2004 - 2008 F-150

Engine failsafe mode

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Old 11-26-2004, 05:20 PM
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Engine failsafe mode

Just wondering if anyone else has had there truck go into failsafe mode. My truck now has 11,000 miles and has gone into failsafe mode twice in the past four times i drove it. Its going to the dealer on monday but just wondering what to expect.
 
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Old 11-26-2004, 05:53 PM
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Mine went into failsafe mode 3 or 4 times during the summer. Took it to the dealer and they flashed the computer with a new program and its been fine ever since. 15000 KM now....
 
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Old 11-26-2004, 05:57 PM
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As much as it's an inconvenience, what if something were truly wrong and the failsafe just saved you an engine rebuild?
 
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Old 11-26-2004, 06:02 PM
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Was it normal driving when failsafe mode came on? Even so a new car shouldn't be overheating in the first place. I would be pissed off.
 
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Old 11-26-2004, 06:06 PM
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Mine has gone into failsafe mode once but that was because a spark plug decided to self destruct!
 
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Old 11-26-2004, 06:54 PM
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Had it happen once. The code indicated a hiccup in the throttle body assembly (to sensitive). They were just going to do a reflash, but they decided to make sure the problem didn't come back. They put on a new throttle body assembly and did the reflash. No problems since then.
 
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Old 11-26-2004, 07:06 PM
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Mine went into failsafe once this past summer. I took it to the dealer and they reflashed it with new code. It has been good ever since the reflash.

Ron
 
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Old 11-27-2004, 08:48 AM
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Its gone into failsafe right after startup. so i shut it off restarted and it went away. I have the superchips tuner 1714 and returned the truck to the stock program. If they do a reflash will my tuner still work or will it need an update from superchips?
 
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Old 11-27-2004, 09:48 AM
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Originally posted by deeluxe
Its gone into failsafe right after startup. so i shut it off restarted and it went away. I have the superchips tuner 1714 and returned the truck to the stock program. If they do a reflash will my tuner still work or will it need an update from superchips?
I read a post in the “Computer Chips” forum that referred to “failsafe” and custom tuning. It said that some trucks that had the PCM dealer re-flash didn’t work right and went into failsafe mode upon startup. Maybe this is your problem, I don’t know just throwing it out there for your information.
 
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Old 11-14-2005, 07:54 AM
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What the hell is failsafe mode?????????? I just drive my truck..I'm a noob...whatever happened to the days when you could just drive a vehicle??
 



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