| View previous topic :: View next topic |
| Author |
Message |
Karpaazio
Joined: 03 May 2011
Posts: 121
Location: Finland
|
 Posted: Mon Nov 19, 2012 10:16 am Post subject: What is this thing and what does it do? with pics |
 |
|
what is this and what does it do?
Is it possible to eliminate it or will it do something
Thanks, Kalle
_________________
Porsche 924 1978 Cabrió:
http://www.garaget.org/?car=219790
Porsche 924 widebody (next up?)
Toyota Crown LS110 1983:
http://www.garaget.org/?car=260537
Audi a6 2.7tt quattro 2000 daily driver |
|
| Back to top |
|
 |
fiat22turbo
Joined: 18 Jan 2006
Posts: 4040
Location: Portland, OR
|
| Posted: Mon Nov 19, 2012 10:34 am Post subject: |
|
|
Auxiliary Air Valve.
Adjusts idle based on temperature and time.
You don't want to eliminate it.
_________________
Stefan
1979 924 Carrera GTS (clone-ish)
1988 944 Turbo S (Silver Rose) |
|
| Back to top |
|
|
daniel
Joined: 18 Jun 2009
Posts: 686
Location: Sydney, Australia
|
| Posted: Mon Nov 19, 2012 11:59 am Post subject: |
|
|
I have removed mine to no ill affect
_________________
Over the top of skyline, total brake failure.... hit the wall at over 200 kp/h at the dipper, so anyone who has to brake for the esses is a pussy.
1977.5 Race Car, CAMS Group S Spec
1989 944 Cabriolet |
|
| Back to top |
|
|
924RACR
Joined: 29 Jul 2001
Posts: 9061
Location: Royal Oak, MI, USA
|
| Posted: Tue Nov 20, 2012 12:43 am Post subject: |
|
|
Generally pretty warm in Syndey, no? 
_________________
Vaughan Scott
Webmeister
'79 924 #77 SCCA H Prod racecar
'82 931 Plat. Silver
#25 Hidari Firefly P2 sports prototype |
|
| Back to top |
|
|
Bockscar
Joined: 16 Nov 2010
Posts: 392
Location: Sandy, Oregon
|
| Posted: Tue Nov 20, 2012 7:52 am Post subject: |
|
|
I've removed the IAC's on older Jettas which perform a similar function as the Aux Air Valve. Generally, they are helpful if you're looking to use the AC because engaging the compressor typically reduces idle speed. I see no reason to remove the aux air valve but if you really want to, crank up the idle a bit before you do.
_________________
Brian
'79 924 - Restoration In Progress
'81 924 Turbo w/EFI - Scrapped |
|
| Back to top |
|
|
Karpaazio
Joined: 03 May 2011
Posts: 121
Location: Finland
|
| Posted: Tue Nov 20, 2012 7:57 am Post subject: |
|
|
Thanks for your answers guys! Older friend of mine has it removed and seems to work out just fine..
_________________
Porsche 924 1978 Cabrió:
http://www.garaget.org/?car=219790
Porsche 924 widebody (next up?)
Toyota Crown LS110 1983:
http://www.garaget.org/?car=260537
Audi a6 2.7tt quattro 2000 daily driver |
|
| Back to top |
|
|
joejax
Joined: 02 Dec 2009
Posts: 919
Location: Jacksonville,FLA,USA
|
| Posted: Tue Nov 20, 2012 8:28 am Post subject: |
|
|
I've thought about replacing mine with a solenoid that could be controlled from the cabin.
Also have thought about doing the same with the warm up regulator. Would really need to be in tune with your car to be reliable. 
_________________
I got nothin'
Uhhh...you got any pics? |
|
| Back to top |
|
|
Bockscar
Joined: 16 Nov 2010
Posts: 392
Location: Sandy, Oregon
|
| Posted: Tue Nov 20, 2012 8:34 am Post subject: |
|
|
| joejax wrote: | I've thought about replacing mine with a solenoid that could be controlled from the cabin.
Also have thought about doing the same with the warm up regulator. Would really need to be in tune with your car to be reliable. |
The later model Bosch electronic IAC generally had oily air channeled into them (My old Saab and Jetta was like this) so after many years (like 10 years) of running this way, they would become sticky and would stop working properly. With my Saab, I just cleaned the sucker out real good with a tooth brush and carb cleaner and it worked again. I tried the same method on my Jetta but it didn't fix it so we removed it. We had to bump the idle up just a hair, and the idle ran a bit higher when the car was warmed up.
Regardless, if you're car is a daily driver and you want it to run nice and smooth, I'd just clean it up and leave it. If you're wanting to do something else, remove the thing, clean up the vacuum lines, and bump the idle up.
_________________
Brian
'79 924 - Restoration In Progress
'81 924 Turbo w/EFI - Scrapped |
|
| Back to top |
|
|
Julian
Joined: 24 Jan 2011
Posts: 74
Location: Oxford Ohio
|
| Posted: Fri Dec 07, 2012 1:37 am Post subject: |
|
|
| Mine was bad. Caused the idle to function poorly. Sometimes adjusting around it started to cause more issues. Hard to find so I rebuilt mine. Now works well. The timing is right on with the closing. Finding the correct wire to rebuild with is difficult and a little expensive. OHMs are directly related to the wire length. |
|
| Back to top |
|
|
|
FAQ
Search
Memberlist
Usergroups
Register
Profile
Log in to check your private messages
Log in
924 FAQ (Technical)
