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who reset their jeeps computer?

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Old Sep 17, 2012 | 09:11 AM
  #1  
black2000xj's Avatar
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From: Grand Haven, Michigan
Year: 1999
Model: Cherokee
Engine: 4.0 I6
Default who reset their jeeps computer?

if you did it, what results did you see

i did a google search on it...peoples "reviews" of doing it seem to be all over


If you did the computer reset, tell me what you noticed most about it?

improvements if any?

my jeep i just put a new cap/rotor, 7mm wires and plugs and new exhaust

drive like a old man and im getting 16, which isnt bad....but im curious if i can squeeze out another mpg or so..

let me knwo
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Old Sep 17, 2012 | 04:50 PM
  #2  
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From: Seal Beach, CA
Year: 1996
Model: Cherokee
Engine: 4.0 HO Straight Six
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You shouldn't need to flash the ECU with the repairs that you did. You won't see a difference doing that. All I notice when flashing the ECU for no reason is having to spend 3 minutes of my life resetting the radio presets.
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Old Sep 17, 2012 | 05:49 PM
  #3  
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From: San Antonio, TX
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I do it every time i change something performance wise or with the sensors. It allows the computer to learn how to use whatever the repair or mod rather than it using what youve done how it always has.

I just put in a new IAC and started it with out flashing the computer and she ran TERRIBLE. then i flashed it and she purred like a kitten. I think its totaly worth it to flash it
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Old Sep 17, 2012 | 05:53 PM
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From: Broward County Fl.
Year: 1989 xj sport 2dr
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Engine: 12 hole bosch Injectors
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The person that started this rumor laughs every time he sees it being done ...
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Old Sep 17, 2012 | 06:12 PM
  #5  
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Resetting your computer is not necessary for the vast majority of repairs. And for absolutely 100% certainty, not with replacing tuneup parts.

Last edited by tjwalker; Sep 17, 2012 at 06:48 PM.
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Old Sep 17, 2012 | 06:15 PM
  #6  
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From: Broward County Fl.
Year: 1989 xj sport 2dr
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Default BIG DIFFERENCE

https://www.google.com/search?hl=en&....1.IdN23EsBAMI
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Old Sep 17, 2012 | 06:48 PM
  #7  
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From: ☼ Blackhole Sun
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Mine seems to run alot better after everytime the GF flashes it.
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Old Sep 17, 2012 | 06:50 PM
  #8  
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Most repairs will not necessitate a computer reset. Even if you do have a repair that would subtly benefit, the computer will "learn" and reset itself over a period of time.

However, if you had transmission problems and you have resolved them with new components, it is recommended to reset the PCM. Because the PCM will have adapted shift schedules for a bad shifting transmission, when you have fixed it, that adapted shift schedule may result in bad shift points from a good transmission and transmission input signals. Its best to start with the baseline tuning for a trans that is shifting much differently than it did before.

Last edited by tjwalker; Sep 17, 2012 at 07:26 PM.
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Old Sep 18, 2012 | 06:17 AM
  #9  
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From: Grand Haven, Michigan
Year: 1999
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well i did it last night, jeep starts quicker, shift points in the trans are different...it shifts a different rpm's and they are slightly firmer

also notice more whistling noise from the CAI and throttle body

I noticed the overhead counsel for instant mpg....before it was showing 16.3 or near there..

after the reset i did, going the same speed, im in the 17's according to that...

so it must do something.....and i guess its not really hard to do so its worth doing....

and if you leave the negative cable on.....and just touch the positive to the a/c compressor, you dont loose your radio presets

say what you want i guess....it seemed to improve my jeep so far
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