tom3
02-12-2007, 01:18 AM
My car was stored for a long time and I've had a bunch of minor electrical issues when I put it back on the road.
I've a tach w/ shift light that behaves weird now:
When I drive, it reads about 500-600 rpm too high, then suddenly snaps back to a regular reading, then back to high, etc.
Then a couple days ago, I had the contact on, but the engine off and the needle could decide between 0 and 600 rpm...
Obviously there was no signal for the rpm input, so I have to rule out noise / bad connection / ground, etc.
Has anyone ever seen that? btw, shaking the wires, hitting the thing, etc doesn't change anything, so it doesn't seem like something loose.
I've a tach w/ shift light that behaves weird now:
When I drive, it reads about 500-600 rpm too high, then suddenly snaps back to a regular reading, then back to high, etc.
Then a couple days ago, I had the contact on, but the engine off and the needle could decide between 0 and 600 rpm...
Obviously there was no signal for the rpm input, so I have to rule out noise / bad connection / ground, etc.
Has anyone ever seen that? btw, shaking the wires, hitting the thing, etc doesn't change anything, so it doesn't seem like something loose.