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Stock 99 runs like crap below 3000rpm

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Old May 15, 2012 | 06:53 PM
  #1  
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Default Stock 99 runs like crap below 3000rpm

Does it in all situations. Hot. Cold. Light throttle. Wot.

No CELs.

Above 3000 it is totally happy.

By runs like crap i mean consistently misses and stumbles.

Please help me fix my daily.
Old May 15, 2012 | 07:12 PM
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check timing?

did you put gas in it? if that one gauge on the left points at the E then there is your problem...
Old May 15, 2012 | 08:59 PM
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Spark plug wires? Although when my car used to cook mine, it would only stumble as it revved passed a certain rpm, usually between 3000-4000rpm. Worth a shot, we all know you like throwing money at your car.
Old May 15, 2012 | 10:28 PM
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Its funny because this sounds kinda like my problem but mine was 2000-2500 rpm. But my problem was anything above 50kpa load between 2k-2.5k and i was running E85 that had stayed there for a week without being touched. A member on miatanet said it was E85 going bad... problem disappeared halfway through the new tank.
Old May 15, 2012 | 10:35 PM
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You need to throw more turbo at it...that and a sawzall.
Old May 15, 2012 | 10:44 PM
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U gays rnt helping.

I am thinking it is due to some VVICSTS bullshi. All vac lines liok ok though. Opinins?
Old May 15, 2012 | 10:47 PM
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Vics dont do shi t at 3k rpm as far as drivability goes buu.
Old May 16, 2012 | 12:06 AM
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Coil packs?
Old May 16, 2012 | 12:48 AM
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Unplug whatever we're calling the intake air sensor and see if it behaves differently. I recently had a chaffed wire on my daily and had a similar symptom. I'm guessing it's a spark relate problem.
Old May 16, 2012 | 01:33 AM
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Originally Posted by Savington
Coil packs?
Why would it only misfire at low rpm though?

I will try unpluggin ait sensa
Old May 16, 2012 | 08:23 AM
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maybe 3k is the switchpoint for CL/OL and a bad sensor is causing it to freak out in CL?
Old May 16, 2012 | 08:48 AM
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Originally Posted by 18psi
maybe 3k is the switchpoint for CL/OL and a bad sensor is causing it to freak out in CL?
Wouldnt this throw a CEL though?
Old May 16, 2012 | 09:01 AM
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Have you hooked up an OBDII scanner to watch what is going on with everything while this is happening?

I have a bluetooth OBDII adapter that I use with the app "Torque" on my phone and it allows me to monitor everything that is going on.
Old May 16, 2012 | 07:05 PM
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Originally Posted by shuiend
Have you hooked up an OBDII scanner to watch what is going on with everything while this is happening?

I have a bluetooth OBDII adapter that I use with the app "Torque" on my phone and it allows me to monitor everything that is going on.
WTF is this OBDII scanner thing. Seriously, I have never heard of it.

I guess I can get one loaned from autozone or something? Or no?...
Old May 17, 2012 | 01:58 AM
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Originally Posted by Faeflora
WTF is this OBDII scanner thing. Seriously, I have never heard of it.

I guess I can get one loaned from autozone or something? Or no?...
Yes, Vatozone will help you.
Old May 17, 2012 | 09:40 AM
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Originally Posted by Faeflora
WTF is this OBDII scanner thing. Seriously, I have never heard of it.

I guess I can get one loaned from autozone or something? Or no?...
The cheap OBDII scanners just hook to the OBDII port and read codes, the expensive ones can read all the data that the ECU outputs. I bought
this this
bluetooth OBDII adapter for my pickup truck. I then use https://play.google.com/store/apps/details?id=org.prowl.torque&hl=en app on my phone as an interface for the adapter.
Old May 17, 2012 | 11:06 AM
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Droid only app?
Old May 17, 2012 | 11:44 AM
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I'm not a droid plebe.

i ball out with my iPhone 4s s for u iz suckaz
Old May 17, 2012 | 11:54 AM
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Originally Posted by thirdgen
Droid only app?
Torque is droid only.

Originally Posted by Faeflora
I'm not a droid plebe.

i ball out with my iPhone 4s s for u iz suckaz
Except your iPhone 4s has shitty blue tooth api's so developing blue tooth apps is next to impossible. So they are not exactly baller.

There might be other OBDII software for the iphone, I have never looked and have no desire to.

Last edited by shuiend; May 17, 2012 at 01:00 PM.
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