ok here it goes agian i had this problem last year but it went away for a while
while driving coming to a stop i put it in neutral (manual car) and the rpms dont drop till you come to a complete stop then it finally drops slowly.

i got obx 4-1 headers, 21/4 exhaust piping, cold air, new fuel pump, new plugs and wires.

please help.

and any one kno how 2 check for air leak??

 

Try Resetting ECU. but follow procedures at hyundai webtech site...

Breakin....
10 miles, between 2-3000 rpm AC ON a few miles AC off a few miles. turn it off... do it once more and ecu reset is complete.

 

done that

 

Lube up the throttle cable and also make sure your TB isn't sticking (with the Throttle cable off).

 

what can i use 2 lube it wd40?

 

spelling problem too! LOL

 

still sounds like a TPS to me.

 

Visit any auto parts store. They will have "Cable Lube". I would not reccomend you use WD40, as it doesn't last long, but it will work short term if you have it handy.

While you're at the auto parts store, pick up a cheap $20 multimeter and check the TPS voltage like Mad Machine suggested.

 

<div class='quotetop'>QUOTE (AllEyesOnME @ Apr 24 2005, 01:41 AM)</div><div class='quotemain'>while driving coming to a stop i put it in neutral (manual car) and the rpms dont drop till you come to a complete stop then it finally drops slowly.
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How many rpm are when this happens?

When I put in neutral while driving rpm drops to 1000-1100 RPM. then when I stop it drops to 800-900 RPM.
Is it ok?

 

Yeah, the car will not drop down to 800 rpm right away. It sits on 1k for a moment before slowly dropping. Also anything that uses power can cause the rpm to go up. Brakes for example but also the vent for cooling the engine.