sounds, oh weird sounds...

Swbari00 · Post by **Swbari00** » Wed Mar 28, 2007 3:07 pm

Funny sound from under the pasenger side near the firewall. I would swear up and down it sounds like a heat sheild or something that is loose. But for the life of me I can find a loose one. The sound only happens when the truck is accelerating or if I am going up a hill or something that requires me to give it some more gas to maintain speed. Any ideas?

BADs Crew · Post by **BADs Crew** » Wed Mar 28, 2007 3:16 pm

Check the hood hinge mounting point. I think I remember someone else having this problem.

Swbari00 · Post by **Swbari00** » Wed Mar 28, 2007 3:22 pm

well it is deffinantly underneath, could that still be the hood?

Snoman002 · Post by **Snoman002** » Wed Mar 28, 2007 3:46 pm

Sounds like it could be a knock issue. Maybe run some high grade gas in it to see if it helps.

Jim · Post by **Jim** » Wed Mar 28, 2007 4:01 pm

Balance Shaft Noise
http://www.s-10crewcab.com/og1/modinfo/ ... eshaft.htm

BADs Crew · Post by **BADs Crew** » Wed Mar 28, 2007 4:09 pm

Swbari00 wrote:well it is deffinantly underneath, could that still be the hood?

I read of one S-10er who looked for weeks for a rattle only to find out it was the passenger side seat belt buckle taping against the center post. I'm just giving you some ideas. I am assuming you got under the truck and tapped on the cat with a rubber mallet to see if it was the heat shield.

WVHogRider · Post by **WVHogRider** » Wed Mar 28, 2007 4:14 pm

BADs Crew wrote:
Swbari00 wrote:well it is deffinantly underneath, could that still be the hood?
I read of one S-10er who looked for weeks for a rattle only to find out it was the passenger side seat belt buckle taping against the center post. I'm just giving you some ideas. I am assuming you got under the truck and tapped on the cat with a rubber mallet to see if it was the heat shield.

I had a rattle noise that sounded like it was near the front passenger side suspension, and it turned out to be the hitch draw bar resonating through the frame.

Post by **HenryJ** » Wed Mar 28, 2007 4:15 pm

Swbari00 wrote:Funny sound from under the pasenger side ... The sound only happens when the truck is accelerating or if I am going up a hill or something that requires me to give it some more gas to maintain speed. Any ideas?

Hit the pre-cat with a rubber mallet. Listen for the sound of parts rolling around inside.

That is my guess. Bad pre-cat and soon to be bad cat.

Swbari00 · Post by **Swbari00** » Wed Mar 28, 2007 4:25 pm

Its a very, hollow sounds, like one metal pipe in another one (like where an exhaust pipe connects to a muffler) are rattling against one another at times. I will try the rubber mallet trick. Next question...what is this "pre-cat" thing? Is there 2 cats on the truck?

Post by **HenryJ** » Wed Mar 28, 2007 4:38 pm

Sure sounds like a bad cat- Plugged Precat

Swbari00 · Post by **Swbari00** » Wed Mar 28, 2007 4:50 pm

if that is the case, is it covered at 67k miles? and would a flowmaster muffle void a possible warranty?

Post by **HenryJ** » Wed Mar 28, 2007 5:06 pm

The cat should be covered, but I don't know about the Pre-cat. Seems like it should, but I have never heard that specifically. It is a part of the emissions system. It may function just fine without it though. It is there to warm quickly , since it is small. Sorry I don't have a better answer.

It would probably be worth having a muffler shop check it. If it is indeed bad, then approach your dealer about a warranty replacement.

Swbari00 · Post by **Swbari00** » Wed Mar 28, 2007 5:09 pm

hey i appreciate an honest incomplete answer over a lie

Ill have a shop check it out first, thanks!

Post by **HenryJ** » Wed Mar 28, 2007 5:24 pm

Oh, I don't think the free flowing muffler would cause you any difficulties. That is downstream and should not contribute to any problems.

Don't let them blame that. The precats are known to fail. I know of four that went bad prematurely. Mine may have had too many "tried and failed" modifications run through it. Too rich is not a good thing. Plugs, bad coil, Vararam, etc. I think they may have taken their toll.

S-10CREWCAB.NET

sounds, oh weird sounds...

sounds, oh weird sounds...

Re: sounds, oh weird sounds...