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factor
06-16-2008, 06:01 PM
91 chevy 2500
350 4l80e np241c

my speedo on the dash jumps around with the key in on position
when its running behaves normal except for some small jumps that dont match speed or rmp at the same time as the tach(tach only moves when running)
sometimes speedo will sit at max with the key in the on position
when this happens it is hard to turn over like low voltage
tested the battery is good
what could this be?:dontknow:

Burlinator
06-16-2008, 06:42 PM
sounds like theres a short somewhere, maybe it's rubbing on something could be why it's an intermittent problem :dontknow:

pumpkin
06-16-2008, 08:03 PM
I'ld bet a bad ground somewhere.

epic3
06-16-2008, 09:48 PM
I'd say its a bad ground

factor
06-16-2008, 10:03 PM
shut it phil ya fricking parrot

epic3
06-16-2008, 10:17 PM
OK I'll say what was on my mind at the time



Indian Car

factor
06-17-2008, 07:42 AM
that's better still useless weird

Growly Gorilla
06-17-2008, 07:44 AM
Might be the ignition switch.