Gauges are generally tuned to tension on wires, if they gets tweaked the gauges can easily become faulty.
alternator could be going out..
A bad ground wire will cause your instrument panel gauges to bounce up and down. The ground wire can be loose or it can be corroded.
Waterpump
Descending is going down, and ascending is going up.
Could be the sending unit or a problem with the wiring if electrical.
its going down. i think.
dat boy hot- up and down
It is going up
Depends on the person
If someone Is Descending they are Going Down.
In drivng a jacked up truck, my gauges very seldom read right. For one, if you have a lifted or lowered car or truck, the gausges are going to be slightly off. 2. your alternador may be going bad or have a loose battery wire.
Going up because of migration