So i have this rattling sound that i get once the truck is warm and i give it gas....say if i am on the highway going 60 and i have this rattling sound as soon as i remove my foot from the gas it goes away. Could this be a Catylic converter going bad? I am also have some loping while idling at a stop. Could a cat give you those type of symptoms?
Rattling sound that's driving me nuts
- Thread starter BigSur
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Is it rattling like maybe the the exhaust is loose or maybe the heat shield over the cat.
vavle rattle? where is the rattle coming from?
The harmonics of the engine are different when accelerating than decelerating. If your rig is stock it may have one of the heat shields cracked or broke around the exhaust manifold.
- Thread starter
- #6
I know its not my valves...it did a valve job about 8 months ago and that's more of a ticking. this sound is coming from underneath me or in front of me. I know about the heat shield issue around the cat but didn't think about the one around my manifold.
jason
jason
Smog Pump?
The rattle pretty bad just before the vanes break and they seize up.
yes
Heat riser on the exhaust manifold maybe? It would also explain your poor mileage.
Well crap, I thought you had a 60. I just re-read the first post. You are going 60 and not driving a 60.
Maybe the dual exhaust is cracked?
Notice any vibrations along with the rattling noise?
Maybe. When it gets to operating tempurature the metal may expand just enough to open a crack or something.
Dual exhaust can be tight under a 62, make sure that one of the 02's is not rubbing/hitting on the floorboard
I was thinking of the stock dual down tubes.
OH ok. Well the asshat that did my exhaust forgot ONE MAJOR thing when he did mine. He did not put lockwasher on the flanges and when it heated up the dam thing started rattling(not leaking yet) but rattling. Drove me nuts.
