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Could this be the BOV

 
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Old 12 Jan 2012, 11:47 pm
Young Cruiser
 
Join Date: Feb 2011
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Default Could this be the BOV

I posted about this awhile ago, but the problem still persists.
When I take my foot off the accelerator pedal, regardless of the speed I am going, I get a sound like a pigeon cooing. or a bird chirping. It is only for 2 or 3 seconds, but only when I decelerate. It doesn't happen if your stopped and rev the engine, but only under load when driving.
The one suggestion I got was to check the vacuum lines, and I did that, and made sure they were all tight. I was thinking that maybe the BOV diaphragm was shot, and causing a "flutter" when the vacuum was reduced on decelerating. I am stumped as to what it could be???
Today, the engine check light came on for the first time ever (36000 miles),
so I am going to do a engine code check tomorrow.
If there are any suggestions as to what it could be, I would appreciate it.
Thanks....
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Old 13 Jan 2012, 06:52 am
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Default Re: Could this be the BOV

Be sure and post back the code. Go from there.
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Old 13 Jan 2012, 03:48 pm
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Default Re: Could this be the BOV

I take it you have a turbo model. If so the bov will sound off when you let up on the gas. It should also go off when you rev the engine. If you are lightly revving the engine it doesn't go off. On another note, with the turbo, all vacuum lines should be zip tied and the intercooler hoses should have t-bolt clamps on. This will help to prevent boost leaks. Boost leaks will rob power.
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Old 13 Jan 2012, 04:01 pm
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Default Re: Could this be the BOV

Umm... we don't have blow off valves. At least not in the traditional sense of ones that vent to atmosphere. You really shouldn't be able to hear the stock dump operating.
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Old 13 Jan 2012, 04:44 pm
Obsessed Cruiser
 
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Location: Mooresville, NC
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Default Re: Could this be the BOV

Quote:
Originally Posted by RaineMan View Post
Umm... we don't have blow off valves. At least not in the traditional sense of ones that vent to atmosphere. You really shouldn't be able to hear the stock dump operating.
If he's not the original owner, then maybe the previous owner installed a BOV, like I did....
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Old 13 Jan 2012, 04:49 pm
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Default Re: Could this be the BOV

Quote:
Originally Posted by RaineMan View Post
Umm... we don't have blow off valves. At least not in the traditional sense of ones that vent to atmosphere. You really shouldn't be able to hear the stock dump operating.
Sorry, but that isn't the case. You are right in that it's not a real bov, but I can hear it operating on both my stock GT and my modified srt. It's harder to hear on the auto GT, but you hear it well on the srt. Still haven't heard it is even a turbo model.
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Old 13 Jan 2012, 07:09 pm
Young Cruiser
 
Join Date: Feb 2011
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Default Re: Could this be the BOV

It is a Turbo model with automatic tranny.
The BOV as I call it (it's 100% stock).
I tried to get the code this morning by following instructions on line, but nothing appeared in the odometer area. I got a lot of chirps after 2 tries, but n code.
Let me know if I am doing it right...Off to On 3 times in under 5 seconds?
Thanks
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