Popping noise out of exhaust
03-31-2012 | 08:28 PM
#11
Senior Member
Joined: 02-19-2010
Posts: 1,529
From: Buffalo ny
YES! Exactly what mine does. I myself try to recreate the sound but no luck, only does it when it feels like it. Kinda glad someone else knew exactly what I was talking about.
And yes Badassbowtie, I'm a proud Miami Dolphins fan... though it has been an awful time to be one. I'm assuming you're a Bills fan? Rather see them win the AFC East then the Jets or the Patriots.
And yes Badassbowtie, I'm a proud Miami Dolphins fan... though it has been an awful time to be one. I'm assuming you're a Bills fan? Rather see them win the AFC East then the Jets or the Patriots.
04-02-2012 | 09:46 AM
#12
Senior Member
Joined: 11-05-2010
Posts: 1,492
From: Detroit, Michigan USA
Hi guys
Recently ive been hearing this sort of pop noise coming from the exhaust. I have a 5 speed SS. Never heard the noise when I had my cobalt tcss.
Anyway, it happens when I'm going into second gear mostly. It just kinds makes this pop. It doesn't happen all the time but a little more frequently and I'm getting worried.
Anyone else have a similar issue?
Recently ive been hearing this sort of pop noise coming from the exhaust. I have a 5 speed SS. Never heard the noise when I had my cobalt tcss.
Anyway, it happens when I'm going into second gear mostly. It just kinds makes this pop. It doesn't happen all the time but a little more frequently and I'm getting worried.
Anyone else have a similar issue?
Let me know if you would like assistance making an appointment.
Michelle, Chevrolet Customer Service
04-02-2012 | 12:30 PM
#13
Senior Member
Joined: 11-05-2010
Posts: 1,492
From: Detroit, Michigan USA
I've got a 5 speed. Does the "pop" also.
EX. In 1st gear,take off. When I let off the gas and depress clutch for the 2nd gear shift,that is when it "pops".
Strange that it doesn't do it all the time. I'd say about half the time. I've tried to recreate the issue(speed,rpm) Can't find the exact scenario to make it do it every time.
Oh well. I just think it is normal based on the design of the stock SS exhaust set up.
EX. In 1st gear,take off. When I let off the gas and depress clutch for the 2nd gear shift,that is when it "pops".
Strange that it doesn't do it all the time. I'd say about half the time. I've tried to recreate the issue(speed,rpm) Can't find the exact scenario to make it do it every time.
Oh well. I just think it is normal based on the design of the stock SS exhaust set up.
Michelle, Chevrolet Customer Service
04-02-2012 | 03:01 PM
#15
Platinum Member
Joined: 12-06-2009
Posts: 11,431
From: Alabama
I would say yes. It's just not overly loud. Thus the description of it being a "pop". I still think it is just a result of the SS's exhaust design.
04-02-2012 | 03:19 PM
#16
Senior Member
Joined: 10-19-2011
Posts: 1,553
From: N.Y.
Just a guess here but.if its popping through the exhaust I would guess either exhaust valve is open for whatever. Reason or maybe running rich and igniting excess gas in exhaust.
I am guessing a good tech.Cam diagnose this with a scanner.
I am guessing a good tech.Cam diagnose this with a scanner.
04-02-2012 | 03:58 PM
#17
Senior Member
Joined: 07-05-2008
Posts: 5,464
From: Akron Ohio
I had this noise under letting off the boost.It was right before I has the Map blow out of the replacment intake tube. It made the car run rich with a bad reading and under letting off the boost it would pop and flame out the trail pipe.
I think the rich mixture was just getting out of the pipe and it when it hit the air it would pop and flame. I never had a code till the weld on the tube holding the map in broke. It was an early made pipe that was installled after the IC was damaged.
I think the rich mixture was just getting out of the pipe and it when it hit the air it would pop and flame. I never had a code till the weld on the tube holding the map in broke. It was an early made pipe that was installled after the IC was damaged.
04-02-2012 | 07:09 PM
#18
Platinum Member
Joined: 12-06-2009
Posts: 11,431
From: Alabama
FWIW. Mine has done this since new. 2 years. No codes. Runs fine. Before and after the GMTU. Personnally, I don't feel there is anything wrong. I just think it is a result of the SS exhaust design and the 5 speed combination.
It apparently runs a little rich at the 1-2 shift point and that seems to contribute to the "pop" or backfire. Granted, this is just my opinion,based only on observing my own car.
Also, I don't run the rpms up in first gear. I usually shift early,about the 12-15 mph range. This may lead to my car having any overrich fuel condition at the 1-2 shift.
Once again. Just my opinion.
It apparently runs a little rich at the 1-2 shift point and that seems to contribute to the "pop" or backfire. Granted, this is just my opinion,based only on observing my own car.
Also, I don't run the rpms up in first gear. I usually shift early,about the 12-15 mph range. This may lead to my car having any overrich fuel condition at the 1-2 shift.
Once again. Just my opinion.
04-04-2012 | 08:37 AM
#19
Senior Member
Joined: 11-05-2010
Posts: 1,492
From: Detroit, Michigan USA
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