Tachometer needle keeps bouncing

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Old Apr 23, 2013 | 12:08 AM
  #1  
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From: colorado springs
Tachometer needle keeps bouncing

what's up guys... i need help bad!

My tachometer needle keeps bouncing and the car stutters, especially when driving up hill. feels like the car is about to die on me....car is 06 TL AT supercharged.... any help will be great, thanks
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Old Apr 23, 2013 | 01:04 AM
  #2  
4drviper's Avatar
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is it just the needle or is your engine rev bouncing up and down...?

electrical gremlin?

or AT slipping like cray
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Old Apr 23, 2013 | 01:15 AM
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From: colorado springs
the whole car stutters like it's running out of gass...and rpm needle bouncing like crazy
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Old Apr 23, 2013 | 01:54 AM
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could you be misdiagnosing it for a misfire? any check engine lights?
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Old Apr 23, 2013 | 02:10 AM
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From: colorado springs
i was thinking misfire too... no check engine lights.... should i change out the spark plugs? flush out the tranny fluid?
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Old Apr 23, 2013 | 07:06 AM
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PLEASE dont take this the wrong way...
but you're supercharged and not really sure how to diagnose?!?!?!

please tell me you didnt install the supercharger your self?

these trannies are glass.
if you're pushing 50-60hp OVER stock, you're in for trouble.
matter of fact; the member UA6 supercharged his 06 auto and shortly after that went through 2 trannies.

Lets start off by giving the history of your car.
who installed it?
when did this start happening?
did you install any precautionary measures? like tranny cooler; meth, etc?

Your sig indicate that you have the high boost pulley.

without giving us any detail; all we are doing is guessing your problems.
you need to be clear an concise on whats happening with your car.
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Old Apr 24, 2013 | 09:42 PM
  #7  
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From: colorado springs
Acura installed the supercharger. had it tuned... bought the car in colorado, never had problems until i moved to maryland. only have 42000 miles on it ..... car is in the shop now, will give an update when i get it back.... thanks for the help though
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Old Apr 25, 2013 | 08:27 AM
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Was the car 'tuned' in Colorado presumably? Any idea what they used to tune it?

You don't see any problems with such a dramatic altitude drop? It's most likely running really lean.
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Old Apr 25, 2013 | 07:38 PM
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From: Los Angeles, CA
Originally Posted by ZOMGVTEK
It's most likely running really lean.
Good point. My guess was "sounds like a fuel delivery problem." Particularly since it only happens under heavy load (going up hills.)

Could turn into a big problem. With forced induction, "running really lean" is baaad...
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