signal.(#722) (The Only codes that get stored)
Although the OSS tested good it was replaced. The problem is Intermittent, it may do it 3 X a day, or not for a week, then do it once. It always starts up after the stall out. Has not stalled at speed, only when your accelerating, leaving a stop sign, or light.
The plug (to OSS), and associated harness was inspected, no corrosion or damage found. The Crank and cam sensors were checked (although they did not "code"), and passed fine. Fuel pressure checks "OK" No notable change in fuel consumption.
has been to dealer, problem still exists. Dealer said no TSB's or "OASIS" notes on these symptoms.
Has anyone had this problem on a Excursion or Superduty and gotten a resolution?
Any Ford Techs have any ideas? It seems to be getting worse, in terms of frequency.
Although the OSS tested good it was replaced. The problem is Intermittent, it may do it 3 X a day, or not for a week, then do it once. It always starts up after the stall out. Has not stalled at speed, only when your accelerating, leaving a stop sign, or light.
The plug (to OSS), and associated harness was inspected, no corrosion or damage found. The Crank and cam sensors were checked (although they did not "code"), and passed fine. Fuel pressure checks "OK" No notable change in fuel consumption.
has been to dealer, problem still exists. Dealer said no TSB's or "OASIS" notes on these symptoms.
Has anyone had this problem on a Excursion or Superduty and gotten a resolution?
Any Ford Techs have any ideas? It seems to be getting worse, in terms of frequency.
Posting Guru
Joined: Sep 2008
Posts: 2,498
Likes: 2
Sounds like a fuel filter.
Also the key switch may be the problem.
If the fuel fliter hasn't been changed in the last 5000 miles I would have it changed first.
Check mass air flow electrical connections and clean.
Also the key switch may be the problem.
If the fuel fliter hasn't been changed in the last 5000 miles I would have it changed first.
Check mass air flow electrical connections and clean.
Sit. Stay.
Joined: Oct 2001
Posts: 18,308
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From: Washington State
I cannot remember how that sensor installs. It is possible that its housing or surrounding area is cracked??
Seems to me that the torque produced at take-off is enough to get it to shift and not get a good "contact" to make a complete signal. That; or the wires are indeed chafed somewhere and that same torque action is causing a short.
I would see if you can determine where that sensor grounds to as well. Could be a loose ground.
Seems to me that the torque produced at take-off is enough to get it to shift and not get a good "contact" to make a complete signal. That; or the wires are indeed chafed somewhere and that same torque action is causing a short.
I would see if you can determine where that sensor grounds to as well. Could be a loose ground.
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