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2009 Lancer GTS RPM Loss

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Old Sep 15, 2014 | 10:58 AM
  #1  
Midnightswammi's Avatar
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From: Riverside CA
2009 Lancer GTS RPM Loss

Hello: First time poster, and I'd like to first thank you for taking time to read this post.

Currently at 78k miles on my 2009 Lancer GTS Octane Blue baby, What I have noticed is a loss of performance, I usually always do synthetic oil chances, oil filter every 3k-4k miles. When my AC is on, the flow isn't as strong and now when I rev to get at faster speeds especially on the freeway, there is a lag and I can hear a stronger rev noise coming from the middle panel underneath the dashboard (Audio Red Yellow Plug area.) Also my gas milage is lower.

I Cleaned my throttle body
Use SeaFoam every 6k

Haven't been to a mechanic yet , but my cousin who is a technician at a lexus dealership said it could possibly be the air compressor.


Description of problems:

-Loss of RPM

-Lag of shift gears and have to push pedal harder to get to faster speed.

-Gas HWY mileage from 30-34 mpg, now about 20-28 depending on speed.

-A/C Water leaks always when I put AC on, (Over condensation?)

-Louder Rev coming from engine bay more than usual to get to faster speed.
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Old Sep 3, 2015 | 08:57 AM
  #2  
Rio001's Avatar
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Joined: Mar 2015
Posts: 1
Likes: 0
From: Texas
Need help!

Originally Posted by Midnightswammi
Hello: First time poster, and I'd like to first thank you for taking time to read this post.

Currently at 78k miles on my 2009 Lancer GTS Octane Blue baby, What I have noticed is a loss of performance, I usually always do synthetic oil chances, oil filter every 3k-4k miles. When my AC is on, the flow isn't as strong and now when I rev to get at faster speeds especially on the freeway, there is a lag and I can hear a stronger rev noise coming from the middle panel underneath the dashboard (Audio Red Yellow Plug area.) Also my gas milage is lower.

I Cleaned my throttle body
Use SeaFoam every 6k

Haven't been to a mechanic yet , but my cousin who is a technician at a lexus dealership said it could possibly be the air compressor.


Description of problems:

-Loss of RPM

-Lag of shift gears and have to push pedal harder to get to faster speed.

-Gas HWY mileage from 30-34 mpg, now about 20-28 depending on speed.

-A/C Water leaks always when I put AC on, (Over condensation?)

-Louder Rev coming from engine bay more than usual to get to faster speed.



Did you get your issues resolved, I'm going through the same symptoms as well.
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Old Sep 4, 2015 | 06:52 AM
  #3  
Veronica's Avatar
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Joined: Jan 2010
Posts: 2,624
Likes: 33
From: Chesapeake Beach, MD
Take the accy belt off and see if you can spin the ac compressor by hand. No? Bad Compressor

Put belt back on - run engine - turn on ac and listen at compressor for excessive noise. If so - bad compressor.
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