low idle hunt.

[James]

this is a multi question thread...

A) where is the under dash plug to ground out when adjusted the BISS on a GSX. its not night next to the fuse box like on a VR4/DSM.
B) what causes a LOW idle hunt? Im reading idle hunt threads looking for info and they are all like 1200-2000ish, my idle hunt is 200rpm-1300rpm.
C) sometimes dies when coming to a stop, cant tell if its when i brake or when i push in the clutch.

Haven't investigated the ECU yet, i adjusted the BISS today, but i didn't ground off the plugs because i couldn't find the under dash one.

for referenc...

90 galant GSX
4g63T swap
Hard UICP
CX Racing greddy knockoff BOV recirculated
3inch turbo back exhaust straight through /magna flow muffler
MBC set to 13psi

 

[ambersnow05]

Great info here... Im sure it will help you out.

http://www.ecmtuning.com/wiki/idlesurge

 

[desant78]

Also check out the vfaq on this subject. If you adjusted the biss with out grounding out the ecu weird things can happen. Did this problem just occur? Good luck.

 

[James]

I know Vfaq like the back of my hand, I've read it till my eyes bled then read some more over the years. I read talon digest while it was coming out, I'm not new to the 4g63 but I am new to the galant. (thus why I can't find the under dash plug).

I know these are all problem with high idle, the problem is I don't have a really high idle and I've checked about everything on that list before posting here, I was looking for more obscure reasons. While adjusting the BISS I head a small whistle of air though, I'll assume the BISS oRing is bad and start there.