Whistle from exhaust?? (with videos)
10-17-2011, 11:18 PM
#21
TECH Senior Member
iTrader: (7)
Andrew and Sherman8r - that makes total sense. I thought it was exhaust, but it doesn't seem to come from either side, only the bottom rear center, like it is the rear main seal. I have a breather on the rear driver's side valve covers, and the passenger side is hooked to manifold vacuum. My throttle body didn't have the vacuum port, hence the breather. There is no valve in the system. I suppose this is causing problems? What did you guys do?
Andrew
10-18-2011, 03:58 AM
#22
I agree. I have an idler pulley bearing that is doing that exact same thing right now.
Pull the belt and run the engine for a short bit after it would normally do it, I bet the noise goes away. Crazy part is I bought a new tensioner from AZ and the pulley did the same thing after about four days but not as bad. Crappy cheap replacement parts.
If you remove the pulley the bearing will feel a little rough or catch when you spin it in your hand.
Pull the belt and run the engine for a short bit after it would normally do it, I bet the noise goes away. Crazy part is I bought a new tensioner from AZ and the pulley did the same thing after about four days but not as bad. Crappy cheap replacement parts.
If you remove the pulley the bearing will feel a little rough or catch when you spin it in your hand.
10-18-2011, 04:04 AM
#23
Andrew and Sherman8r - that makes total sense. I thought it was exhaust, but it doesn't seem to come from either side, only the bottom rear center, like it is the rear main seal. I have a breather on the rear driver's side valve covers, and the passenger side is hooked to manifold vacuum. My throttle body didn't have the vacuum port, hence the breather. There is no valve in the system. I suppose this is causing problems? What did you guys do?
10-18-2011, 06:47 AM
#24
It would appear I have it backwards.
10-18-2011, 08:43 AM
#27
Tony LOVE YOUR CAR BTW - do you have a part number for the valve that you used? There are two ports on my valve covers - one close to the firewall on the driver's side, the other is a small tube coming out of the passenger side near the front of the valve cover. So you are saying that the small passenger tube needs fresh air, and the rear driver's inlet needs vacuum?
It would appear I have it backwards.
It would appear I have it backwards.
Your drivers side rear should have a PCV in the rubber grommet unless you have the newer valve covers. The newer covers just have a tube coming out of the drivers rear (no good unless you are running the valley cover with the internal baffling). If you have a place to install the PCV in the drivers rear you should be able to get a PCV from a 2003 Chevy 2500 Silverado and go from there with some 3/8" hose around the intake to just before the throttle body. You are correct on the passenger side. you will route it to somewhere in front of the throttle body if your throttle body doesnt have the port already built in.
10-18-2011, 09:43 AM
#28
My ride needs a little body work. 
But thanks.
I have the covers that look like this:
The cover on the right is hooked to the passenger side. Is that tube on the back incorrect? If so, where can I get one with a grommet?
Also, can I temporarily leave the "fresh air" inlet unplugged?
But thanks.I have the covers that look like this:
The cover on the right is hooked to the passenger side. Is that tube on the back incorrect? If so, where can I get one with a grommet?
Also, can I temporarily leave the "fresh air" inlet unplugged?
10-18-2011, 12:00 PM
#29
My ride needs a little body work. But thanks.
I have the covers that look like this:
The cover on the right is hooked to the passenger side. Is that tube on the back incorrect? If so, where can I get one with a grommet?
Also, can I temporarily leave the "fresh air" inlet unplugged?
But thanks.I have the covers that look like this:
The cover on the right is hooked to the passenger side. Is that tube on the back incorrect? If so, where can I get one with a grommet?
Also, can I temporarily leave the "fresh air" inlet unplugged?
