Speedo, and an Odd Options

[kkid]

Hey guys,

So my Creamsicle has finally seen a road after about 1.5 year of jack stands time. (IMG:style_emoticons/default/cheer.gif) Now the speedo didn't work so I changed the cable.

I see other cars passing by like a rocket while going at 65pmh so the speedo needle is way off??? I will check this with a GPS today.

Anyways, the odometer is not working at all. This is a bigger problem. (IMG:style_emoticons/default/sad.gif)

Has anyone encountered the same and succeeded to repair??? The speedo works(barely) but odo does not.

Let me know.

Thanks,

kkid (IMG:style_emoticons/default/smile.gif)

[23e Heure]

Hey guys,

So my Creamsicle has finally seen a road after about 1.5 year of jack stands time. (IMG:style_emoticons/default/cheer.gif) Now the speedo didn't work so I changed the cable.

I see other cars passing by like a rocket while going at 65pmh so the speedo needle is way off??? I will check this with a GPS today.

Anyways, the odometer is not working at all. This is a bigger problem. (IMG:style_emoticons/default/sad.gif)

Has anyone encountered the same and succeeded to repair??? The speedo works(barely) but odo does not.

Let me know.

Thanks,

kkid (IMG:style_emoticons/default/smile.gif)

Odometer failure on the VDO gauages is very common. It's the nylon worm gears, they wear out.

See here for how to fix it yourself. Getting the bezel off (and back on) cleanly is your first stress!
Next would be sourcing the replacement gears.

http://www.pelicanparts.com/techarticles/1...eter_Repair.htm



Regarding calibration. What size wheels and tyres are you running?
I have low profile Toyo R888Rs on my car, so the circumference is >10% less than the original stock (balloon) tyres.

So like you my speedo is seriously over reading.

Doesn't bother me too much tho: you only need the rev counter, who cares about the speedo! (IMG:style_emoticons/default/biggrin.gif)

[mepstein]

Download a free app for your phone to tell you speed from your phone gps. Compare against your speedo.

[SirAndy]

Or do what i did and get a 944 speedo which is calibrated correctly for the 225x50x15 street tires i'm running.
(IMG:style_emoticons/default/smile.gif)

[Tom_T]

Since it's a rare LE & you're in the Bay area, it may be worth your while to pull all of your gauges & take them over to Palo Alto Speedo for the speedo/odo repair/resto & to have them restore the rest as needed.

You can certainly do gear rebuilds yourself, if you're at all handy with small stuff.

BTW - you can also check your speedo with the ever more common in CA radar "your speed is XX" signs popping up everywhere. But it may just be that our fellow CA drivers are just more "lead footed"! (IMG:style_emoticons/default/biggrin.gif)

Just a thought! (IMG:style_emoticons/default/beerchug.gif)
Tom
///////

[914itis]

Stay away from North Hollywood , I would take a look at this thread before sending anything to them.
north Hollywood trouble

[timothy_nd28]

I have never seen a worm gear on any 914 speedometer wear out. Chances are the pot metal gear that couples the trip odometer wheels from the main odometer wheels is slipping on the main drive axle. This is definitely a DIY repair job.

The better question is the state of calibration of the speedometer. Is it off compared to your GPS? If so, you will be forced to mail your speedo to the professionals. They have a machine that will degauss the spinning magnet and then re magnetize it so that it reads the correct speed. This can't be done on the kitchen table.

[kkid]

Hey guys,

So my Creamsicle has finally seen a road after about 1.5 year of jack stands time. (IMG:style_emoticons/default/cheer.gif) Now the speedo didn't work so I changed the cable.

I see other cars passing by like a rocket while going at 65pmh so the speedo needle is way off??? I will check this with a GPS today.

Anyways, the odometer is not working at all. This is a bigger problem. (IMG:style_emoticons/default/sad.gif)

Has anyone encountered the same and succeeded to repair??? The speedo works(barely) but odo does not.

Let me know.

Thanks,

kkid (IMG:style_emoticons/default/smile.gif)

Odometer failure on the VDO gauages is very common. It's the nylon worm gears, they wear out.

See here for how to fix it yourself. Getting the bezel off (and back on) cleanly is your first stress!
Next would be sourcing the replacement gears.

http://www.pelicanparts.com/techarticles/1...eter_Repair.htm



Regarding calibration. What size wheels and tyres are you running?
I have low profile Toyo R888Rs on my car, so the circumference is >10% less than the original stock (balloon) tyres.

So like you my speedo is seriously over reading.

Doesn't bother me too much tho: you only need the rev counter, who cares about the speedo! (IMG:style_emoticons/default/biggrin.gif)

I have done a similar repair on my 964 before. I changed the speedo drive gear and its size was super tiny like a 1/4"($17 from PP). Plying open the gauge was a pain and took some time. I had to use a sharpy to hide the mess afterward. I will open up this one to see what's happening inside soon.

