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nene's Avatar
 
Join Date: Apr 2013
Location: Sonoma, CA....Wine Country
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Carrera AFM Arm Ajust (JUST WOW!!)

JUST WOW!!

After many attempts and adjustments of all different types to eliminate irritating flat spots on my 86 Carrera and a more recent back-fire at certain RPM's, I have finally seen the light!!

Again, JUST WOW!! I test drove the car once I re-adjusted the ARM, and from a cold start I could feel the smooth transition throughout the entire RPM's!! And also (at least until now), the back-firing is gone, even the idle is smoother and the car does not "shake and shiver" any more, which bugged me as well.

Thanx to all who have shared their wisdom and knowledge! Now on to the next challenge.

Serge

Last edited by nene; 02-18-2018 at 11:40 AM..
Old 02-18-2018, 10:31 AM
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Sounds good. What's "ARM"?
Thanks,
Dave
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Dave McKenzie
1984 Carrera 3.2
1984 928S Automatic
2001 996TT
Old 02-18-2018, 11:09 AM
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Quote:
Originally Posted by DaveMcKenz View Post
Sounds good. What's "ARM"?
Thanks,
Dave
Wiper arm inside the Carrera 3.2/964 airflow meters.

The wiper can be moved down the shaft by slightly loosening the bolt and gently pushing it down a tad.

This puts the arm in a new "track" of the resistor board.

You shouldn't see a depression in the pathway. A good surface is virtually flat.
Old 02-18-2018, 11:38 AM
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Afm

Dave,

Take a look at this video for a good understanding of the DME.

https://www.youtube.com/watch?v=-11J8XawQtc


Serge

Quote:
Originally Posted by DaveMcKenz View Post
Sounds good. What's "ARM"?
Thanks,
Dave
Old 02-18-2018, 11:38 AM
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I got it. For some reason I didn't understand. I've actually done this on my two 84"s.
Thanks,
Dave
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Dave McKenzie
1984 Carrera 3.2
1984 928S Automatic
2001 996TT
Old 02-18-2018, 12:14 PM
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Yeah, I put this off for too long, thinking that it was a more involved job than it is. The hardest part for me was removing the RTV sealant attaching the plastic cover to the AFM. It's certainly nice to be rid of the backfires and bucking at warm-up.
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1988 Carrera Coupe (3.2)
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Old 02-18-2018, 01:09 PM
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This is the next thing I will tackle in my rough-idling '85.
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Old 02-18-2018, 02:21 PM
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ever heard of the ss minnow? its a three hour tour. type in sal carceller or scarceller. or 0280 155 784. 41 bucks canadian for 6. lol. you have been warned.
Old 02-18-2018, 06:06 PM
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