imDementeD

iTrader: (7)

Ok first a little information
1992 sc3 140k miles stock 2jzge
next issues ive noticed so far..
usually after the car is running for a while the idle drops and i get a "rough" idle almost like the car is camming out on top of that whenever i get where im going..when i go to leave now the car is warmed up..it takes a good 3-5 seconds to start..not always but most of the time..very aggravating.

ok so next thing..i notice this "tapping" noise in my engine bay..i havent really investigated much yet i just took a small video to maybe help figure it out if anyone has had this..

it doesn't increase with rpm's it actually seems to go away or maybe muffled by the engine noise

oh and one other thing that might help with rough idle etc..what would i check and how do i check it..i know some things you measure using ohms but what are they and how many ohms and i looking for etc..

thanks and any and all info is appreciated...
also this video was recorded by my phone so i apologize in advanced if the quality is poor.

http://www.youtube.com/watch?v=LLAncBtV0LQ

Sc4Jr24

I kind of sounds like your fan hitting the shroud. You can also use a mechanics stethoscope
to chase it.