jsteele90

iTrader: (13)

now my car has an idle surge problem. hopefully when i install this new tb it will go away. any ideas.? on what it could be. car has new plugs, seafoam done 2 weeks ago, cleaned tb, new air filter, cleaned maf. pcv valve is new.

XpEdItIoUs

iTrader: (44)

Idle air control valve, or maybe your mafs damage when you cleaned it.

Soul TKR

iTrader: (4)

when did you get that BBK TB? recent?

you have a hole drilled in it?

180ls1

iTrader: (4)

get some maf cleaner and do that just in case. Also unhook your battery and hook it back up and that will help your car relearn it's idle. It might take a couple of days to relearn. So i have heard.

180ls1

iTrader: (4)

you also want to make sure he did not over port it, like remove material where the throttle blade is when it is at rest. That would allow extra air to pass by and cause problems

ss.slp.ls1

iTrader: (36)

I would check for a air/vacuum leak.

james562

iTrader: (35)

Did this just start after your converter was installed?

Anytime you install a aftermarket converter you want to have your tuner bump the idle from 550 to about 750RPM and play with the idle airflow settings... The smaller diameter converter will cause to car to surge due to less rotating resistance and the stock tune cannot compensate. My tuner did it for free when I had my converter installed as well as adjust the shift points so your not tagging the limiter on the 1-2 and 2-3 shift...

https://ls1tech.com/forums/showthrea...ght=surge+idle

james562

iTrader: (35)

If it's not a converter tune issue I'd look for some way unmetered air is entering the intake path.... loose egr oring, bellows not all the way on, throttle body not fastened, etc

Whatever you used to clean the MAF might be messing with the car as well

BigDaddyBry

iTrader: (15)

If it happened after your TC install, then you'll need to get it tuned. I went through the same bullshit for months, tried everything already suggested, and a quick tune by Ryne at CMS fixed it.

jsteele90

iTrader: (13)

he tuned it when the verter was installed and said he adjusted the idle. maybe ill go back over there and have him check the tune out. he also did the shift points and line pressure. the car feels awesome its just when you come to a stop it wants to die every now and then,

180ls1

iTrader: (4)

if this only happened right after you changed your tb i would say it almost has to be related to that. Your trans tune will not change all of a sudden.

BigDaddyBry

iTrader: (15)

For some reason, we don't know the complete story. From your initial post we have the current scenario, but what's the whole picture?

jsteele90

iTrader: (13)

havent changed the tb only cleaned it. with seafoam deep creep. havent put the ported factory back on yet. hopefully that will fix it. its shut off on me twice now coming to a stop. really annoying , and embarrassing.

BigDaddyBry

iTrader: (15)

Had the same problem. Mostly on hot starts and when the engine was under load (low rpm turning mostly).

Ryne fixed it. I couldn't tell you what he did, but he fixed it.

jsteele90

iTrader: (13)

well ill have to give him a call then and see whats up.