MY CAR IS A GT 2

  • Tiny
  • Kat_Henson
  • 2003 Hyundai Tiburon
  • 120 miles

My car is a GT 2.7L 6-speed and it doesn't feel like its pushing full horsepower. Also, when it reaches normal temp it idles a bit rough. Like a slight shudder you can see looking at the engine and feel sitting in it. But the rpms don't move. When driving, I take my foot off the gas to coast and when I depress the gas again (not flooring it :) ) the car jolts. It feels like when you catch a gear hard when shifting. There is no check engine light and no codes.
What I've done so far: new plugs (ngk iridiums), wires, TPS, fuel filter, air intake hose, air filter, cleaned the throttle body, MAF sensor, and IAC valve. I went to Valvoline and had the full fuel system cleaning and just got an oil change. This is driving me crazy! Any help is incredibly appreciated.

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Saturday, November 10th, 2012 AT 1:11 AM

2 Replies

  • Tiny
  • Kat_Henson
  • Member

Should say 120k miles. Sorry!

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Saturday, November 10th, 2012 AT 1:13 AM
  • Tiny
  • DrCranknWrench
  • Expert
  • 3,458 posts

I am giving you a walk through diagnostic for your situation. Just use the link below to get to it;

http://www.2carpros.com/articles/engine-has-low-power-output

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Saturday, November 10th, 2012 AT 1:21 AM

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