I was driving in Phoenix today it was like 104 degrees so I had the a/c on. I noticed that when I downshifted from a turn my car would hesistate for a sec. then go normal. It happend a few times while in 5th on the freeway, but not as bad in the lower gears 1,2,&3. Ever since I put my turbo in I noticed my vac. guage would read -12 and the car would idle rough, but the rpms would stay at 750. Could this be a vac problem or can it be something really bad like detonation when the a/c is on?

TIA

 

so u only notice this with the a/c on?

 

It has done it a few times when its hot out with the a/c off, but yesterday it was doing it almost all the time with it on, especially from a stop or when I downshifted for a turn.

 

My car acts REALLY weird with the A/C on when it is 100+ out. It almost stalls at lights and stuff. So, do not think you are alone!

Dustin

 

yeah my car sucks also with the A/C on. If i am driving with it on, i have to rev higher to compensate for the ac. It sucks with this heat

 

i have not yet installed my turbo but I started having this with my a/c about a yr ago. I put in an Unorthodox Racing underdrive pulley (got it real cheap by calling the factory--B stock for $119) and it cured that problem right away. has been running great since. Never notice the a/c at all. Just a suggestion.

 

are any of you running a test pipe with a code 67? I was wondering if that had anything to do with it. with the a/c off it runs great.

quikrpm1,
I wish I knew you were in Phoenix, I would of liked to check out your ride. Maybe next time I'm out there.

 

what town are u in? Definately, next time your in phoenix let me know.

 

just sounds like the AC compressor is kicking in more than usual robbing you of power. thats why i never use the AC.... its worth it to me to break a sweat for the extra couple of horsepower with the AC off..

 

quick,
I'm in Tucson.

*******,
I ususally drive with the a/c off, but my girlfriend was with me so I had to have the a/c on.

 

ha, last time i picked my g/f up from the airport i ran the AC, and car ran like crap, no more AC. shell just have to sweat from now on.