In a message dated 95-09-09 04:59:26 EDT, EPX120(at)aol.com writes:
> Sometimes when the speedo is reading 70 the tach reads 3500 ( I
>have a 356 rear), a little later I notice that the speedo is still reading
70
>but the tach now reads 4200.
I've had a similar problem with my tach. Often just as the car is almost
warmed up, the tach will begin to read about 15% over actual, then after
another ten minutes it will suddenly read accurately again. The guage shows
no other obvious problems, like the needle sticking, jerking or wildly waving
etc. What component(s) would change the reading as the car warms up?
DS
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