Does a timing Chain on a 1993 need to be replaced?

1993 Nissan Altima

I was hearing a rattling sound coming from the engine. sounded like their was something jumping up and down in a confined space. Car was driving fine and then startes slowing down and died under a light. Turned Key and started car back up and the car turned over and drove home fine. Went out 20 minutes later and the car refuse to start just made this sound like it was about to start but did not. let car alone and it started 2 days later turned over but when I hit the accelerator it does not accelerate and it also dies within 25 seconds or so of starting and it sounds like it is backfiring (those popping Sounds)

mechanic diagnosis: Change timing belt and it will cost about 1100 dollars. I have no idea if he is taking me for a ride ..Please advise accordingly.
Does a timing Chain on a 1993 need to be replaced?
I would expect it has a lot of miles on it. That being the case, you need to replace the timing belt on most cars at about 50K. It may have done significant damage to the engine. I think he is definitely overcharging if all he is doing is changing the belt for $1100. Talk to him and see what all is included. You may want to consider installing a good used engine if you want to keep the car. I would also not try to start it again until it is fixed as you may be able to save the current engine.
Does a timing Chain on a 1993 need to be replaced?
If it is the timing belt don't try to run it anymore, you may do more damage. I'm not sure on the car how long it takes but some cars take awhile to even get to the timing belt. Alot of parts in the way.
Find another mechanic.