speedo fast an wobble

[Barkla]

hi had a bit of look but couldn't seem to find anything ive got an issue with my speedo on my r32 Gtr ive replaced to speedo cable but its still reeding fast and wobbling up to about 60kph it reads 122kph at 110kph and about 90kph at 80kph checked it with two different GPS units. just wondering if there are any calibration screws or around the gauge. the car is running original wheels an tyre sizes. 

thanks 

[GTSBoy]

Welllllll, if it's not the cable, then it's either the drive gear or the speedo head.

Where the fault is, that is.

Have you tried driving the cable from the gearbox end with a cordless drill?

[Duncan]

I'm not really sure about the "fast and wobbly" to 60klm/h bit, but many nissans are calibrated from factory to read 10% high, primarily to piss off everybody that ever needs to drive near or at the speed limit. So I suspect reading 90 at 80 and 122 at 100 are perfectly normal.

There are different speedo drives for different diff ratios (eg, GTS4 was 10% shorter and so are automatics I think), so that is one option if it bugs you too much

[blind_elk]

I had a similar "problem" in my GTS4. The cure - remove the instrument cluster, expose the speedo needle and VEEERRRRYYY carefully move the needle on the spindle. (Manually rotate the needle to, say 120k, lock the drive side in place and gently rotate the needle back to 100.)

[niZmO_Man]

From memory, my speedo was wobbling before the cable broke. Replacement cable fixed that, but that may be harder to find these days.

As for accuracy, what Duncan said. Reads about +10 km/h above 90. I went with slightly larger diameter tyres. I think I also moved the needle slightly.

[blind_elk]

On 9/23/2021 at 9:27 AM, blind_elk said:

I had a similar "problem" in my GTS4. The cure - remove the instrument cluster, expose the speedo needle and VEEERRRRYYY carefully move the needle on the spindle. (Manually rotate the needle to, say 120k, lock the drive side in place and gently rotate the needle back to 100.)

... back to 110)