Sounds like broken glass when accelerating?
#1
Sounds like broken glass when accelerating?
I'm hearing a sound like broken glass/beer bottles rattling together when I accelerate from a stop (like something's shifting from the trunk or towards the rear of the car). When the car was safetied the mechanic noted a rattle sound coming from the exhaust which I had not heard when I test drove it. Could it conceivably be something in the exhaust? Or any other thoughts?
#2
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It could be destroyed cat converter particles in the piping an mufflers. It happens. Also search for "marbles in a can" it is another common issue that may be what you are hearing.
#3
Thanks for the feedback.. it sounds more like something shifting than anything related to engine RPM etc. I'll see if I can hear it sliding the other way when stopping.. haven't heard it so far but I'll pay closer attention.
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Next noobish question: am I doing damage to my car by driving it if the cat is in fact damaged? It's performing beautifully.. except the coolant light comes on occasionally.
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You could hope for this (marbles ejected from the can)
Last edited by wannawankel; 04-18-2017 at 03:28 PM.
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Thanks, I had a compression test done less than two tanks of gas ago.. think I could have blown it that quickly? It shows no typical signs of low compression (i.e. no trouble with hot starts).
#18
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You gotta remember these cars are incredibly fickle. The slightest thing wrong such as a backed up cat or a clogged cat WILL flow backpressure into the engine and just make for lots and lots of suck. Whenever I have anything that sounds weird with my car that isn't a heat shield or anything like that when I investigate I ground the car and use my DD if it's in the summer. It's already a challenge to keep maintained, no reason for me to make it worse on myself to blow an engine.
#19
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Get a $10-20 CAN/ODB scanner on amazon and pull the codes. It could be something completely irrelevant. If your car throws codes half as often as mine does, you won't regret it.
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