I got a 99 ram that has got a ton of problems and i dont know where to start. The truck is bone stock except for a fass stock replacement style lift pump. First problem is the truck will over heat even under the lightest loads and when that happens the truck starts to surge when you let off the accelerator pedal. Sometimes is surges so hard up then down the truck will die. Then the truck will randomly not want to start some days it is fine then the next it will crank forever before it starts. The next problem i am having is with the intake heater i have changed the relays probably 3 or 4 times now because they will stick on. The last time it stuck on and got so hot it burned up the heater element. It got so hot it changed the color of the intake elbow and nearly burned the truck down. I have changed the throttle sensor that is up on the engine and the intake air sensor on the back of the engine. The truck is a 5 speed manual. Any help will be greatly appreciated.