SR Idle?

[bulgartkd]

Hi Guys,After installing my S13 black top it was idiling at about 900 RPMs, however the car and engine were shaking quite much so we decided to raise the idle at about 1,100 RPMs. At that number, it is much settled, however now I noticed that the idle has a mind of its own. Sometimes it will idle at 900, sometimes at 1,100, and sometimes even at 1,300....all with the A/C off. My motor mounts seemed to be OK, so is the SR prone to shake? What do you think is up with my idle, or is it just the MAF and the different air tempt. that is sucking at various times? I want to run the car for about couple of more weeks so I can get rid off build up and then perhaps lower the RPM to 900. What do you guys think? Sorry for the long post......!

[IvoryJ30t]

i would change the plugs and clean the TB.

sounds like its misfiring.

[quiksilvia]

but it shouldnt shake that much, shaking not tight

[bulgartkd]

Brand new NGK V plugs. The car does not drive funny, its just when it sits and idles.

[quiksilvia]

could be the mounts, but clean the mafs as stated above

[theburg240SX]

I have the same problem too. My idles fine when the a/c is on, but if the a/c is off it idles from 1k to 1300.