Strange sound......... - Off-Road Forums & Discussion Groups
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post #1 of (permalink) Old 05-11-2003, 01:44 PM Thread Starter
 
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Strange sound.........

I swear.......I've never had this much trouble with a vehicle. I'm extremely frustrated and about ready to give this damn this away!

OK, when I hit a bump at the right angle, head down an incline that is a certain pitch and sometimes even turn just WRONG, I hear metal on metal! It's not the fan hitting the fan shroud, so at least the engine isn't flopping back and forth any more.

I have absolutely no idea what it could be, BUT, the problem can be caused consistently, so hopefully I'll be able to identify it soon. Problem is, I'm not much for the idea of hanging on underneath while the vehicle is moving.

It doesn't sound like the exhaust bouncing around, but I haven't completely ruled it out. It sounds kind of like a mud flap rubbing in the tread of a tire, but a tinny metalic sound.

[img]images/graemlins/AR15firing.gif[/img] [img]images/graemlins/cussing.gif[/img]
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post #2 of (permalink) Old 05-11-2003, 03:26 PM
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Re: Strange sound.........

Hey man, Im having the same problem, I get this hideous sound from the rear of my Bronc that sounds like metal on metal, I really can't frigure it out because it is only when I am backing up from a certain place, at a certain angle, and it is only when my foot is set on the brake pedal, not pressing but just setting on it, it is quite obscure. [img]images/graemlins/scs.gif[/img] [img]images/graemlins/RockOn.gif[/img]
post #3 of (permalink) Old 05-11-2003, 04:27 PM
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Re: Strange sound.........

</font><blockquote><font class="small">In reply to:</font><hr />
I'm extremely frustrated and about ready to give this damn this away!

[/ QUOTE ]
Sorry to hear that... will you ship or do I need to come pick it up? [img]images/graemlins/cool.gif[/img]
Do you have a tape recorder and some ductape? I want to know exactly what it sounds like, and I have an idea [img]images/graemlins/grin.gif[/img]

BigBlue, how new are your brake shoes in the rear? If your drums arent brand new and you put a new set of shoes in there, it takes awhile for them to contour to the drum's surface, and while they're doing that they will emit a high pitched metallic sound, especially when you're just barely on the brakes because they are free to vibrate. Various brands of shoes are worse about this than others, but I dont know them enough to recommend one.
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post #4 of (permalink) Old 05-11-2003, 06:19 PM Thread Starter
 
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Re: Strange sound.........

I actually may be the heat shield around the muffler rattling on the frame now and then. I have a chewed up, rusted out, half-ass exhaust on there right now.

I think that if it was something really bad that it would've already broken....I dunno.

I wiggled the exhaust around and it quit, for the most part. The sound doesn't really seem to be in pitch with engine speed or anything............but I'm not sure.

What was your idea?
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post #5 of (permalink) Old 05-11-2003, 11:49 PM
 
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Re: Strange sound.........

Sounds to me like it's time to get an exhaust. I actually have my heatsheild c-clamped around the empty cat housing. I drove me crazy for a week.JMO-Bob [img]images/graemlins/thud.gif[/img]
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post #6 of (permalink) Old 05-12-2003, 01:07 AM
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Re: Strange sound.........

oh, i just wanted you to ductape the recorder under your truck so we could hear what it sounds like [img]images/graemlins/smirk.gif[/img] my 2nd cat/heatshield rests on the tranny crossmember and makes a clanking sound... all that crap is getting redone this summer from the exhaust valves back [img]images/graemlins/40BEER.gif[/img]
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post #7 of (permalink) Old 05-12-2003, 08:03 AM
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Re: Strange sound.........

From the way you describe it, (tinny metalic sound) i would hafta agree with others here. The heat shield on my 86 cat had 4 cracks in it where the two brackets attach and from fluctuating temps down there, it would rattle, flexing back and forth on the brackets driving me nuts. [img]images/graemlins/crazy.gif[/img]

I took the thing off and brazed up the cracks plus spot welded the shield to the brackets, no more noise (4 years later).

Hey , its 20 years old, i have seen a lot of folks having more trouble than you with 3 year old vehicles.
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post #8 of (permalink) Old 05-12-2003, 09:11 AM
 
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Re: Strange sound.........

Sounds to me like tire-meets-fender on both those trucks.
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post #9 of (permalink) Old 05-12-2003, 09:45 AM Thread Starter
 
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Re: Strange sound.........

It sounds similar to that, but it is definitely NOT that on my Bronco. My tire does meet the fender upon occassion so it's not like it never happens, but that's just not what this is.

I really suspect the exhaust the more I hear it.

That's a good thing really, compared to the other possibilities.
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