My car is having this wierd problem.First of all it is a 1986 Ford Bronco II, it starts fine and drives fine for the first 10min although now it seems not to have very good power when running, anyway, after 10min the car loses power the rpm drops, starts driving very jerky speed going up and down and the car dies whether at a stop or while driving. The car starts back up but when put in drive it begins to die again I hit the gas and sometimes it starts to go and then dies and sometime it goes but no matter how hard I push the gas pedal the car wont pick up speed, like the gas flow is restricted. This problem started about two months ago, I recently had the tranny overhauled, then they said it was the engine so I bought a brand new one and they put that in, I've replaced the radiator and the low pressure fuel pump, the fuel filter, alternator, carbuerator, water pump, air filter, had the vacuum lines redone. I am getting frustrated as are the mechanics but I have put soo much money into this. Any idea what the problem could be, they seem to think it may be electrical now. Thankyou