Question on Idle Time Counter
Lead Driver
Joined: Jan 2010
Posts: 6,600
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Well, no one here has been able to figure out exactly how these trucks report idle time to the results that we see in a system check.
I thought the manual stated 1 hour of idle should be calculated to 25 miles of driving.
However, I cannot find that tidbit of info.
I thought the manual stated 1 hour of idle should be calculated to 25 miles of driving.
However, I cannot find that tidbit of info.
Posting Guru
Joined: Apr 2011
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It has to count low RPM in town driving as idle. I have about 25% idle time. That is just BS. There is something in the manual about the right %. Its Probably Ford setting the stage for improper maintenance or something because there is no way someone can be in the normal range unless you run the highways all the time. I don't sit around and idle.
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Senior User
Joined: Aug 2012
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From: New Hampshire
i am running about 24% idle time
Which if it based on 25 mph or less makes sense
so can I assume that if I take engine on time and divide that by engine idle
so 100 / 25 = .25
Then use that again current mileage between oil change
5000 x .25 = 1250 so this would be approx 6250 "miles" on the existing oil?
Does that make sense?
Is this a reasonable assumption or am i mixing apples and oranges?
Which if it based on 25 mph or less makes sense
so can I assume that if I take engine on time and divide that by engine idle
so 100 / 25 = .25
Then use that again current mileage between oil change
5000 x .25 = 1250 so this would be approx 6250 "miles" on the existing oil?
Does that make sense?
Is this a reasonable assumption or am i mixing apples and oranges?
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From: New Hampshire
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From: Roll Tide, Roll
Okay a tidbit of info from a field engineer on idle hours. I asked how there fiqured because where I life I see very few small towns and not much idle at all, but my hours dont add up.
He said that anytime the pcm sees the tps throttle position sensor in a idle position. If go up a hill it sees tps but if you are completely off the throttle going down the hill,it is adding idle time. It dont care what rpm engine is. Now this makes sense at least to me. Is he correct? I believe so.
Now this I can believe as I went on a fairly long trip almost all highway but rolling hills so on and off throttle. I could not believe the amount of idle hours it racked up. But. Then had to go on same trip loaded trailer.so it did not see much letting completly off throttle much and didnt show a increase in idke time.
He said that anytime the pcm sees the tps throttle position sensor in a idle position. If go up a hill it sees tps but if you are completely off the throttle going down the hill,it is adding idle time. It dont care what rpm engine is. Now this makes sense at least to me. Is he correct? I believe so.
Now this I can believe as I went on a fairly long trip almost all highway but rolling hills so on and off throttle. I could not believe the amount of idle hours it racked up. But. Then had to go on same trip loaded trailer.so it did not see much letting completly off throttle much and didnt show a increase in idke time.
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From: Sterling Heights, MI
Okay a tidbit of info from a field engineer on idle hours. I asked how there fiqured because where I life I see very few small towns and not much idle at all, but my hours dont add up.
He said that anytime the pcm sees the tps throttle position sensor in a idle position. If go up a hill it sees tps but if you are completely off the throttle going down the hill,it is adding idle time. It dont care what rpm engine is. Now this makes sense at least to me. Is he correct? I believe so.
Now this I can believe as I went on a fairly long trip almost all highway but rolling hills so on and off throttle. I could not believe the amount of idle hours it racked up. But. Then had to go on same trip loaded trailer.so it did not see much letting completly off throttle much and didnt show a increase in idke time.
He said that anytime the pcm sees the tps throttle position sensor in a idle position. If go up a hill it sees tps but if you are completely off the throttle going down the hill,it is adding idle time. It dont care what rpm engine is. Now this makes sense at least to me. Is he correct? I believe so.
Now this I can believe as I went on a fairly long trip almost all highway but rolling hills so on and off throttle. I could not believe the amount of idle hours it racked up. But. Then had to go on same trip loaded trailer.so it did not see much letting completly off throttle much and didnt show a increase in idke time.
Post Fiend
Joined: Jan 2009
Posts: 6,521
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From: Greenwood, SC
Okay a tidbit of info from a field engineer on idle hours. I asked how there fiqured because where I life I see very few small towns and not much idle at all, but my hours dont add up.
He said that anytime the pcm sees the tps throttle position sensor in a idle position. If go up a hill it sees tps but if you are completely off the throttle going down the hill,it is adding idle time. It dont care what rpm engine is. Now this makes sense at least to me. Is he correct? I believe so.
Now this I can believe as I went on a fairly long trip almost all highway but rolling hills so on and off throttle. I could not believe the amount of idle hours it racked up. But. Then had to go on same trip loaded trailer.so it did not see much letting completly off throttle much and didnt show a increase in idke time.
He said that anytime the pcm sees the tps throttle position sensor in a idle position. If go up a hill it sees tps but if you are completely off the throttle going down the hill,it is adding idle time. It dont care what rpm engine is. Now this makes sense at least to me. Is he correct? I believe so.
Now this I can believe as I went on a fairly long trip almost all highway but rolling hills so on and off throttle. I could not believe the amount of idle hours it racked up. But. Then had to go on same trip loaded trailer.so it did not see much letting completly off throttle much and didnt show a increase in idke time.
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