Help needed 2.5L stumbling and back fireing with surging, INTERMITTENT PROBLEM
OK I have a problem but I have no clue were to start, its one of those intermittent problem, sensor maybe?? Any way its a 2.5L 1995 190,00 miles, as IM driving it will start surging and then stumbling and backfiring over and over, I can throttle through it but as soon as I let off it starts again, and then after I stop and start going again, it may not do it, could it be the fuel filter, fuel pump, sensor, I just did a tune up a few months ago and I have only put a few thousand on it and yes I used quality parts, IM just not sure were to start or what it could be any ideas on were to start and what it could be would be greatly appreciated and again its a problem that comes and goes
Mine did that but only when raining ir water on the road. Ended up being the O2 sensor. My son's was doing it all the time after warmed up.... That was the fuel line, where it goes from steel to rubber. The rubber was rotten and soft. Hope this helps some.
I just replaced my fuel pump and fuel pressure reg as well, and I can't help but keep thinking that it feels differently for some reason. Felt like it had more power before the swap, well, before the death of the old pump anyway. I think its just me though, or that hole in the muffler that I found.