Another A/C idle issue with big cam...

[-Q-]

Car is 2001 WS.6, 6sp with a LQ4 shortblock, ported LS6 heads, and an EPS 238/242 .604/.605 112+4 cam. I've been getting help from a reputable tuner in getting this car tuned with HPT, and it idles and runs great. I usually ride with the windows down, but I got my windows tinted today, so obviously I had to keep them up. Went to turn the A/C on as I was idling, and the car immediately stalled down to about 500rpm and showed way lean on the wideband. It idled erratically for a while, and eventually came up to 850rpm where its supposed to idle, but it idled really rough and surged a lot.

I can run the A/C if I'm cruising down the highway or even driving down the backroads and the car runs just fine. The problems all seem to be at idle.

I'm a total newb to HPT, and barely know what I'm doing. Just wanted to see if I could get another set of eyes on the tune regarding the A/C values and see if anyone has any suggestions. My tuner's been a bit out of pocket lately, so I haven't been able to get in touch with him...

Thanks guys.

[-Q-]

Anyone?

[Google]

You have your iac vs effective area messed up to start with.. fix that and post a log and I will point you in the right direction.


..

[-Q-]

You have your iac vs effective area messed up to start with.. fix that and post a log and I will point you in the right direction.


..

OK, made some changes...see if I am any closer with this. It bogs way less on initial A/C turn-on, and will somewhat idle at 950 but it's a little rough.

And thanks very much for the help, I really appreciate it.

[Google]

OK, made some changes...see if I am any closer with this. It bogs way less on initial A/C turn-on, and will somewhat idle at 950 but it's a little rough.

And thanks very much for the help, I really appreciate it.

Good that it is a better but I need to see more in the log.



.

[-Q-]

Done

[-Q-]

One more time...done!

[-Q-]

New log...