defender 200tdi temp. gauge

hi guys yesterday i changed the bulb of my temperature gauge on my ninety and when i fitted back the dash i switched on the lights and all worked fine. after a while i switched the ignition and the tempretaure guage needle went straight up all the way to the red zone...any ideas of what the problem is? before replacing the bulb the gauge worked fine....

sensing wire rubbed through or shorted to earth-possibly

al wirings are fitted in place and there are no shorts can it be the sensor ??

feed wire definately shorting out to earth. have you tested it with multimeter to check for short?

multimeter checked the wirings everything is fine...when i remove the connector from the sender the gauge needle goes down so i am going to get a new sensor/sender tomorrow to try to figure it out

marwell said:

multimeter checked the wirings everything is fine...when i remove the connector from the sender the gauge needle goes down so i am going to get a new sensor/sender tomorrow to try to figure it out

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so what was the end result?

I had the same problem a couple of weeks ago on my 200tdi. I replaced the sender but it was actually the gauge that was goosed.

Needalandy said:

I had the same problem a couple of weeks ago on my 200tdi. I replaced the sender but it was actually the gauge that was goosed.

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I have replaced censor switch and gauge and still showing fully in red

marwell said:

multimeter ....so i am going to get a new sensor/sender tomorrow to try to figure it out

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did that work then ??

skint-as-usual said:

did that work then ??

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That's what I asked,the post was over a month ago,I have the same problem I have renewed both that's why I asked

rogerboy said:

That's what I asked,...,I have the same problem

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Ah well we await the same response then (cured or not cured)

If you have replaced sensor and gauge then it's either a) wiring issue of b) your engine is actually overheating.....

flat said:

If you have replaced sensor and gauge then it's either a) wiring issue of b) your engine is actually overheating.....

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Yes must be a wiring issue