Page 1 of 1
Speedo reading arse ways!
Posted: Mon Jan 28, 2013 11:39 pm
by StanO'Toole
When sitting on a motorway at 3000 rpm the speedo is saying I'm doing 70 odd kilometers when I had a friend sitting beside me and his car was doing 100 kilometers... Stud is a jap import so it has a kilometer speedo as standard but what could be causing this false reading?
Could the speedo cable be lose or fecked? Wrong speedo cable? (If theres different types?) Never really realised as I haven't really been driving Stud.
Re: Speedo reading arse ways!
Posted: Tue Jan 29, 2013 12:51 am
by joeyfinneran
Are you running 13" ?
Wheel size can make a difference but usualy not that much but still could be effecting it
Re: Speedo reading arse ways!
Posted: Tue Jan 29, 2013 9:51 am
by The Marcos Graveyard
You can work out the exact speed from the rev counter if you have the diff ratio and tyre size, there should also be an TPM number on the speedo which should confirm the calculation.
Re: Speedo reading arse ways!
Posted: Tue Jan 29, 2013 3:21 pm
by StanO'Toole
joeyfinneran wrote:Are you running 13" ?
Wheel size can make a difference but usualy not that much but still could be effecting it
Running the 12's dude so the problems not there... I'v worked out what speed I'm doing from the revs but I just want to sort the problem
Re: Speedo reading arse ways!
Posted: Tue Jan 29, 2013 3:24 pm
by The Marcos Graveyard
It's possible to change the ratios in the speedo drive on the gearbox .
Re: Speedo reading arse ways!
Posted: Wed Jan 30, 2013 10:17 pm
by kerryminigringo