Chris Perkins
New Member
Hello,
My speedo stopped working the other day. It was erratic for a week or so and now rarely budges (occasionally it will move a couple of mm for a second). It's the electronic type and the car is a 1990 model and LHD middle eastern spec.
The car is now with my competent but non LR specialist mechanic in Germany.
Other symptoms were that the exclamation mark warning light came on and that the idling wasn't quite right and the car often dies at traffic lights etc.
I read that this indicates a problem with the speed sensor transducer. This has been removed and when it's turned it changes resistance. Does this mean that it works? I know that it should shoot 12v 6 times per turn of the wheel. Obviously it won't send any volts if is has no power to it!
My mechanic has asked me to find out more about it, as he can't speak English and German language support is lacking for these old girls! The next thing he wants to check is to see if the transducer shaft is being turned. Assuming that it is, where exactly do the wires go after that. One is green the other is yellow. He says they disappear into a big chucky mass of cables.
Where do we look?
thanks so much.
My speedo stopped working the other day. It was erratic for a week or so and now rarely budges (occasionally it will move a couple of mm for a second). It's the electronic type and the car is a 1990 model and LHD middle eastern spec.
The car is now with my competent but non LR specialist mechanic in Germany.
Other symptoms were that the exclamation mark warning light came on and that the idling wasn't quite right and the car often dies at traffic lights etc.
I read that this indicates a problem with the speed sensor transducer. This has been removed and when it's turned it changes resistance. Does this mean that it works? I know that it should shoot 12v 6 times per turn of the wheel. Obviously it won't send any volts if is has no power to it!
My mechanic has asked me to find out more about it, as he can't speak English and German language support is lacking for these old girls! The next thing he wants to check is to see if the transducer shaft is being turned. Assuming that it is, where exactly do the wires go after that. One is green the other is yellow. He says they disappear into a big chucky mass of cables.
Where do we look?
thanks so much.
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