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Discussion Starter · #1 · (Edited)
Well, I tried to repair the trip odometers on two speedos today. turns out both had the same little gear broken that gears the red number 10th of a mile wheel to regular odometer 6 digit gears.

So ended up with original 202k speedo back in BB1 but still with dead trip odometer.

I did also reset the other 197K 6 digit odometer set to 000000 with bad trip odometer just to see if I could follow directions I was sent by fellow BBer. I could have set it to any mileage I wanted but chose to zero it out. Trip odometer no good on that one, too.

Guess that little gear is good for just about 200K.

I put zeroed out 000000 unit back into cluster with bad voltmeter. I robbed out all the good mini peanut bulbs from it too.

I ended up with three good clusters with all good bulbs but only two have working trip odometers. I test drove them all using BB1 as test mule.

I found out there are 19 screws - 11 longer and 8 shorter holding back white cover on cluster plus 4 more holding odometer set to cover. I marked all locations with L and S but you can force long screws into short screw holes without any ill effect it seems just takes littel extra twisting to get longer one to bottom out in original short holes.

I now have a spare 40K cluster and a spare 140k one with good trip odometers. I did not reset odometers on these as they came out of parts cars I had scrapped.
 

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1991 164L
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Discussion Starter · #2 ·
More speedo pictures
 

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1991 164L
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Discussion Starter · #3 ·
I swept up all the dead bugs (bulbs) after I got done with cluster testing.
 

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1991 164L
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Discussion Starter · #5 ·
Could the broken pieces be repaired by wrapping with very thin wire?
The little gear just crumbled into many pieces on first one I tried and second one couple teeth missing.

Since main odometer works, moving on to more important things.
 

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Great work Steve, I have replaced bulbs in these numerous times but never actually pulled one apart, is it possible to swap the digital speedometer from the 24 valve units into the 12 valve units?


Sent from AutoGuide.com Free App
 

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1991 164L
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Discussion Starter · #7 ·
Great work Steve, I have replaced bulbs in these numerous times but never actually pulled one apart, is it possible to swap the digital speedometer from the 24 valve units into the 12 valve units?


Sent from AutoGuide.com Free App
I have no idea, never been inside a 24v speedo cluster.
 

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Forgive me for waking up an ancient thread, but I've been google'ing a bit with very little luck. I have the exact same disintegrating gears as pictured above and a dead trip meter.
I emailed palo alto speedo but am not especially hopeful. Any other advice other than live with it? Is trying to find another used unit the waste of time I suspect it is?
 

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Steve...I've got a bad tripodometer in my red car and would like to replace the whole cluster with a spare, but want to reset the mileage to what is showing on the existing odometer. How to I do that?
 

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Back when I was young, you could go to the FLAPS and buy a little stick-on manual trip odometer, and just reset it whenever fueling up or setting off on a trip or whatever. Wish somebody still made those!
 

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I could put an hour meter on it or something lol... Or somehow convince my significant other to actually note the mileage on fuel stops.
Guess I should be grateful the odometer works.
 

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1991 164L
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Discussion Starter · #16 · (Edited)
Guys, guys, Alfistis all it just ain't worth it to try and fix the 91-93 164 trip odometer gooey failed gear that interconnects tripper to regular odometer.

R2 I would have to do the process over again to remember how I reset mileage gears but is it really necessary?

AND yes you can reset new used speedo odometer to match your old one if it is really mandatory. I even rest one to 000000 just cuz I could. BUT tripper reader not so fast if interconnecting gear kaput.
 

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1991 164L
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Discussion Starter · #17 ·
I don't remember the process or who sent it to me but to I had to reset odometer mechanically by taking it apart enought to be able to spin the number wheels to change the mileage a real chore as i sort of remember.
 

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Guys, guys, Alfistis all it just ain't worth it to try and fix the 91-93 164 trip odometer gooey failed gear that interconnects tripper to regular odometer.
I tried too and had to abandon.

Sophia (164B) has 248K miles and now I write down the mileage each time I fill up so that I know when 300 miles are up to refill again since the amber warning light comes on far too soon.

Its a way of life....
 

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I replaced the odometer in the red car yesterday with one from the deceased hit and run. The one from the red car had a poorly working solenoid, so it now sits on my storage shelf waiting for repair.
 

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I trashed a cluster for a pre 95 (mechanical odo not digital) as no one claimed it as a freebee but I have the trip-odo. Plus the water, oil gauges. Free to anyone that wants them. You pay for the postage. Do they all work? Can't be sure but they are intact.
P.M. me.


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