400 dying under load

[SwanJack]

Car hasnt been run over the winter. Car idles and moves off fine. When i accelerate to just about 3000 rpm in second / third, the car just dies and starts to coast, rev counter doesn't drop quickly, a few backfires and it coughs and splutters. If i change down it seems to pick up a bit just to run like a pig until it dies again. If i come to a halt car then idles well pulls off ok and then does it all over again. New plugs, dizzy cap, fuel pump and rotor arm last year. Does this sound like coil and / or ignition amp, or anything else??? Thanks

Edited by SwanJack on Saturday 25th March 17:39

Edited by SwanJack on Saturday 25th March 17:41

[SwanJack]

Couple of years, holds charge well.

[SwanJack]

Thanks for the replies, not had a chance to do anything today