Speedo doesnt work

Rodeobob · Post by **Rodeobob** » Wed Apr 26, 2006 4:36 am

Look what i found, its the one on the left.

I grabbed another one out of a Gemini gearbag and its half chewed out, the one on the right, you might be able to pick it up in the picture.
I found another one the same, not sure what it was from but it looked brand new so i shoved that in it.

Just as well i thought to check that the speedo cable was spinning before i started swapping dashes in and out of the car. lol.

The one that was in it had everything working but the speedo stays on 0. So yeah something electrical there, the cable not spinning had nothing to do with it.
The one out of the other black car is kaput. Id say power supply problem. Only the warning lights working.
The dash out of the White Auto works fine so its in the car now and the interior is all back together.

I fitted up the Turbo Timer that was in the car while i was at it. Thought i might as well have it working seeing as it was there. I will do a thread on that tomorrow.

Bob.

Bugle · Post by **Bugle** » Wed Apr 26, 2006 10:21 pm

That happened to my one couldn't find another so I had to use a Gemini one which was 1 tooth bigger I think.. Could it be from a Rodeo or Shuttle?

Rodeobob · Post by **Rodeobob** » Thu Apr 27, 2006 4:36 am

Gemini one should be the same. Same diff ratio and the same rolling diameter for the tyre.

Could have been out of something else. I just found it, if you saw my shed you would understand. lol.

Bob.

Bugle · Post by **Bugle** » Thu Apr 27, 2006 1:11 pm

Nah the Piazza rolling diameter is about 1.5 inches bigger than Gemini.

I tried to get a Piazza one from Holden but no luck. Might be possible to get them for a Rodeo though.

Delivery Boy · Post by **Delivery Boy** » Thu Apr 27, 2006 5:49 pm

ya, piazza have 195/65/R14 and gemini have 175/70/R13 (which is a 195/60/R14)

so geminis have a different rolling diamater, however i think the wheels on my piazza have gemini sized tires on em coz they are same as the ones on my gemini now lol. mmm, time to find some more cheap 18's....

Rick82 · Post by **Rick82** » Thu Apr 27, 2006 8:01 pm

my blue piazza ahd both those problems when i got her, the speedo would blink on and off everynow and then and when it would stay on for a second it would always read 0 so i replaced the gear with piazza number 2 and before i changed the clocks over i pinned out the plugs that go into the instruments and found i was missing three earths now the whole thing works fine

Rodeobob · Post by **Rodeobob** » Fri Apr 28, 2006 1:00 am

Nah the Piazza is meant to have 195/60/14's on it not 65's. Check your tyre plackard.

I got mine out of the shed today. The dash kept cutting in and out when i reved it then it stopped doing it and started working fine.

Went for a quick spin (with the front bumper off), its going ok, the idle is low and it keeps stalling.

Then one or two spark plugs fouled up so i puta new set in and put it away. lol.

Still got a fair few bugs to iron out.

Bob.

Bugle · Post by **Bugle** » Fri Apr 28, 2006 1:31 am

Yeah 195/60, Gemini is a bit smaller enough for them to have to add a tooth to the drive. The speedo was about 5% off with the Gemini one..

Rodeobob · Post by **Rodeobob** » Fri Apr 28, 2006 1:40 am

Bugle wrote:Yeah 195/60, Gemini is a bit smaller enough for them to have to add a tooth to the drive. The speedo was about 5% off with the Gemini one..

Ive got 205/60/15's on the back of mine, that will be out a bit me thinks. lol.

Bob.

Post by **wedgenut** » Fri Apr 28, 2006 6:26 pm

I was looking at a site not long ago that all the percentage changes for different tyre combo's. If I can find it again i will post the link

Post by **wedgenut** » Fri Apr 28, 2006 7:08 pm

Here are a couple of links that might help with tyre choices

http://www.dsm.org/tools/tiresize.htm

http://www.maserati-rc.org/techtips/Techtip044.htm