IS F (2008-2014) Discussion topics related to the IS F model

Dead zone on gas pedal

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Old 04-29-19, 03:28 PM
  #16  
Patrick76
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Originally Posted by lobuxracer
Actually the first thing you need to do is check the fluid level in the gearbox. All the symptoms you describe have been present on my car when the fluid level is just a little bit low - indecisive shifts, throttle lag especially going down hill on cold cycle, shift hangs after an aggressive turn, etc...setting the fluid level right made a HUGE difference in performance, especially when cold.

I'd bet money you're about four ounces low right now.
+1
I just replaced with new tranny fluid those symptoms got reduced and much improved.
specially the super charged sound also reduced.

Last edited by Patrick76; 04-29-19 at 03:36 PM.
Old 04-29-19, 05:17 PM
  #17  
Kron1ck
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Originally Posted by lobuxracer
Actually the first thing you need to do is check the fluid level in the gearbox. All the symptoms you describe have been present on my car when the fluid level is just a little bit low - indecisive shifts, throttle lag especially going down hill on cold cycle, shift hangs after an aggressive turn, etc...setting the fluid level right made a HUGE difference in performance, especially when cold.

I'd bet money you're about four ounces low right now.
We are on the same page with that... I stopped by Greg Japanese Auto today and got a quote on a transmission drain and fill for 148 . also rear diff for 180 you think that's too much. got a quote for a spark plug change And that hurts it's 438... I also got a quote for a full transmission change just in case for worse case scenario and that was 393.

I think that I should probably pull 1 of the plugs that's easy to get to and take a look at it so I can see if they have been done. So I can save that money if they don't need to be done .

I just don't know the service history of the car and want to make sure the car is running right mechanically before I start modding. I think it's the right way to go.

Thanks again to everyone who has tried to help me and give me advice. I'm on here reading trying to learn all that I can about this platform and what works and what's just a wast of time and money


Last edited by lobuxracer; 04-29-19 at 05:58 PM.
Old 04-29-19, 07:53 PM
  #18  
BlckGhst
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Lexus Drivers will give you service history by VIN
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