Buy a Toyota or a Nissan! Seriously though, you describe a rattle while stopped with engine under strain. Some places to look: catalytic converter shield. Thin sheet metal that's over converter as a heat shield. Notorious for rusting and rattling. ALSO- check other parts of the exhuast...clamps, hangers... If you decide to stick your head under the car to find out, make sure each wheel has a chock, front and back, and the emergency brake is on! Good Luck! <<<ADR>>>
The 2001 Ford Focus has front wheel drive.
King of the Rattling Spirits was created in 2001.
The 2001 Chevy Cavalier may need a valve adjustment. Loud valves tend to create a clacking noise which could mimic popcorn popping.
They are ALL FWD.
Noise is common from any engine, the TYPE of noise is what you should worry about. Is it a knocking noise? hum? squeak? rattle?
Check the fuse.
See the answer for "How do you replace the drive belt in a 2000 Ford Focus?". The procedure is the same.
Check your tensioner
Something's rattling around inside your door. You'll need to pull the door panel off and remove/repair whatever it is.
I have a 2001 I had the same problem when driven through rough roads and railroad tracks, I replaced the front struts and that solved the problem. I have a 2000 that rattles too. Looking for the answer.
My 2001 Tahoe did the same thing. Everytime I hit rough road, speed bumps, or even a tight turn, I would hear a rattle in front and a vibration in the steering wheel. I asked a mechanic at Tires Plus to look at it and he said the steering column shaft was the culprit. $125 later (which included labor), problem was solved.
The Noise We Make was created in 2001.