12-16-2007, 09:39 AM
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#1 |
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Registered User
Age: 49
Join Date: Apr 2005
Posts: 19
Location: User is: OffLine |
popcorn popping sound?
Search has been done. Our 99 Blazer just began making this noise. It sounds like it may be exhaust related from it's location but it's very irregular in timing, pitch and volume. It just started last night. I'm thinking maybe catalytic converter. Anyone heard of this before?
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12-16-2007, 05:13 PM
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#2 |
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The Dreamsicle
Age: 20
Join Date: Jul 2005
Posts: 16,051
Location: Rogers, MN User is: Online |
Re: popcorn popping sound?
is it a constant sound?
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12-16-2007, 05:39 PM
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#3 |
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Megabyte
 Age: 23
Join Date: Sep 2006
Posts: 7,652
Location: Vancouver, WA User is: OffLine |
Re: popcorn popping sound?
knock on your cat and listen to if it sounds like there are broken stuff inside. |
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12-17-2007, 07:21 AM
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#4 |
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Registered User
Age: 49
Join Date: Apr 2005
Posts: 19
Location: User is: OffLine |
Re: popcorn popping sound?
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12-17-2007, 11:49 PM
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#5 |
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Registered 12 year old
Age: 19
Join Date: Jan 2007
Posts: 804
Location: North East Jersey User is: OffLine |
Re: popcorn popping sound?
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01-04-2008, 12:36 AM
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#6 |
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curtks10
Age: 21
Join Date: Feb 2005
Posts: 64
Location: jackson MO User is: OffLine |
Re: popcorn popping sound?
ya,i might have the same noise..mine sounds like somthing got threw up and hits my jimmy tho...idk.like a body noise or joint popping.maybe?
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01-05-2008, 10:42 AM
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#7 |
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Registered User
Age: 49
Join Date: Apr 2005
Posts: 19
Location: User is: OffLine |
Re: popcorn popping sound?
Update. This stopped the next day. About one week later, I got a SES light. Something with the EVAP system. I checked the gas cap but no change. I still have the light but the Blazer runs great. NOW, I have a hot/cold issue with the heat. I'm gonna check all the usual culprits with that today and poke around the vacuum lines,too. Next up is inspection, so my mechanic WILL find the things I don't even think of with no effort. He always does.
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01-05-2008, 11:00 AM
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#8 |
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Has Training Wheels
Join Date: Jun 2007
Posts: 2,465
Location: Iowa User is: OffLine |
Re: popcorn popping sound?
is it coming from the exhaust tip?
if so, mines been doing the same for a few months, i took my cat off and had the muffler shop straightpipe it to a super turbo muffler, and after about a month it started making a popcorn popping noise from the exhaust, and it kept getting worse, right now at idle once it starts to warm up, it sounds like popcorn popping constantly, and im getting horible gas mileage, 14mpg city and 14.9 mpg highway, i have the 2.5l 1st gen 4cylinder and got 25-29mpg highway going 10mph faster than i do now  i was told, its more than likely the cat converter, since i dont have one, its not getting back pressure=pop pop pop sound, just like a glasspack does, except mines not a POP, more of a burst of air, like when you make a PUP noise with ur mouth |
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01-23-2008, 11:47 AM
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#9 |
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Mach-ZQ8
Age: 23
Join Date: Apr 2007
Posts: 11
Location: User is: OffLine |
Re: popcorn popping sound?
"ya,i might have the same noise..mine sounds like somthing got threw up and hits my jimmy tho...idk.like a body noise or joint popping.maybe?"
as for this on my old blazer i think i went through the same shit, it turned out to be the torrsion bar mounts, where they mount to your cross member |
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01-26-2008, 08:31 PM
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#10 |
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Registered User
Age: 49
Join Date: Apr 2005
Posts: 19
Location: User is: OffLine |
Re: popcorn popping sound?
I still haven't heard it again.
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01-27-2008, 11:38 PM
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#11 |
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Registered User
Age: 30
Join Date: Jan 2008
Posts: 8
Location: User is: OffLine |
Re: popcorn popping sound?
well next time reve the motor and see if it changes the sound that will let you know if its motor related or a bearing on your alternator etc
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