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Discussion Starter #1
Hi guy, im having same problem for some time now. I have a GTS, year 2000 and it keeps acting odd. Idle is high when car is cold, about 2k rpm (but its summer now, so its still high) and when it warm - about 1600 rpm, when revved up to 2k rpm it drops to normal 900-950 but rises in a few seconds and stays at 1600 once again. Also check engine shows me codes 1346 and 1349. Motor gets hot soon and the fan keeps blowing even in idle.

the lift still works...

What could be wrong? What single diagnose could connect these symptoms?
 

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it could one of two things. your IAC is really dirty, and needs some cleaning. OR You are experiencing some kind of air leak.
 

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Discussion Starter #4
Cleaned the IAC. Didnt find or hear any suspicios air leaks, but they are always tricky to find, arent they...

Is there any way to test ocv? And cam pos sensor?
 

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aned the IAC
How did you clean it? Soak it with wd40. The valve is probably stuck OPEN which is why you are experiencing hi idle.
 

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Discussion Starter #6
Cleaned it with good ol wd40, idle is jumping somewhat... Sometimes it stays normal for a bit.

I suppose variable timing can also mess up idle so checking vvt ocv might be the next best thing
 
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