2G GS-T Rough idle, bogging

[knieghtz]

The car idles at start between 1800 to 2000 RPM, i drove it around the block on 2nd gear at about 20 mph to warm up the engine (Just got the car, testing little by little) to see what would happen. When i parked it and left it in neutral, it started bogging between 1000 to 1500 RPM, it would drop slightly when i would turn on the head lights. I am very new to these cars so i dont even know where to start, any help would be greatly appreciated. THANKS!

 

[delta448]

Idle should be set at 650-850 rpm, 750 is the stock setting. If you're over 1500 at idle, you have an air leak big enough that the ISC cannot begin to compensate enough. Time to bust out the boost leak tester. Once you fix all the vacuum leaks behind the throttle body, take a good look at the idle adjustment VFAQ. Once you have it memorized, go to autozone and ask them to run the idle adjustment with their scan tool.

 

[arodgst]

Also, check your TPS sensor and where it sits, it could just be adjusted wrong or going out.

 

[knieghtz]

Thanks a lot guys. Once i do the test ill let you guys know. I really appreciate it!