Help me out here guys!
I had one code showing, which was the coil code, so i just replace those. I thought that might take care of this problem too, but apparently not. So here's what happens(2000 AT i30)when i hit the auto button on climate control, the rpm's really go up and down, like it's missing a spark plug or something. If it's in park, or in drive with my foot on the brake, it will stall. I replace the radiator a month ago, and the problem has continued thru. Any ideas?
Thanks,
Mike

 

It sure sounds like a vaccum leak... Also, keep those old coils around, that may come in handy.

Just for giggles though (and a much cheaper route than the coil packs) remove & clean out the TB & IAC. It can't hurt, its DIY and in the process you might look closely for a line/thin black tubing either disconnected or off from the brake master cylinder area.

Interesting that you are not also getting more codes for this issue.....

Be sure to get the 2 gaskets for the TB & IAC when you do them

 

check your IACV

 

Thanks,
Let's just pretend for a second that i'm not good with acronyms, althought i do get the dyi. What's TB, IAC and IACV?

Mike

 

tb is throttle body thats all i know and ur car looks good i have the same color and model.

 

I appreciate all of your input! After digging around in my engine area, i saw that the air filter from my cold air intake was disconnected. I connected it and problem solved!!!
LOL

Thanks Again,
Mike B