Ok when I stop at a read light it idles find but when I go to take off it wants to die and it back fires I have to ease on the accelerator but after like 20 mph it runs fine dies any know what the problem might be

 

What year? sounds like you have a fuel mixture problem or weak spark. Have you replaced plugs/wires/rotor/cap etc anytime in the past 5 years? How do the intake air boots and vacuum lines look? Any other symptoms?

 

It’s my first 240 I just bought it the guy I bought it from said it was kept up with could it be the gas I put in it when I got is it was a sketchy looking place it’s a 89 volvo

 

small air leaks in the intake air path can behave like that. I had that problem on a 1990 mercedes, was the rubber seals around the injectors where they go into the intake manifold. you can use an unlit propane blow-torch to 'flood' the area with propane, if you hear the idle change, odds are there'sa leak. start around the injectors, then around the throttle body, and around the plastic pipe that connects the thorttle body to the MAF (mass air flow meter, also called an AMM)

 

We’re is the mass air flow (I know dumb question)

 

the MAF is on the output of the air filter box., inline with the large diameter air tube that goes to the throttle body.