Jump to content

Server Lease Renewal/Software Licenses

Our yearly server lease, software licenses, as well as hardware operating costs, ARE due Dec 6th, 2021. Our current donations have fallen far short of the funds we need to renew. Please remember the RennTech.org community is Member supported so please consider a donation to help...  THANK YOU!

Welcome to RennTech.org Community, Guest

There are many great features available to you once you register at RennTech.org
You are free to view posts here, but you must log in to reply to existing posts, or to start your own new topic. Like most online communities, there are costs involved to maintain a site like this - so we encourage our members to donate. All donations go to the costs operating and maintaining this site. We prefer that guests take part in our community and we offer a lot in return to those willing to join our corner of the Porsche world. This site is 99 percent member supported (less than 1 percent comes from advertising) - so please consider an annual donation to keep this site running.

Here are some of the features available - once you register at RennTech.org

  • View Classified Ads
  • DIY Tutorials
  • Porsche TSB Listings (limited)
  • VIN Decoder
  • Special Offers
  • OBD II P-Codes
  • Paint Codes
  • Registry
  • Videos System
  • View Reviews
  • and get rid of this welcome message

It takes just a few minutes to register, and it's FREE

Contributing Members also get these additional benefits:
(you become a Contributing Member by donating money to the operation of this site)

  • No ads - advertisements are removed
  • Access the Contributors Only Forum
  • Contributing Members Only Downloads
  • Send attachments with PMs
  • All image/file storage limits are substantially increased for all Contributing Members
  • Option Codes Lookup
  • VIN Option Lookups (limited)

Air/Oil Separator replacement: What else need to be done?


Recommended Posts

Air/Oil Separator replacement: What else need to be done?

I am ordering the AOS from pelicanparts.com for $112 and wanting to replace it myself. I will check and clean the MAF sensor but what other things do ppl replace or clean?

Thanks,

Link to comment
Share on other sites

Gotten replaced. Took about 2 hrs wrestling the thing in and out. Ended up using a generic hose clamp.

I didn't replace anything else, just the AOS.

Dense cloud of smoke lasted about 5min. The remnant of oil went away after 50k miles or so.

Were there any revision to the AOS device?

Link to comment
Share on other sites

"....The remnant of oil went away after 50k miles or so.

...

50k miles for the telltale signs to disappear? That's a lot of driving with smoke! eek.gifeek.gifeek.gif

jk...congrats on changing it out before it caused a problem. cheers.gif

Regards, Maurice.

Link to comment
Share on other sites

lol... 50miles. but yeah.... no more smoke. it's crazy the amount of smoke it makes after it starts up. Thinking back at when the AOS failed on the highway, the couple drivers behind me was prolly pretty pissed.

Link to comment
Share on other sites

lol... 50miles. but yeah.... no more smoke. it's crazy the amount of smoke it makes after it starts up. Thinking back at when the AOS failed on the highway, the couple drivers behind me was prolly pretty pissed.

Trey:

Better that they get a little inconvenienced than your engine suffer a hydrolock! cheers.gif

Regards, Maurice.

Link to comment
Share on other sites

  • 2 years later...

Reviving the newest thread I could find on this topic, just want to document the symptoms in case it helps others...

Just finished mine, 1997 Boxster chassis, 2001 3.4 motor. The original AOS from the Boxster's 2.5 was on the 3.4 motor, it had the horizontal diaphragm chamber.

The very slowly accumulating symptoms were hunting idle, stalled once at a light and driveability at low throttle became increasingly difficult (throttle control off idle was jerky and it felt like you were going to stall especially when cold). The final and highly diagnostic symptom was a 3-4 shift at redline resulting in a huge cloud of smoke in the mirror and the consequent "OH $HIT" moment. After the big puff, the smoke was fairly visible and continuous, but not thick. I got home, did the odd googling, which lead me to pull the J-tube out (plugged it on the intake manifold end) and the smoking stopped almost immediately. I also noted that the idle was smooth with the plugged J-tube, which simply reinforced the already obvious diagnosis.

Got the new one, installed this morning in about 2 hours elapsed time, probably half of which was just cleaning off the accumulated crap on the engine (godliness is next to cleanliness :)). It's a pretty easy job, the only tricky part was re-installing the accordion hose clamp on the bottom (I couldn't find my big box of Real Hose Clamps, so I reused the spring clamp).

Started the motor with the cover off, checked all my fittings and it looked good, so took it for a drive and wow the car was transformed. I can't believe how much the leak affected driveability, rolling off a stop smoothly is quite easy now and I'm surprised that I was so acclimated to the poor behavior that I didn't figure it out sooner.

Link to comment
Share on other sites

Nice work.

For the spring clamp you recycled (sounds like a couple times), I recommend going in and replacing that soon if it's not too difficult for you. Once you "unspring them" a couple times they lose their spring and have a tendency to start making the connection weep.

I prefer the high quality stainless worm style clamps myself, even though some say a fresh spring clamp might be better because it expands and contracts with heat expansion. Hogwash!

Link to comment
Share on other sites

  • 1 year later...

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

×
×
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.