Throttle valve R&R, 1.7 liter et al |
|
Monday, 6 January 2025 |
Porsche, and the Porsche crest are registered trademarks of Dr. Ing. h.c. F. Porsche AG.
This site is not affiliated with Porsche in any way. Its only purpose is to provide an online forum for car enthusiasts. All other trademarks are property of their respective owners. |
|
Throttle valve R&R, 1.7 liter et al |
r3dplanet |
Mar 12 2013, 08:00 PM
Post
#1
|
Senior Member Group: Members Posts: 679 Joined: 3-September 05 From: Portland, Oregon Member No.: 4,741 Region Association: None |
So I decided to pull the throttle body (valve) from my car in order to rebuild it. The throttle valve had a tendency to leak and stick. It was also moderately dirty. At the time I was on a personal mission to pull and restore every major component of the D-Jet system. Since then, I've performed similar operations on the MPS, AAR, etc. Perhaps I'll document those operations in a similar way.
My car is a 1971, but the engine is a 1973. I know that other engines use a top-mounted throttle valve, but it's actually quite similar to the side-mounted units like mine. I realize that this isn't superorbital propulsion engineering, but it might be helpful to somebody. Here's the original setup. You can clearly see the part number 022 133 067 under the muck, along with various scratches and nasties. In this photo you can see that there's quite a gap around the brass air valve and inner diameter of the main bore. It seals if the valve is fully closed, but even the smallest relief of the lever allows air to pass. |
r3dplanet |
Mar 12 2013, 08:08 PM
Post
#2
|
Senior Member Group: Members Posts: 679 Joined: 3-September 05 From: Portland, Oregon Member No.: 4,741 Region Association: None |
Moving on, pay careful attention not to lose any small parts. You could source them again if you look around, but it's nothing you can go to Ace Hardware and pick up in the fasteners section.
Pull the cable stop. Also take a moment to familiarize yourself with the approximate locate of the hash marks on the underside. This plastic box houses the throttle position switch. At the end, you can use a multimeter to make sure this is set correctly. Use a flat blade screwdriver to remove both of these screws. It took a little force, but you can now free the throttle position switch from the valve shaft. You can see that the plastic housing is clamped to the perimeter of the TPS by use of six plastic tabs. The one in the lower right corner is broken. If you have a lot broken tabs, you might consider finding another one. |
Lo-Fi Version | Time is now: 6th January 2025 - 07:01 AM |
All rights reserved 914World.com © since 2002 |
914World.com is the fastest growing online 914 community! We have it all, classifieds, events, forums, vendors, parts, autocross, racing, technical articles, events calendar, newsletter, restoration, gallery, archives, history and more for your Porsche 914 ... |