my 1JZ lack of power... HESITATE....

[desmd99]

hi guys, i need help here. My 1JZ seems lack of power, when i put more pressure on gas pedal, the engine doesnt response at all, when I continue pressing gas pedal, the engine started choking ..... sounds like misfiring. what could be my problems? I was told the it could be TPS or low on fuel pressure due to dirty filter or spark plugs.

any comment?

 

[tlo86]

so pressing pedal = car still idles?

 

[desmd99]

yes, the car idle fine, if i press gas pedal, the motor will rev smoothly.

 

[OneJoeZee]

Check your MAP sensor vacuum line.

 

[2543arvin]

Drop a 7m in there!.....lol, just kidding. Its rare to see a thread with a jz motor lacking power, so I had to do it!

 

[desmd99]

ok... i found some vacuum is not connected but i dont know what it is and have no idea where they go. I will take pic, pls show me...

BTW, 1JZ MAP sensor=turbo pressure sensor?