1996 goes dead at light

I have a friend who has a 1996 impala ss that goes dead at stop lights or pretty much any time you get off the gas. He says the car run fine other that that problem. He's look to sell the car and i would like to buy but would like to know what kind of problems can i expect to find with this issue.

I have a friend who has a 1996 impala ss that goes dead at stop lights or pretty much any time you get off the gas. He says the car run fine other that that problem. He's look to sell the car and i would like to buy but would like to know what kind of problems can i expect to find with this issue.


I own 96 impala give details like mileage condition and maintenence history..

I also have the oem repair manuals..