Whistle on acceleration '94
- Thread starter lagwagon
- Start date
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Are you running cogged drive belts or non-cogged OEM drive belts? How about the idler pulley? The whistling sound you are referring to was brought up before when talking about drive belts. The PO had put them on mine and it was whirring and whistling. Put OEM's on and 90% is gone. I believe the idler pulley is bad though cause I still have a little of that whine left - or is that just me when speaking of the wimpy sub I have in my center console? Loud music will cure lots of other noises. Upgrade your stereo.
I never noticed the whistle until just recently. I cut off the resonator and it started getting noticable, but only when I turned down the radio. i cut off the over axle pipe cause the rattle at stops was driving me nuts. Whistle got louder and the exhaust melted my locker harness. 
last week I cut off the muffler and the whistle stopped. At least I think it did as it got loud. Since then I put on a small round muffler I had laying around and no whistle, but it's still too loud. I need a center inlet round, quiet muffler about 6" shorter than the stocker so i can make the bend and exit in front of the rear tire.
I wonder if the whistle is the drain hole on the muffler?
On a side note, a straight 6 has a lousy exhaust tone. Too smooth. Sounds like a Honda with a fart can on it.
last week I cut off the muffler and the whistle stopped. At least I think it did as it got loud. Since then I put on a small round muffler I had laying around and no whistle, but it's still too loud. I need a center inlet round, quiet muffler about 6" shorter than the stocker so i can make the bend and exit in front of the rear tire.
I wonder if the whistle is the drain hole on the muffler?
On a side note, a straight 6 has a lousy exhaust tone. Too smooth. Sounds like a Honda with a fart can on it.
D
Docmallory
Guest
Where in the world is a drain hole? I looked for one yesterday and could not find one on my stock exhaust '97.
I did notice that the rear of the muffler was mushy - that is, if the muffler were a Coke can, it was mushy where your bottom lip would go, all the way around. If you pressed on it, you could feel it give and hear what sounds like insulation compressing (?). The rear end cap of the muffler and the outer case did not seem attached to one another at that end. The front end of the muffler seemed tight and did not compress.
While the outside just has surface rust, perhaps these mufflers are rusting from the inside out - causing the whistle?
Anyone else have a mushy muffler, or have an old stock muffler we could autopsy?
I did notice that the rear of the muffler was mushy - that is, if the muffler were a Coke can, it was mushy where your bottom lip would go, all the way around. If you pressed on it, you could feel it give and hear what sounds like insulation compressing (?). The rear end cap of the muffler and the outer case did not seem attached to one another at that end. The front end of the muffler seemed tight and did not compress.
While the outside just has surface rust, perhaps these mufflers are rusting from the inside out - causing the whistle?
Anyone else have a mushy muffler, or have an old stock muffler we could autopsy?
I looked at mine today also wile attempting to grease the driveling, got the frotn drive shaft but not the rear, could not find the muffler drain hole, maybe the later muffler does not have it? are the mufflers the same through out the years?
I was looking at the joint between the cats the flanges are a bit curved by the bolts but I started it up and it does not leak cold at idle, maybe when hot and under more pressure it opens up, I'll be replacing all the exhaust gaskets when I wrap the exhaust (soon) if that fixes/changes anything I'll let you know
I was looking at the joint between the cats the flanges are a bit curved by the bolts but I started it up and it does not leak cold at idle, maybe when hot and under more pressure it opens up, I'll be replacing all the exhaust gaskets when I wrap the exhaust (soon) if that fixes/changes anything I'll let you know