Have a 95 explorer with 105k on it. Just changed plugs to splitfires, new wires, K&N breather, drilled the holes in the box, among lots of other things.
The power is up now (feels like about another ten horses with the AC on), but there are a few weird things going on, maybe someone can help me with.
When I am mildly accelerating, in park with the gas slightly pressed, or going a constant speed anywhere between 25-45 or so, the engine seems to do this surging thing. If I am in park and I push the gas down a littl bit, the engine will go to RPM and then waver, almost like a metronome. it will surge for a second, then come back down for a second and then surge again. The timing of the surges are very regular, right about one second. Does anyone have any ideas? I haven't put it on a code reader yet.
Also, I think the alternator or the water pump is making a whining noise, it's very unharmonic and seems loudest when I first start up. Ideas?
Now for my contribution:
There was an EXTREMELY annoying pinging noise coming from the engine, I tried everything, resetting the computer, torquing the manifold bolts, regular gas. I was at my wit's end until I saw a post about the cat shield coming loose. So I looked up in there and viola! Not the cat shield, but the heat shield that wraps the manifold pipes from the manifolds to right before the cat had broken their (cheap, crappy) welds and were dinging around, making a racket.. A couple of stainless steel hose clamps (one 3" and one 4" should do it) solved that problem. Make sure to cut off any of the extra strip when you've cranked em down, or you'll be right back where you started with the noise.
The funny (well maybe not funny) thing is that those loose shields sounded EXACTLY like a bad lifter.
Any input on my problems would be GREATLY appreciated!
Thanks
Scott Brawner
The power is up now (feels like about another ten horses with the AC on), but there are a few weird things going on, maybe someone can help me with.
When I am mildly accelerating, in park with the gas slightly pressed, or going a constant speed anywhere between 25-45 or so, the engine seems to do this surging thing. If I am in park and I push the gas down a littl bit, the engine will go to RPM and then waver, almost like a metronome. it will surge for a second, then come back down for a second and then surge again. The timing of the surges are very regular, right about one second. Does anyone have any ideas? I haven't put it on a code reader yet.
Also, I think the alternator or the water pump is making a whining noise, it's very unharmonic and seems loudest when I first start up. Ideas?
Now for my contribution:
There was an EXTREMELY annoying pinging noise coming from the engine, I tried everything, resetting the computer, torquing the manifold bolts, regular gas. I was at my wit's end until I saw a post about the cat shield coming loose. So I looked up in there and viola! Not the cat shield, but the heat shield that wraps the manifold pipes from the manifolds to right before the cat had broken their (cheap, crappy) welds and were dinging around, making a racket.. A couple of stainless steel hose clamps (one 3" and one 4" should do it) solved that problem. Make sure to cut off any of the extra strip when you've cranked em down, or you'll be right back where you started with the noise.
The funny (well maybe not funny) thing is that those loose shields sounded EXACTLY like a bad lifter.
Any input on my problems would be GREATLY appreciated!
Thanks
Scott Brawner
