AOS Question

[nieuwhzn]

Originally Posted by Bryan topping

Started taking the AOS out, figured since I have one on the shelf I might as well change it. Only issue so far is the pipe the the left side of the engine is being a bear to get released from the AOS & there seems to be a electrical connector bracket preventing the last 1/4" of removal. I'm gonna get some rest & tackle it again in the morning.

Just be patient and make sure you have a cable operated clamp tool.

[healthservices]

Originally Posted by nieuwhzn

Just be patient and make sure you have a cable operated clamp tool.

no need for the tool if you are patient. Does the tool make it easier? Hell yeah, the majority of the time you will spend on removing the AOS could be spent on removal and installing the clamp, but I R&R about 6 of these so far without too much of a issue as long as I was patient.

[Heiko]

Healthservices - no pun intended but you'll need health services if you do many of these without the cable clamp tool.... I tell you, without that cable clamp tool they'd be putting me in the nuthouse by now...

[healthservices]

Originally Posted by Heiko

Healthservices - no pun intended but you'll need health services if you do many of these without the cable clamp tool.... I tell you, without that cable clamp tool they'd be putting me in the nuthouse by now...

Well I have the tool now which is funny as I now use it all the time. In 15 years of being a dealer tech I never used one and always done without. Without the tool I can do most AOS replacements in less than hour, with the tool now I think I can do it in 45 or even less if all the tools are out and ready to go.

Too bad since I had the tool I've only done one AOS replacement

[Bryan topping]

OK, I got the AOS changed (not all that bad of a job) & cleaned and as much of the oil out as I could.

Questions I have so far are:

1. Should I run a can of Techron through to clean the remaining oil film in the intakes?

2. Would a failing AOS trigger the P0420 & P0430 codes?

3. Would the car sitting on jack stands for a few days on the front only cause this?

[Heiko]

The Techron cant hurt and leaving the vehicle propped up in the front for a while shouldnt cause that kind of oil to leak into the intake (unless you had it on a huge angle and running... did you check your pumps?
The 420/430 code usually triggers if the 2 O2 sensors (one in fronto of the cat, one behind the cat) start to read too closely sensing cat failure... BUT... all the oil burning through the system 'could' most definitely cause that....
Get it all cleaned out with the Techron, take it for a good drive (keep an eye on smoke), and then reset the codes, see if they come back... after you drove it for a bit, check the crossover pipe from the AOS to the intake to see if its full of oil again....
Heiko

[Bryan topping]

I took the car for a 120 mile cruise yesterday & it ran great. No smoke, great power & best of all no codes. Oil level is the same, 1 segment below the full mark on the gauge, almost to the upper mark on the dipstick as when all this started.