My car has actually been acting up for the past couple of weeks, it stalls when I am driving at low speeds or when I let it idle around 1000 rpms.

I have cleaned the maf sensor and tb followed by ecu reset and idle relearn.

Possible vacuum leak? PVC valve? Idle control valve?

I've read a lot in the forum that the 08s have the similar problem but never a solution.

I have also tried many searches but still haven't found any REAL solution.

Earlier today I let the engine idle and it was around 700rpms which seems fine, I tried to rev it a couple times while on neutral I let the needle go back to place but maybe 2 out of 5 times of reving it, the rpms would drastically fall almost to 200 Rpms and almost stall.

Any help? Thank you so much.... And if anyone has solved their issue, please tell me how..

 

is the check engine light on (SES) ?

 

No its not :/

I wish it was so it can tell me the problem.

 

Have you tried to clean the throttle body? Not sure but have read that sometimes when its dirty you will get the stalling... would not hurt to try, I know there is a DYI for it.

keep us posted.

 

Yes I have done that many times. The only thing I do not do is move the plates, idk if I should give it a shot and clean them too.

 

What do you mean you did not clean the plates? Did you clean the tb inside, including behind the throttle valve? There is supposed to be a small amount of air going through even when the throttle valve is closed--that can be blocked by even a small layer of gunk. I would also check any intake tubing/hose for even the smallest cracks where there could be an air leak.

 

The plates inside the throttle body, I've read that if I move them or open them by force I guess it messes up....I'm not so sure. But I do clean the front side and the back side of the throttle body.

I thought it would be the intake but I recently purchased a k&n cold air intake, and the stallin problem is still there. So I do not think its the intake..... Is there Amy certain hose that I should be looking at?

 

As long as the back of the valve is clean (where most of the soot develops) and the rim around the throttle valves gets sprayed liberally with induction cleaner, you should be fine.

The hoses I was referring to are the breather hoses that come off the side of the intake near the throttle body.

In any case, it sounds like an issue with the tb or the base idle is set wrong because when you rev it and let off the gas, it should go back to idle rpm and not dip lower.

 

I cleaned it all over agai today, I cleaned the back side, it was really dirty.

I checked the hoses and no cracks are visible.

I tried listening to the engine and for any noises and it sounds like a slight whistle/pitch as if it is releasing air from somewhere, it ended up being the k&n filter making the noise so I do not think its that.

How can the base idle be fixed?

 

have you gotten any water through your CAI? water can can hit the MAF sensor on the way past and throw the car into a limp mode.

 

I believe I haven't. I have used the Crc maf cleaner to clean the maf sensor and sprayed Crc tb and intake clean on a towel to wipe off any dirt from the intake....