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after power washing my 406 1.9 diesel engine the rev counter has stopped working properly does anybody have any ideas what is wrong with it or even where it gets its feed from
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Argh!
Don't know why it does it, but mine (same car) sticks at 1,800 rpm. Sometimes it clears itself, but the problem always comes back pretty quickly. Since the rev counter problem began to manifest itself, the speedo has started sticking (most often at 40 mph, though often at other speeds), moving up and down to get to the sticky speed.
I suspect, from online research, that it's due to bad soldering inside the instrument panel causing an intermittent connection (knocking the glass generally cures the speedo problem) but I'm not entirely certain.
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