Timing Chain

Where is the timing chain located at on a 1996 Pontiac Grand AM, 2.4L 4cylinder engine? How do i replace it and what tools will I need?

Inside the timing chain case. It's on the accesory end of the engine. You'll have to remove the harmonic balancer and then it's a black cover with lots of bolts going all the way around. You pull the black metal cover and some gaskets off and you'll be able to see the chain. You might need to remove some other things before the case cover, I don't remember.

To change the chain, you'll need to relieve pressure on the tensioner by squeezing it down using a screwdriver as a lever. After it is clicked all the way down, you should be able to pull the plastic chain guides and remove the chain. When you put on the new chain (make sure you don't turn camshafts while chain is off), make sure the copper-plated linkage is facing outward. After you've put on the new chain, you can reinstall the guides, and then push on the tensioner / slide off simoltaneously with a screw driver, and it should release, and tension the chain again.

This is all I can really remember from when I did it - I would really recommend getting a haynes manual or something.

The timing chain is located on the front of the engine. It would be on the passenger side of the vehicle. If you truly want to change it yourself I would suggest you get a book that explains the process in detail as it is too difficult a procedure to describe here. As for tools you will need an engine support tool that is not a common tool box item.

What Ridenour says is true. I posted after he did but he suggests as I do that you get a manual to explain the entire process.

How can you tell if you need a new timing chain?

If the chain is broken, worn, stretched, or jumped time you need a new chain. Symptoms are a engine that won't start or runs rough even though the fuel system and ignition system are in good condition. The others have suggested a manual but seeing that you have at least two posts asking about a badly running car I suggest a manual and to find yourself someone that knows about cars so they can help and teach you about mechanics and other things automotive.

What would you say would be running rough?

Running rough is when the engine doesn't run smooth or sound like its running smoothly. It's not hard to notice, actually it usually very easy to notice. Why all the questions? Broken car, auto shop class, curious george?

well, we just are trying to find out some things about our car. And so far everyone is helping great!
Our engine shifts rough? Any idea what could be wrong?