99 GMC Safari v6 3.0 Automatic. Replaced engine recently with a reconditioned unit. Unknown mileage.
While at idle and especially when driving, there is a loud noise that seems to come from the left front, drivers side, under the hood. It is like a vacuum cleaner type sound.
I took it back to the shop that installed the engine and they said it may be alternator noise. The car seems to be running fine, but it sounds like a beast.
Any help trying to locate the noise would be appreciated. Could it be exhaust manifold crack. Would that effect performance. Could it be the alternator.
My original engine that had a main bearing failure at 160,000 never made this sound. It is annoying.
So, what can I do to find the source of the noise and if none can be found, is there a way to deaden or damper it. Thanks, I gave you a donation. Dan Cox
Monday, November 26th, 2007 AT 11:44 PM