Speedo problem ?

[coolchris]

Hi guys
My speedo has decided to start playing up.When i pull away it goes right past the 200 mark then when at a standstill drops back to 0.Any of you know what the problem may be?

Cheers Chris

[jdearden]

yeah you have a really fast noble

[R0162]

speedo sensor, front wheel, mine is front drivers side, get it changed because it is adding false mileage onto your car.

[coolchris]

well all the other gauges work fine the needle staggers on the way around the gauge to the 200 mark.

[TuxMan]

Chris 5 speed or 6 ???

[swampy56]

Check the distance that the sensor is from the rotating part, should be very close!

[coolchris]

Im sure i had it do this a couple of years back and it sorted itself out.its a 5 speed Tuxman.My mechanic said the sensor could be on the gearbox?

[andygtt]

Sounds like the sensor... On 5 speed the sensor is in the gearbox not front wheel.

[AMG Merc]

Hi Chris, whilst it isn't working, and assuming you've an iPhone or Android handset, use a phone speeed app or a SatNav app to check your speed.

[coolchris]

Hi Rob
Hope your well yes thats what im going to do for the time being just put the trusty sat nav on.Does anybody know a part number for the sensor on the gearbox please?

Cheers Chris

[TuxMan]

Hi Chris speed sensor is on the top of the gearbox , when washed the water tends to drip all over the sensor , suggest remove and clean then refit checking wires while you are at it . Normally sorts mine out :-)

[coolchris]

Great thanks for the helpfull advice Tuxman.Will give it a go by the weekend and let you know how i get on

thanks Chris

[Scooby P1]

Just before I dropped my ex-noble off 'to be stolen' it was doing something very similar on the A303. Satnav said I was north of 80mph but the speedo flickered and then sat at 40mph before going back to normal after 5 mins.
Never got to the root of the problem, I just put it down to Azure blue quirkiness!!
It was a 2.5 same as yours so I'd take Tux's advice!

[coolchris]

Just a quick update toom the car out on Thursday evening and speedo worked fine.Prob some moisture got in and had dried out.Thanks for all the advice guys

Cheers Chris

[TuxMan]

Yep mine does the same when it gets wet !!! I call it character :-)