catalytic converter

Swbari00 · Post by **Swbari00** » Wed Nov 10, 2004 10:50 am

If my cat is messed up can it make a metalicy hollow sound? the sound is comming from underneath my passenger floor board?

a2b · Post by **a2b** » Wed Nov 10, 2004 12:53 pm

yes. if its rusted out

Swbari00 · Post by **Swbari00** » Wed Nov 10, 2004 1:36 pm

whats the chance of that being covered under waranty? i only have 22800 miles and i had the truck in for the noise a good while ago. They said it was raining and couldnt hear it....grr

barch97 · Post by **barch97** » Wed Nov 10, 2004 1:40 pm

does your truck smell bad? like sulfur, rotten eggs?

Swbari00 · Post by **Swbari00** » Wed Nov 10, 2004 1:44 pm

at times it does, when i back-up into the exhaust, but other than that i dont know. Dont ride with the windows down often either. The sound it makes isnt always there. Only when i try to speed up and not the whole time i am speeding up.

jeff024 · Post by **jeff024** » Wed Nov 10, 2004 2:55 pm

if u got the truck new and only 22800 on it everything is still covered

a2b · Post by **a2b** » Wed Nov 10, 2004 3:01 pm

Swbari00 wrote:whats the chance of that being covered under waranty? i only have 22800 miles and i had the truck in for the noise a good while ago. They said it was raining and couldnt hear it....grr

its covered till 80k miles no matter who owns the truck

barch97 · Post by **barch97** » Wed Nov 10, 2004 5:12 pm

sorry I don't know what that means but I've always heard that when your car stinks like that, it's likely a leak in you catalytic converter.

Ken · Post by **Ken** » Wed Nov 10, 2004 5:56 pm

a2b wrote:
Swbari00 wrote:whats the chance of that being covered under waranty? i only have 22800 miles and i had the truck in for the noise a good while ago. They said it was raining and couldnt hear it....grr
its covered till 80k miles no matter who owns the truck

The PCM is also an 8/80 item. (just for future reference)

Post by **HenryJ** » Wed Nov 10, 2004 6:52 pm

Swbari00 wrote:If my cat is messed up can it make a metalicy hollow sound? the sound is comming from underneath my passenger floor board?

I am going to say , no. But not that it is not possible, just that I doubt that you would say this is the only , or most noticeable symptom.

If your cat is "messed up" your first indication that things are going awry would be the gas mileage declining. Now, if you don't keep real close track, this may go unnoticed since we don't get great mileage to begin with.

Next will be the exhaust getting quieter. This too will go undetected since it happens so gradually , that it is not noticed.

Now for things that start being noticeable...spark knock starts to rear it's ugly head, but you just blame it on bad gas or the need for a tune-up.

Then the temperature seems to rise to operating temperature faster than it did before. You just pass that off to the gas , engine tune, or weather, but nothing to worry about, right?

If you are starting to suspect the cat, by now you have bounced a deadblow hammer off the cat, and listened for any sound of looseness inside. Didn't really hear anything , right?

OK, now you take that long trip pulling hills and really heat that sucker up. When you try to push it a little, the detonation becomes more noticeable, and the temp rises. Soon it becomes difficult not to have knocking and you find the only way to cool the engine is to decelerate. Gas mileage has really gone to heck! The temperature rises almost as fast as the fuel level decreases.
Hey, just noticed the intake sounds really loud! You push on the gas and it is really sluggish, and the intake really makes a "BWAAHH" sound.

You now have a problem with the cat ( see image ), and never heard a hollow metallic sound from under the passenger side floor board

Plugged Pre-cat thread

Maximous · Post by **Maximous** » Wed Nov 10, 2004 8:05 pm

Swbari00 · Post by **Swbari00** » Sat Nov 13, 2004 7:17 am

i was thinking maybe its hollow... so if its not the cat, what could that sound be, its loud and annoying

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