Dead Speedo

[JAZ 34]

Hi guys,

Speedo dead!

Symptoms.....Had noticed over the last few weeks that when starting the car I engaged the key with 2 clicks then de-armed the immobiliser and tracker and noticed the speedo waltzing up and down before the engine started.

But tonight, before starting the engine I did the same again and the speedo shot up to 200 MPH and died before starting. Started the car and did 50 miles on the road and all dead, nothing, zilch, zero on the MPH. RPM dial is OK.

Any idea's guys?

Many thanks.

JAZ 34

[m12_nathan]

speed sensor on the front wheel

[joust]

Easy fix, just take the old one out and put a new one in. You can't miss it - follow the tie wrapped wire on the front wishbone(front nearside normally) and you'll find it.

J

[Ash M400]

Mine did the same, it is not the wheel sensor, it is the speedo.

If it is the wheel sensor nothing registers on the speedo, if it is the speedo, it fails like yours has.

It is really easy to replace.

There is a test you can do to check if I remeber correctly. Take the nearside front wheel off, get some black card, turn on the ignition. Now I am cr@p at this so here goes. Place the card between the sensor and the castle nut. Sorry, thick at this, but you should see it on the wheel. If you see light as you spin the wheel, its the speedo.

I know await joust to expalain this properly.

[ThatPhilBrettGuy]

Buzz out the cable as well. A few of these seemed to have gone as well it seems. I certainly wouldn't want to spend out on a new sensor, let along a new speedo before I'd checked the simple things.

[JAZ 34]

Thanks Guys,

When I click the key and the electrics come on before the engine start, the needle does blip very very slightly.

JAZ 34

[Ash M400]

JAZ 34 said:

Thanks Guys,

When I click the key and the electrics come on before the engine start, the needle does blip very very slightly.

JAZ 34

Yep, exactly what I had.

[JAZ 34]

Thanks Ash,

Does anyone know the best place to order from? Factory?

[ThatPhilBrettGuy]

Ash M400 said:

JAZ 34 said:

Thanks Guys,

When I click the key and the electrics come on before the engine start, the needle does blip very very slightly.

JAZ 34

Yep, exactly what I had.

Er, mine does this too, but works perfectly

[JAZ 34]

ThatPhilBrettGuy said:

[quote=Ash M400][quote=JAZ 34]Thanks Guys,

When I click the key and the electrics come on before the engine start, the needle does blip very very slightly.

JAZ 34

The needle does blip then when I start the car nothing at all.

[JAZ 34]

Also.... the digital mile counter and trip counter are static. Is this normal when the Speedo dies?

[ThatPhilBrettGuy]

JAZ 34 said:

Also.... the digital mile counter and trip counter are static. Is this normal when the Speedo dies?

Yes, but don't get fixated on it being the speedo. It's more likely to be the sensor on the wheel or the cable from it.

[JAZ 34]

Thanks,

Does anyone know what the specs / costs are on the sensor and where I can best buy one please? Factory?

JAZ 34

[mr noble]

JAZ 34 said:

Also.... the digital mile counter and trip counter are static. Is this normal when the Speedo dies?

Might explain a few of the 3 year old cars having 3k miles and so on!

[Loose]

My Speedo has just died on the M3 on the way to Goodwood yesterday..
Symptons;- Speedo began to oscillate wildly between 80mph and 140mph for while and about a mile later it died..
I have not seen any movement in the speedo before I started the engine at any time..
Does this mean it's the wheel sensor?
Any advice would be appreciated.

[obes]

Most likely the speed sensor mate. (its on the gearbox in really early cars).
If your's is in the wheel, try taking a hairdryer to it !

[JAZ 34]

Obes,

Silly question and sorry for it but what good does a hairdryer do?

Regards,

JAZ 34

[V6GTO]

JAZ...it dries it out, I think the problem maybe an internal short.

Martin.

[nickytwohats]

Mine did exactly this - the boys at Vegantune fixed it in about 10 minutes.

[obes]

it gets water in it mate