the tachometer only works when I hit high revs

1999 VAUXHALL CORSA
68,000 MILES
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SAMFISH
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Hi I have a Vauxhall corsa 1.2 Vreg. The rev counter doesn't work untill you get up to hi revs. It works perfectly on a hot day.The same with the electric window in the drivers side. Will only go down a bit at a time then on a hot day works perfect. Can you help please
Apr 8, 2012 at 12:31 PM
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ASEMASTER6371
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sounds like the tach needs to be replaced. a scan tool can verify an rpm reading from the pcm. if it has it, then it is a faulty tach.

as far as the window, i would replace the window motor.

Roy
Apr 8, 2012 at 1:16 PM