I have 05 Caravan, 4 cyl, 115k. Runs fine (just got back from a 2000 mile trip) that seems to have a quirk or something with the AC.

When I have the AC on and stop at a light, it feels like it hesitates several times. I almost think it'll stall (never has). I usually end up turning off the AC while we're at the light, and start it back up when I accelerate. When the AC is off, there is no hesitation. Also, If I put it in park, and we have the AC on, no problem. I rarely, if ever, have the recirculation going.

One thing of note: I usually wait until I'm out of our neighborhood and on the main street before turning it on. That means the windows are down until I turn it on. When I do, occasionally I hear a sound that best can be described as similar to the sound of loosening a tight lug nut. Still, as long as I'm driving, there is no hesitation and it cools fine.

Is it that I'm just draining too much from the little 4 cyl?

Thanks!

 

A/C is quite a large load, you can usually even feel it cycle going down the road. If you have alot of miles, you might want to try and clean the throttle body, might help reduce the rpm fluctuation.

 

Thanks, I was assuming the AC being a large load. It's a very noticeable hesitation, which I'm chalking up to the van getting older.

I'm pretty new here, I'm assuming if I search I can find out about cleaning the throttle body.

 

I did a little research, and see it's common to get a code from doing this. Is there a way to reset it so the code doesn't come up?

Thanks

 

do it with the battery disconnected

 

Thanks!