Navy'sporsche

I've done alot of reading on the AOS failure and here is my particular situation with a few clarifying questions:

Over the past few months I've had intermittent CEL, P0446 I believe "vacuum leak". However, these have gone out on their own. Related?

The other night, after heavy heavy rain, I fired up my car and large amounts of white smoke poured from my exhaust. It idled fine, however when I tried to coax it with some gas it stumbled and sputtered by didn't die. I restarted it a few times, even drove it about 20 feet, to try and burn off what I thought was probably water in the intake.

The question is: for those with AOS issues, none of them mentioned the basic uselessness of their engine to rev. beyond idle. Furthermore, if I was dealing with a severe a.k.a catastrophic failure would the engine even start and idle perfectly the 2-3 times that I did it?

Car's in the shop tomorrow, just want to be on the right page before I get my sentence.

ivangene

AOS is a good suspect, there are plenty of threads about it... can make the car smoke HUGE white clouds, squeal like a whale, run rough, and other issues.

I replaced mine chasing a problem that turned out to not be the AOS, but I read alot about it. Dont panic till its time to panic...take it in and let them diagnos it. An AOS is cheap but the labor can run from 5-8 hours IIRC Part is $150 ish and some small parts along the way for additional $100 max

dkem7

P0446 is related to the evap canister (located in the right front wheel well). The dealer replaced my gas cap in reaction to this code last time in. It did not cure the code from re-occurring though - but it does clear after driving for a couple of days.

I am unsure if an AOS failure can trigger P0446.......?

medtech

I've petted the steering wheel heavily, but that's as far as I've ever gone...

onefastviking

I guess I am a ****, I've blown a few, one of my own and a couple for others !

Patrick E

That's nothing; I've blown two cats!

Now back to the OP's concern...

onefastviking

I've blow a few of those also, I guess I'm pretty good at it because those cats make a lot of noise when I blow them.

onefastviking

Hey Navy,
With the car running what happens when you remove the oil fill cap ? Any sounds that you hear ? Idle change ?

Tippy

Blew mine, 13 hours of work I dont want to ever do again.

99firehawk

p0 446 is a fault for the shutoff valve for the orvr system.

Definatly cannot be casued by a AOS

onefastviking

Having a vacuum in the system via faulty AOS could trick the system into thinking the shutoff valve isn't working since it is still reading a pressure difference.

goliver

Onefastviking,

you are absolutely killing me! I spit beer at my computer screen I laughed so hard. To funny...
When my AOS let go it smoked like crazy at higher RPMs. The Idle changed appreciably with the oil filler cap off. Pain in the *** to change while doing the clutch but not nearly as bad as a waterpume change or even those pesky spark plug tubes.

Cheers,

Geoff