2005GeeTee

My rpm's drop low, and when I turn it off they jump up for a second and then start to idel normally. Some say this is normal, any opinions?

Thanks for any info ahead of time!!

stupidgenius36

Sounds pretty normal to me. How much deviation are we talking?

EastTNMustang

Sounds like it's the A/C compressor cycling...how many rpm does it drop? 200-400? If so, that's normal.

05YellowGT

Try resetting the idle and see if that helps ...

2005GeeTee

How do you do that?

EastTNMustang

Any more information about how much the RPM is changing? More info will help.

05YellowGT

It's in the owner's manual, if you have one. You'll need to unplug the battery to clear the adaptive memory, or if you have a tuner re-flashing the tune will clear it. Then let the engine warm up to operating temperature and let it idle. The manual says for a couple of minutes with the A/C off, I usually let it idle for 10 minutes, then turn the A/C on and let it idle again. Then the computer should hold the same rpm's whether the A/C is on or off, unless you have some other problem.

Boomer

My 05 was doing that too.
There is a slight drop (which is normal)...and I mean slight.

I had it to a point where I thought it was going to borderline stall.

Throttle body ever been cleaned?

2005GeeTee

I did that today and now she's working like a champ. Thank you!!

05YellowGT

You're welcome