Speedo failed today

bramboss · Nov 27, 2012

Not many miles after an MoT (passed Phew). Coincidence probably.
N Reg Disco TD Auto
Reading old posts, it seems likely cause is the sensor mounted on the transfer box so I'll get under and have a look at the wires and plug as soon as I can. If they look OK, is there any way of testing the sensor before forking out for a new one?
Seems the price varies a lot from different suppliers:

http://www.island-4x4.co.uk/speedometer-sensor-c2s2688-p-17242.html

YBE100540 TRANSDUCER SPEED SENSOR | Range Rover Classic 1992-1994: Electrical | shop | www.lrseries.com | L. R. Series

YBE100540 - SPEED TRANSDUCER 90/110 V8 DISCOVERY 1 95 ON - Defender 90/110 Parts & Discovery 1 Parts

Meanwhile I'll be driving without a speedo and having to use the tacho to give me speed instead. What engine speed corresponds to 30 mph with the box in top gear? I reckon it must be about 1250 rpm, does this sound right?
Thanks for any help from you landy lads.
Bramboss

discool · Nov 28, 2012

Yes Google testing speedometer sensor

jamesmartin · Nov 28, 2012

bramboss said:
Not many miles after an MoT (passed Phew). Coincidence probably.
N Reg Disco TD Auto
Reading old posts, it seems likely cause is the sensor mounted on the transfer box so I'll get under and have a look at the wires and plug as soon as I can. If they look OK, is there any way of testing the sensor before forking out for a new one?
Seems the price varies a lot from different suppliers:

http://www.island-4x4.co.uk/speedometer-sensor-c2s2688-p-17242.html

YBE100540 TRANSDUCER SPEED SENSOR | Range Rover Classic 1992-1994: Electrical | shop | www.lrseries.com | L. R. Series

YBE100540 - SPEED TRANSDUCER 90/110 V8 DISCOVERY 1 95 ON - Defender 90/110 Parts & Discovery 1 Parts

Meanwhile I'll be driving without a speedo and having to use the tacho to give me speed instead. What engine speed corresponds to 30 mph with the box in top gear? I reckon it must be about 1250 rpm, does this sound right?
Thanks for any help from you landy lads.
Bramboss

they are a common failure ,ive got a used one you can try

disco147 · Nov 28, 2012

30mph in 4th gear is 1500 rpm... my speedo is having a little rest at the moment n worked that one out... the others I'm not to worried about, dual carriage ways I sit at about 2250 which is about 55

Bump · Nov 28, 2012

disco147 said:
30mph in 4th gear is 1500 rpm... my speedo is having a little rest at the moment n worked that one out... the others I'm not to worried about, dual carriage ways I sit at about 2250 which is about 55

depending on the size of your wheels.

My speedo is having a rest too, i worked it out for 30, 40, 50 and 70 with both sets of wheels - although i run the sat nav on long journey's to help out

(2500 is near enough 60 on "normal" wheels and 70 on the mud tyres)

disco147 · Nov 28, 2012

oh yea... normal wheels! my bad

whats what I use my sat nav for too... I find they show slower than speedo's though so I drop off a bit when I see camera's just incase

bramboss · Nov 28, 2012

Well b****r me, it's working again today! But I reckon it's bound to fail again soon so thanks for all your tips, they'll soon enough come in handy.
Googled on testing the sensor and it looks easy. Will get back to JamesMartin if I then need a used one on the cheap.
Cheers.

discool · Nov 28, 2012

The connecting plug may not be as waterproof as it should be, so unplug clean and replace.

Speedo failed today

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bramboss

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