Resetting Computer
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Member
Joined: Oct 2002
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From: Morgantown, WV
Resetting Computer
Three questions.
2002 F150 Supercrew 5.4
(1) I was wondering if anyone knows how long (miles, etc) it takes the computer to relearn driving habits and change the shifting points, etc. after resetting the computer.When I bought my truck it had 35 miles on it . I'm wondering if this was anough miles that the computer learned some "bad habits." We all know how people test drive vehicles they are looking at buying.
(2) Will the change be noticable or is there a very small margin that the computer is allowed to adjust for different driving habits.
(3) what's the best way to drive during this learning period. Aggressive, conservative, normal, etc. It seems my truck shifts out of 1st before i can get out of my driveway which is approx. 300 feet up a 30 to 40 percent incline.
PS. Just for record I now have around 2900 miles and yes i do have the dreaded low speed transmission thunk. What I mean, is driving through town 15 to 20 mph let off gas cruise a little then normal acceleration to keep up with traffic "thunk". I know a little slop is needed, but this is ridiculous.
2002 F150 Supercrew 5.4
(1) I was wondering if anyone knows how long (miles, etc) it takes the computer to relearn driving habits and change the shifting points, etc. after resetting the computer.When I bought my truck it had 35 miles on it . I'm wondering if this was anough miles that the computer learned some "bad habits." We all know how people test drive vehicles they are looking at buying.
(2) Will the change be noticable or is there a very small margin that the computer is allowed to adjust for different driving habits.
(3) what's the best way to drive during this learning period. Aggressive, conservative, normal, etc. It seems my truck shifts out of 1st before i can get out of my driveway which is approx. 300 feet up a 30 to 40 percent incline.
PS. Just for record I now have around 2900 miles and yes i do have the dreaded low speed transmission thunk. What I mean, is driving through town 15 to 20 mph let off gas cruise a little then normal acceleration to keep up with traffic "thunk". I know a little slop is needed, but this is ridiculous.
Last edited by Dareford; Jan 7, 2003 at 01:03 PM.
Senior Member
Joined: Mar 2000
Posts: 1,740
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From: SE Florida, USA
The computer does not learn driving habits. Ever. Not in a billion miles.
What it does learn is how long a shift takes from when the PCM asks for a gear until the shift has completed. It will adjust the pressure for the next shift to try and make the shift length as close to ideal as possible.
It can't learn bad habits from some other driver.
What it does learn is how long a shift takes from when the PCM asks for a gear until the shift has completed. It will adjust the pressure for the next shift to try and make the shift length as close to ideal as possible.
It can't learn bad habits from some other driver.
Senior Member
Joined: Dec 2002
Posts: 1,558
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From: Eastern TN
Although the computer does not learn "habits", it does learn many variables regarding the operational environment of the truck.
Fuel octane, air flow, shift points, etc. are constantly analyzed and adjusted for.
I believe that Ford states it takes up to 200 miles of driving for the computer to "settle" into a consistent operational mode.
I have read articles that mention the fact that some unscrupulous companies make parts that will cause the engine to deliver more power, but the computer actually "learns" the change made and the original power boost will eventually go away...
You can see more regarding this on the Grannatelli Motorsports web site...
http://www.granatellimotorsports.com
Fuel octane, air flow, shift points, etc. are constantly analyzed and adjusted for.
I believe that Ford states it takes up to 200 miles of driving for the computer to "settle" into a consistent operational mode.
I have read articles that mention the fact that some unscrupulous companies make parts that will cause the engine to deliver more power, but the computer actually "learns" the change made and the original power boost will eventually go away...
You can see more regarding this on the Grannatelli Motorsports web site...
http://www.granatellimotorsports.com
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Joined: Oct 2002
Posts: 18
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From: Morgantown, WV
Thanks for all of the informative posts.
So if I understand this correctly, I will see little or no improvement by resetting the computer and If so it would eventually return to the point it is now, over time.
Is there anything else to look at that might have contributed to the quick shift into second. I'm fairly sure when I purchased it, it didn't do this. Maybe it did and I was to focused on other things to notice.
Would the "Flash Update" help or should I just look into a valvebody upgrade or even possibly and new computer chip to help with fuel mileage as well. (have recorded all fuel since purchase. have gone from 11.6/11.9 average down to 9.9/10.2 average.
Thanks again for the replies.
So if I understand this correctly, I will see little or no improvement by resetting the computer and If so it would eventually return to the point it is now, over time.
Is there anything else to look at that might have contributed to the quick shift into second. I'm fairly sure when I purchased it, it didn't do this. Maybe it did and I was to focused on other things to notice.
Would the "Flash Update" help or should I just look into a valvebody upgrade or even possibly and new computer chip to help with fuel mileage as well. (have recorded all fuel since purchase. have gone from 11.6/11.9 average down to 9.9/10.2 average.
Thanks again for the replies.
Senior Member
Joined: Mar 2000
Posts: 1,740
Likes: 22
From: SE Florida, USA
If there is an update the dealer can install it.
The best thing to do is tell the dealer what your complaint is. They may have a fix for it.
Most likely that is the way it is. When the transmission shifts is a big input for fuel economy and emissions, both of which are government regulated items. It isn't likely that the dealer will have anything available to them to change it, but it wouldn't hurt to ask.
Changing the valve body won't help. The computer controls when to shift, not the valve body.
The best thing to do is tell the dealer what your complaint is. They may have a fix for it.
Most likely that is the way it is. When the transmission shifts is a big input for fuel economy and emissions, both of which are government regulated items. It isn't likely that the dealer will have anything available to them to change it, but it wouldn't hurt to ask.
Changing the valve body won't help. The computer controls when to shift, not the valve body.