Hi, I hope someone has some insight on this (otherwise my '00 Seicento is headed for the breakers yard :'( ). Sometimes when I brake, the power steering light comes on on the dash, the power steering fails, and the speedometer goes to zero. Usually when I take my foot off the brake, normal service resumes (although the speedometer sometimes doesn't kick back in for a while). I've been told by the NCT that my brake hoses are corroded, could there be a connection?
Thanks for any help

I doubt if the brakes have much to do with it -- the action of braking might, though.

The speedo and the power steering both take an input from the speed senoror mounted on top of the differential. Could be that braking is making or breaking one of the earth contacts. Find all the earth points (they're detailed in the Seicento Technical Manual, free in the Downloads section), scratch them clean, cover with vaseline, tighten up. Do the same to the connector on the speed sensor.

Also check the gearbag oil level.

Does the car have ABS?

Cheers

D

Thanks for the replies, I'll check out those tips tomorrow or Fri + let you know how it goes.

No ABS on this model.

Cheers,
B

Have had the exact same problem, turned out to be a bad connection on the speedometer sensor (rear of gearbox)

Thanks J.R, did you need to replace the whole speedometer sensor?
B

Turned out to be a bad connector and just needed rechecking and a wriggle. But they can fail which may be your case.

I have replaced sensor on gearbox and speedo stil does not work, have tried a new speedo and sensor not working with either, can you help?

As Rallycinq says, does car have ABS and check gearbox oil level (really).

no ABS, he already said that

Mikeyboy Scotto said:

I have replaced sensor on gearbox and speedo stil does not work, have tried a new speedo and sensor not working with either, can you help?

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Remove the door pillar covers and check the wiring conector pins are ok.

blu73 said:

no ABS, he already said that

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Different poster, though (or dual identity )

lol, i didn't even notice. Fail

Thanks for the help everybody, my issue appears to have been resolved by a new speed sensor. My seicento lives to fight another day!

HI
I have the same problem as the OP

Where is a good place to buy the sensor please?

Why is the level of gearbox oil important?

George

gbclassic said:

HI
I have the same problem as the OP

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Wilcommen. First, make sure it doesn't have ABS (fortunately mainly confined to Schumakers)

gbclassic said:

Where is a good place to buy the sensor please?

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Cheapest place is probably eurocarcare in Derby. Talk to one of the Micks, mention the forum.

gbclassic said:

Why is the level of gearbox oil important?

George

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Because -- assuming no ABS (in which case it's driven from the ABS) it's driven off the differential, so non functioning speedo can be a sign that the gearbox is dying due to low oil level.

ABS or NON-ABS still use the same sensor on the gearbox for the speedo and power steering.

Hi Guys, it seems to me that it is worth changing the speed sensor even though Big Mick tells me it is over 40 quid.

Can anyone point me at a picture of the location please? I have looked and there is no obvious sensor and there are a few possibles for a connector between the sensor and the loom. A pointer to a picture of the right connect or would help as well

Thanks
George

You can't miss it. It' screwed into the back of the gearbox above the dif. Some plastic crap that wears out after a x million revolutions due to cheap design thought, costing pence to build but a leg to buy,