Throttle body cleaning on 2000 Boxster S

[steved0x]

I have 115K on mine. I have not seen a recommended interval for this cleaning and the Bentley does not have a procedure. I didn't think to check the service manuals pdfs I got from ebay or to search rematch for tech service bulletins, it may be in there.

Originally Posted by Nine8Six

Now that is some kickarse documented DIY

Coming from the master of DIY guides and projects, thank you!

Probably if/when the idle gets jumpy would be the time to do it.

I wonder how it gets gunky? Just air supposedly goes through it in one direction? Does some backflow from the combustion process get on it? Or is it just gunk that flows through. Maybe the same gunk that gets on the maf...

[clickman]

Good writeup. I personally found it easier to take it out of the car for cleaning. May just be a sign of my aging back and how much it hurts when I have to lean into the engine bay for too long!

[Lapister]

So, Just asking cause I'm thinking of doing. Most later vehicles with Drive by wire require TB relearn. Does finagling with Butterfly valve have any dire consequences later after cleaning? I have 02 S model. Nice write up too

[steved0x]

Originally Posted by Lapister

. Most later vehicles with Drive by wire require TB relearn. Does finagling with Butterfly valve have any dire consequences later after cleaning?

I sure hope not I was worried about that. I tried to be smooth when I opened the butterfly to clean the edges and behind it. If you took it off you could probably do 99% without having to open the valve and if you had something narrow you could probably slip it through. I think there may be such a tool like a pipe cleaner sort of thing fir throttle bodies.

I didn't take mine off because I didn't have a new gasket and I was afraid I would not be able to reuse the old one. Also tbh I didn't even think to try it. Once you get to the TB like I did it is just 4 bolts and it is off...

Thank you!

Steve

[BoxsterSteve]

Excellent DIY!
I just completed this and a MAF cleaning too.
The only step I deviated was to disconnect the AOS line at the AOS itself instead of at the throttle body.
I still was able to rotate the throttle body up adequately and I found it MUCH easier to disconnect the vent line here.
Oh yeah, and it ran great after I reconnected said vent line.

Thanks again.