 Question about magical, mystery knob!?! |
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| Mike!! |
 Feb 7 2023, 01:58 PM
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#1
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Newbie  Group: Members Posts: 6 Joined: 13-August 22 From: Honolulu Member No.: 26,770 Region Association: Hawaii  |
Aloha, new 914 owner here!
While peeling off the nasty 50 year old Perlon carpeting, I dropped the dealer-installed A/C unit on my 1973 1.7L. I found that there was a weird control knob connected to a small metal bracket that was pop-riveted to the back of the under-dash A/C unit. It was also secured to the underside of the dash with a 1/4" sheet metal screw. The cable that extends from the switch goes up into the instrument area, and it does not appear to be related to the A/C unit itself. Any ideas what it could be? Possibly a felonious odometer rollback device? The odometer is ganked on the car, it reads 4500. But just wondering if anyone has seen something like this before? TIA, -- mike    |
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Replies(1 - 7)
| BeatNavy |
Feb 7 2023, 02:07 PM
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#2
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Certified Professional Scapegoat Group: Members Posts: 2,951 Joined: 26-February 14 From: Easton, MD Member No.: 17,042 Region Association: MidAtlantic Region 
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That indeed is the odometer reset for cars equipped with the A/C console. If the odometer isn't working it could be because someone tried to reset it with the car in motion.
It can be fixed if you want to open it up and fiddle with it. Aloha Mike! |
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| Mike!! |
Feb 7 2023, 03:01 PM
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#3
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Newbie Group: Members Posts: 6 Joined: 13-August 22 From: Honolulu Member No.: 26,770 Region Association: Hawaii |
Awesome. Mystery solved.
Now I'll have to figure out how to crack the odometer and fix any stripped gears. "Clocking" the odometer is now a felony! I guess it wasn't in 1973. I really like the idea that there is a knob on my car that facilitates crime! Breaking the law! |
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| madd_dogg_914 |
Feb 7 2023, 03:16 PM
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#4
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Member Group: Members Posts: 480 Joined: 30-March 03 From: Vacaville, CA Member No.: 497 Region Association: Northern California |
QUOTE(Mike!! @ Feb 7 2023, 01:01 PM)  "Clocking" the odometer is now a felony! I guess it wasn't in 1973. I really like the idea that there is a knob on my car that facilitates crime! Breaking the law! I'm pretty sure that rolling back the odometer has always been against the law. That knob controls the trip odometer (the small odometer at the bottom), not the odometer itself. Attached image(s) 
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| BeatNavy |
Feb 7 2023, 03:41 PM
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#5
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Certified Professional Scapegoat Group: Members Posts: 2,951 Joined: 26-February 14 From: Easton, MD Member No.: 17,042 Region Association: MidAtlantic Region
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Yeah, sorry, I meant the TRIP odometer reset.
I would never encourage breaking the law (IMG:style_emoticons/default/yikes.gif) |
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| NARP74 |
Feb 7 2023, 04:34 PM
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#6
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Senior Member Group: Members Posts: 1,370 Joined: 29-July 20 From: Colorado, USA, Earth Member No.: 24,549 Region Association: Rocky Mountains |
And that is the early style trip reset. Interesting that they had to create a bracket due to the AC since it blocked where the knob usually goes in the dash hole seen in one of your pics. Never seen one of those.
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| emerygt350 |
Feb 7 2023, 07:35 PM
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#7
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Advanced Member Group: Members Posts: 2,890 Joined: 20-July 21 From: Upstate, NY Member No.: 25,740 Region Association: North East States |
The speedo fix is easy and fun if you like that kind of thing. Get a good light a beverage and take your time. Great instructions are here on the forums.
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| fixer34 |
Feb 7 2023, 11:00 PM
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#8
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Senior Member Group: Members Posts: 1,269 Joined: 16-September 14 From: Chicago area Member No.: 17,908 Region Association: Upper MidWest
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That is the trip odometer reset, doesn't do anything with the actual odometer. If the knurled knob turns in the cable housing and you don't want to reinstall it, I'm looking for one. Mine rusted up solid.
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