typically a vibration due to worn, bent parts or out of tune engine under a specific work load.
If you mean why the difference in RPMs between idling and driving, the difference is due to the engine load; At idle, the engine isn't really doing much other than staying running, but under load (driving) the engine has to put its power out to the drivetrain, hence the symptomatic loss of engine speed (RPMs).
Could be fuel or electrical problem. Does the car start and run okay the first time you start it? Does the engine run smoothly under load?
You probably have a cracked engine block and engine coolant is mixing with engine oil.
That's good; it means when under a load, the engine is shifting to a lower gear like it is supposed to do.
There is something wrong with it. Or you have one serious engine under the hood
the value to load the freon for a 1997 grand am is under the engine you would have to lift the front of car up and you should see the value on the right passenger side
engine is the big metal thing under the hood that makes the car move. it needs oil and gas to run
My first guess would be the front end alignment and possibly the brakes. During braking, you engine and transmission are not under a load so they should not cause any vibration.
No- it is designed to be accessible in case of needed repairs (assuming you mean car) it is under hood on most
some cars are designed to turn off comp when kicked into passing gear to give you more power
The engine is overloaded in case it of generator set or any other load and in case of a car the vehicle is not engage in lower gear as per load and engine rpm.