Sean Cummings

Ok here is what is happening, with AC on the car will surge when coming to a stop, it will recover and idle fine after a few sec. The car will not do this with ac off. The car has been tuned by Zzp a few times bit it still does it. My mods are in my sig. Car runs fine except for this.

Supercharged06SS

iTrader: (1)

I always had that problem in my LSJ. It got worse when I switched to 80s and e85. I've read the same thing other places, that the car runs like crap with the AC on. But for some reason my lnf runs perfect with AC on

Sean Cummings

Thanks for the reply, it only started after the mods and tune

Slowbalt2000

iTrader: (1)

It probably has to do with the tune as long as you dont have any intake air leaks

Staged07SS

iTrader: (25)

2007's had an idle hunt issue. It's in the tune.

Sean Cummings

I have HP tuner where is the ac follower settings? Or when would I look at this and fix it?

Area47

add a global 5 to the ac table in torque management. {first tab}

Sean Cummings

Meaning add 5 over whole chart on the engine tab under torque management tab?

Slowbalt2000

iTrader: (1)

So if my idle hangs with the AC on i should do the opposite? Lol

Area47

correct.

the LE5 is a different story.

mrbelvedere

iTrader: (3)

the man speaks

Sean Cummings

Doing the global 5 didnt help any, still the same, any other options?

Sharkey

iTrader: (1)

i tried it on my car, added 5 to the whole table. idle is far better, but not perfect yet.

Area47

There is a few other things that come into play. Who did the fuel injector scaling? You ever clean the throttle body? Have you logged fuel trims?

Not everything is an easy fix.

Sean Cummings

Zzp did fuel incector pulse, the TB was replaced earlier in the year due to it failed. I only have the issue with AC on. The idle with it off is silky smooth. I have logged the car numerous times and cant see anything out of ordinary

Area47

if the scaling is off, the whole tune is off. This is the point i was trying to make. There is some timing table manipulation that can be done as well to take care of it.