Howdy,

I have a manual 2002 Elantra GT. I recently had diagnosed (AutoZone read the codes) misfires in cylinder 2. I fixed that by starting with the plugs, then wires, but ultimately a new coil was the solution. I also (still) have high RPMs at idle and when I push in the clutch. The RPMs will vary from 1.5 to 3K after it is at operating temp. Looking around the forum I've read about similar problems and suggestions to replace the TPS.
The check engine light is not on so I'm reluctant to take it in to the dealer without giving them something to go on. I can replace the TPS but shouldn't there be a code or some indication that it is bad if the idle speeds are all over the place?
Thanks!

You might want to check the Idle Air Control Valve to make sure that it's working properly, as it will cause the same sort of high idle condition if not working as it should (IMG:style_emoticons/default/thumbsup.gif) .

Good luck , hope this helps

This post has been edited by accent sport: Oct 1 2009, 10:14 AM

Thanks for the info. Please forgive my ignorance, but where is that?

More info: I was thinking I could take the hose off the air intake manifold and get shoot some cleaner in there to see if that helps. From what I can determine the air intake is what the TPS is attached to. Thanks!

If you can post a pic of your engine around the intake manifold I can pin point it ,as for your cleaning the intake you should take off the hose to the intake and spray it in while at the same time opening and closing the throttle to clean the throttle plate. (IMG:style_emoticons/default/thumbsup.gif)

If you have a multimeter, you can check the TPS resistance when the throttle is closed and when it is fully open. The range for a 98 Elantra is 700-3K according to my Haynes manual. My actual readings were 1000-2450 ohms. I don't have a tach so I don't know how that correlates to RPMs.

You might want to check he intake manifold gasket. Usually will leak between cyl 1 & 2.