2G varying idle/idle surge!

[need4speed187]

I have had a problem with idle surge for quite some time now, it first started my idle was really low, around 500 ish so i turn my BISS out a little bit it fixes it for a little while but would sometimes die when i clutch it. Now when i start it, it does the normal high idle at cold start then it goes down 1200 where it remains until it starts to warm up then it will surge between 12 and 1500 this is with the BISS all the way in. I know thats not good but it is the only way to stop it from surging violently. Sometimes it wont surge it will just remain at 1200, sometims it sits at 900, sometimes it surges faster. I checked my isc motor took it out cleaned it and tested it by just taking it out still plugged in and put the key in the on position it twitched a little bit, i dont know how much is normal but ne way i think i have an idle problem ne help or suggestions would b appreciated, thank you.

 

[spoolamatic]

You should have seen it move in/out ,not real far but real noticeable when the key is turn on/off not just a wiggle .if this helps .

 

[azndvdiz]

clean on your throttle body.. if that does not work, it must the sensor. i'm currently having the same problem, so my mechanic unplugged the sensor and raised my idle... it was fine for a couple days, but all of sudden, my engine light comes on, and is idle spurrting like crazy, i presss on the gas, it only revs to 2rpm. still have not figured a solution yet. but try cleaning your throttle body.

 

[need4speed187]

ive looked at my throttle body it looks immaculate no carbon ne where. It seems to get better with warmer weather, im hopin its not the FIAV, does it sound like it is?

ne one??...... or some symptoms of a bad FIAV?

 

[pooker]

An improperly hacked maf will cause these same problems.

 

[Cs4g63]

This guy seems like he had the same problem as you. If nothing else it will give you a range of diferent things to check.
http://www.dsm.org/how-tos/tttt/tttt3.html