whining noise coming from somewhere in the area near cylinder 4 runner of the intake manifold
04-17-2007, 07:53 AM
#1
AudiWorld Super User
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whining noise coming from somewhere in the area near cylinder 4 runner of the intake manifold
It's somewhat intermidtent, but there about 90% of the time. I can hear it at idle inside the car. It builds up as RPMs rise and builds down as RPMs drop. It almost sounds like a SC whine and how it would sound with RPMs. Its not super loud, so if I get on it, the exhaust is much louder than the whine. Even when not on it, after 4000 RPM the exhaust is louder.
I listened to it a little with the hood up, but I really can't pin point it other than being towards the firewall, but not coming from the engine directly. Any ideas what to look at or test?
I listened to it a little with the hood up, but I really can't pin point it other than being towards the firewall, but not coming from the engine directly. Any ideas what to look at or test?
04-17-2007, 08:37 AM
#4
Keeper of the Cash
Well, there is a jungle of vac lines in that area. My other guess is the brake booster valve
that has a crap ton of lines hooked up to it has a crack. Beyond that, brittle plastic might need a look at by you.
04-17-2007, 08:57 AM
#5
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You sure it's not from one of the pulleys driven by the acc belt?
Noise could be echo-ing off the firewall confusing things. If it's related to rpm, I would guess this is the issue.
04-17-2007, 09:45 AM
#6
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Re: whining noise coming from somewhere in the area near cylinder 4 runner of the intake manifold
hrrrrm, i also have a 'whinning' noise coming from what sounds like the passenger side rear of the engine..
sound continues briefly (5 seconds) when i shut the car off...
i KNOW i have an exhaust leak just above the flex joint, but i dont think that is the cause of the whinning sound...
any help would be appreciated
sound continues briefly (5 seconds) when i shut the car off...
i KNOW i have an exhaust leak just above the flex joint, but i dont think that is the cause of the whinning sound...
any help would be appreciated
04-17-2007, 10:48 AM
#7
AudiWorld Super User
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I'll have a closer listen tonight and try to get under the car to see what I can hear
problem is that the fac clultch is super loud right now and this might be easier to identify once I replace the fan clutch.
