Major Issues with 2011 Coupe

[BigBuffalo]

Hey everyone. I did my rear brake pads and when I went to drive the car around to make sure everything was good I had some really weird problems with me car.

1 - Really low idle. I would start the car and it would idle way lower than normal and then stall out.
2 - A/C Compressor not turning on so my AC is just blowing hot air.
3 - Once I get the car started and in gear whenever I get to 2500-3000 RPM the car does this really weird bucking and it forces me to upshift. (Only tried this in 1st 2nd gear in my neighborhood.)

Now I'm like 99% sure this has nothing to do with my rear brake pads but the only think I did in the engine bay was take the cap off of the brake fluid reservoir. What in the hell is suddenly causing all of these issues with my car?

[frapjap]

Howdy!

You're right, the brakes are probably unrelated.

For 1 and 3, I would check to see if the MAF was bumped or unplugged. If not, unplug it and plug it back in to be sure it isn't loose and the connection is tight.

For #2- the compressor is spinning, right? As in, the belt isn't dragging across the pulley?
If not, try to charge it with one of the DIY kits at the auto parts store and see what happens.

[BigBuffalo]

I did double check the MAF but no codes were thrown related to a malfunction on it.

I did get back and double check and noticed that the VDC light came on so I believe that I might have messed something up with a sensor on the rear without knowing.

For the compressor I had no idea. First time ever dealing with an AC issue and just didn't hear anything happen when I switched the AC on.

I had the car towed to a shop to look at everything and do my state inspection so we'll see what happens.

Appreciate the reply though.