have u tried putting in a new fuel filter
Yes i have that was my first guess
That depends on what is wrong with it, and how much money you want to put into the vehicle.
The RPM is not working on 2002 chevy impala LS. transmission and engine sounds good- no problem. what's wrong
What vehicle is this on? Fuel injected or carburator? Engine size?
Most likely one of the bushings in the suspension moving a bit when you hit a bump, track it down and tighten it if you can. also check the shocks they will squeak when going bad
Check the crank position to make sure that it is sending power to the coil pack. The inability to go forwards when the vehicle is running sounds like a problem internally with the transmission an it may need a rebuild.
Need to check the EGR valve. It sounds like it is opening to quick.
Not likely sounds like a blown head gasket
If the oil light comes on and an alarm sounds, it is usually an issue of a low oil pressure warning. This could mean that oil is leaking from the vehicle or that the oil pump is not working.
it sounds wrong and its incorrect english
What happened to this vehicle?
Sounds like your tie rod ends have come undone. They will need to be reconnected and the car alignment done before you can drive it.
A fuel pressure regulator on a 4.3L can leak undetected but cause the vehicle to fail emissions.