That's called the tachometer. You didn't provide much information, but maybe it only happens when you (or the automatic transmission, if you have an automatic) shift gears. If that's the case, it's normal. Shifting to a different gear at any given speed changes the RPM's of the engine. If it happens at times other than when shifting, something else is wrong.
It goes up while driving and down when you're idle....that's normal
You could have blown your tire or it could have gone flat.
Simple answer is the alternator
Tire out of balance is the most likely cause. Can also be a bent wheel.
What can cause the RPM on a car to jump while driving is a problem with the transmission. It could be a problem with the gears in the transmission itself.
Some jurisdictions don't allow to be talking or texting while driving because it could cause accidents. You will have to check your local laws.
could be coil
could be the timing belt
Usually the gauge in on the dashboard with all the other gauges. That way you can read it while driving.
drunk driving in Florida is cosidered as someone drinking under age or drinking achohol while driving (wich could cause severe crashes)
There are several complications that can cause a 1999 Dodge Caravan to shut off while driving. Most common issues include ignition problems or fuel delivery problem.
Most likely cause is a failed sending unit in the tank.
Check for good fuel flow. Clogged filter can cause this. A bad fuel pump could cause this.
lug nut were loose
Was the volt gauge working? If it showed no response when driving then the charge/ign fuse could be blown and you were running off battery power till it ran down.
it could be the main assembly relay under the drivers kickpanel
Because you could get killed or arrested since you could cause a car crash! Dumb person -_-"
my oil pressure goes up while I'm driving and back down when I stop what could cause that
One reason a 1998 Cadillac Deville would cut off while driving could be the fuel pump or the car is out of fuel. Another reason could be the spark plugs.
probably not the tire, but the bearings. misalignment can cause vibrations - making all sorts of squeaks.
sounds like bearings in the differntial
What would cause my VW golf to cut out whist driving
No. It is a distraction and could cause an injury or a collision. Also, using a cell phone without a headset or hands-free adapter while driving is illegal in many places.
A bad tire can cause your 2002 Honda Civic to jerk while driving. A bad ball joint can also cause this issue.