pHEnomIC

iTrader: (14)

I have asked this question and searched and never got a useful answer.

My car runs great but when i turn on the a/c, the idle gets very erratic and will sometimes die even when im rolling. What can I do about this? What is a good strategy to tune the tables for it? I have hptuners btw.

bastien

iTrader: (1)

My car does the exact same thing. If I drive for more than 20min with the A/C on, it will idle rolling to a stop.

edcmat-l1

iTrader: (10)

What is your IAC at @ idle? If its too high, it may not be able to open far enough when you turn on your AC.
Try posting on HPT with your tune and a run file.

Jasonscott

iTrader: (10)

The first thing I was determined to fix when I got my hp tuners was idle issues. I spent lots of time messing with ac torque and ac air and all I really needed to do was get my ve in line. After getting the ve table correct or at least close I have no ac idle issues, its flawless with the ac on and my cam is a 231/237. the mail order tune I ordered had the ve table waaaaay off. just something to check if you havent already.

edcmat-l1

iTrader: (10)

Having your VE dialed in is def a must. It makes everything else easier. Most people either ignore it completely or dont spend enough time on it.

pHEnomIC

iTrader: (14)

My VE is spot on I think there is more to it than that.

edcmat-l1

iTrader: (10)

When you say your Ve is "spot on", I guess it will run just fine in SD, right? Thats the only way to really tell if its "spot on".
And if it is, whats your IAC @ idle? If its too far open, to achieve proper idle with the AC off, when you turn it on, it wont have enough left in it to get the additional airflow needed to support the added load.

ramairws6

iTrader: (33)

These guys are right. VE table dead on=very good mannered idle.I had issues with my idle and other things and finally straightened my VE table out and it took care of all my problems.Like they say......it's all in the tune!! Traver