Good NLs.

My car has not been idling with the ignition on. It starts and goes off after a while and if it manages not to go off, as soon as i engage the gear and i am about to accelerate the car the engine just goes off. This is really embarrassing for me. If my battery is fully charged after a while it does not have the strength to start the engine again,its finds it hard to start when engine is warm
I use a 1990 BMW 3 series,

Also, i am yet to fix the thermostat, and the car tends to want to overheat.

Your honest responses to this complaints are highly awaited