Matmag89: Check your TPS for the words DAE SUNG

dmtry: bad TPS causes unstable idle according to TSB by hyundai. Also with a bad TPS the problem may be hard to troubleshoot as it can just change position and send the wrong values.

http://www.rdtiburon.com/index.php?showtop...l=problem&st=20

 

^^^ Alright I'll try that.



<div class='quotetop'>QUOTE (Dmitry @ Jan 5 2006, 12:16 AM) <{POST_SNAPBACK}></div><div class='quotemain'>it's not your pump and it's not TPS.

have you checked engine compression?

probably you have dirty injectors (one may not spray gas and just pour it in the cylinder so it would be hard to fire).
Does your engine starts ok after you warmed up it (after you have driven it)?
Or do you have this problem only in the mornings or when you didn't start it for some long time (like a day+)</div>


I havent checked compression.

A while back I put injector cleaner through the car.

Sometime she starts up good after it warmed up, It happens even afer the motor has been shut off for a hour and a half or so.

 

Engine may start bad if compression is under 150 psi.

And injector cleaner may not clean injectors much and you cannot see the result of cleaning.
I would recommend ultrasonic creaning.