grey matter 04

iTrader: (9)

Need some HP tuners help.
On a cold start up my truck idles great as it warms up until 170*. From 170* to 200 it will surge and idle dumb. When its fully warm at 210* it will not surge anymore runs great.
At about 170* Is also the switch over point on O2s from close to open.
Also if drove on a cold start up when you stop at stop sign at about 170* it will surge n hunt for idle and after about 10seconds of just sitting it will smooth out .
After its fully warm at 210* I have no issues with surging at all.
What am I missing here? Has to be something simple!

guero68

iTrader: (20)

I am far from being a tuner but reading the FAQ/reading till you go blind helps...but with out posting a tune and logs and list a mods its kinda hard to help you

Man i have read my *** on up on the HP tuner forum....use this link..many swear that these tips work...I havent used them on my setup as i got it to idle pretty decentworking on other parts of the tune....look at page 5 post 85


About to throw in the towel nailing down idle

grey matter 04

iTrader: (9)

370lq4,243 heads,224r cam,stock truck 78mm intake
10.5to1 compression
thanks i will check that out

oakley6575

iTrader: (5)

That is for gen 4 tuning. Gen 3 OS's are a bit different. Can you get a log of it happening?

grey matter 04

iTrader: (9)

i can get a log but it will be 2-3 days

guero68

iTrader: (20)

Sorry yeah...I sent u info for 4gen

subeone

seems your fueling could be the problem, or adaptive idle it should be set to work at 176 F stock.

grey matter 04

iTrader: (9)

is this my idle issue/surge on warm up at 176*?
my current tune is zerod out from 176-284

my stock tune has 0.13 in the blocks for 176-284*

new to this trying to figure out a few bugs in my tune