Ranger 4.0l electrical problems?
One morning i started up the 02 fx4 and it was working fine, all of the sudden the motor sputtered some and quit. i saw that the battery was dead and i replaced the battery because its a 8 year old optima battery. now i think that the re manufactured gm alternator is weak, i got in the new battery and detached the battery after i started it to see if the alternator would keep the truck running, it did fine, but the gauges in the truck started to wiggle and the light would flicker a little but not a lot. i revved the engine, sounded fine but when i hooked the battery back up the engine didn't change rpm's but i dead hear a small woosh sound. like the air intake was rapidly sucking in air but again, the engine never went above idle. could possibly the alternator be weak and actually sucking energy from the battery? i don't want to replace my alternator unless i need to. Also i checked under the cover that says 4.0 to make sure my throttle cable isn't loose, (which it isn't, its just the pedal) and i noticed a red plastic tipped wire the fed through a tube into a metal box that said 02 ranger gas or something. it was right next to the throttle. Does anyone know what it is?
2002 ford ranger FX4
Off Road | 4.0l v6 | Flowmaster 40 S/I D/O | JBA Headers | Rebello Racing cams | port and polished heads | K&n Drop-in filter | TwinStick
| 31 Spline 4.10 Torsen rear diff | Alcoa rims | Sitting on 31's|