I was just a slow driver in the HWY580 in the morning. (IMG:style_emoticons/default/headbang.gif) People were just going like crazy at 80MPH+. My Speedo seems fairly accurate according to my Garmin.

Thanks,

kkid (IMG:style_emoticons/default/smile.gif)

[kkid]

Download a free app for your phone to tell you speed from your phone gps. Compare against your speedo.

Thanks for the suggestion but I might be the only in the world who still uses a flip phone (IMG:style_emoticons/default/wink.gif)

[kkid]

Or do what i did and get a 944 speedo which is calibrated correctly for the 225x50x15 street tires i'm running.
(IMG:style_emoticons/default/smile.gif)

WOW, that tires! In my dream if I go to the gym to gain some arm muscle and most importantly more powerful motor in the back!

[kkid]

Since it's a rare LE & you're in the Bay area, it may be worth your while to pull all of your gauges & take them over to Palo Alto Speedo for the speedo/odo repair/resto & to have them restore the rest as needed.

You can certainly do gear rebuilds yourself, if you're at all handy with small stuff.

Just a thought! (IMG:style_emoticons/default/beerchug.gif)
Tom
///////

I had contacted them for my 964 speedo before. But I think I could buy 2 used 914 speedo for that kind of money.

[kkid]

I have never seen a worm gear on any 914 speedometer wear out. Chances are the pot metal gear that couples the trip odometer wheels from the main odometer wheels is slipping on the main drive axle. This is definitely a DIY repair job.

The better question is the state of calibration of the speedometer. Is it off compared to your GPS? If so, you will be forced to mail your speedo to the professionals. They have a machine that will degauss the spinning magnet and then re magnetize it so that it reads the correct speed. This can't be done on the kitchen table.

I will try to repair myself. It might be challenging to count how many teeth on the broken gear(s) to order a new one.

Thanks,

kkid (IMG:style_emoticons/default/smile.gif)

[timothy_nd28]

You won't need to count teeth or replace any gears. Open it up and post a picture

[PanelBilly]

Have a friend with one of thoses funny smarty phones to down load the thing that measures mph and have them take a spirited ride with you

[kkid]

I have never seen a worm gear on any 914 speedometer wear out. Chances are the pot metal gear that couples the trip odometer wheels from the main odometer wheels is slipping on the main drive axle. This is definitely a DIY repair job.

The better question is the state of calibration of the speedometer. Is it off compared to your GPS? If so, you will be forced to mail your speedo to the professionals. They have a machine that will degauss the spinning magnet and then re magnetize it so that it reads the correct speed. This can't be done on the kitchen table.

OK, I opened up the speedo, but I cant locate the pot metal gear yet. Please direct me where it is and how to get there.
[attachmentid=613
198]
Thanks,

kkid (IMG:style_emoticons/default/smile.gif)

[timothy_nd28]

[timothy_nd28]

Read this thread as well, http://www.914world.com/bbs2/index.php?sho...=310113&hl=

[North Coast Jim]

Hey guys,

So my Creamsicle has finally seen a road after about 1.5 year of jack stands time. (IMG:style_emoticons/default/cheer.gif) Now the speedo didn't work so I changed the cable.

I see other cars passing by like a rocket while going at 65pmh so the speedo needle is way off??? I will check this with a GPS today.

Anyways, the odometer is not working at all. This is a bigger problem. (IMG:style_emoticons/default/sad.gif)

Has anyone encountered the same and succeeded to repair??? The speedo works(barely) but odo does not.

Let me know.

Thanks,

kkid (IMG:style_emoticons/default/smile.gif)

Not trying to hijack the thread but with so many speedo gurus posting here I need to ask the following. My newly rebuilt car has an fully functional speedo - except that the speed needle bounces around about 10 MPH. I average the bounce to get my speed. What to do to fix it ?? Have a new speedometer cable and angle drive at the tranny. Must be a need for maintenance of the bearing within the speedo. Can I fix it ??

Thanks all

[kkid]

Read this thread as well, http://www.914world.com/bbs2/index.php?sho...=310113&hl=

Hey, thanks a lot for pointing me to the right direction. I will do some homework and get back to here.

Have a great Sunday!!

kkid (IMG:style_emoticons/default/smile.gif)

[timothy_nd28]

The speedo cable is long and very springy. If the speedo's input bearing isn't spinning properly, the speedo cable will "wind up" and then release. It will do this over and over and the needle will reflect this, I call it ghosting.

The input bearing was once greased but with age and heat, the grease has turned to wax. Read the link I attached above, it talks about how I clean and regrease this bearing.