Whining noise from engine compartment

Try taking the belt off and starting the engine. If it is something in the accesory system, the whine will go away without the belt. If it is still there you know it is something in the engine. If it does go away you can then spin and feel the bearings in the tensioner and idler puleys to find the source of your noise.

Whining could be the water pump. That would cause over heating and to much pressure which blew out an old radiator. An over heated engine will not have power. But it also could be the engine is worn out and has no compression in the cylinders. Do a compression test first, before throwing money at it.

How do you know the pump is defective, what is the code?

were is fuel fillter located

I recently purchased a 2004 Ascender with the 4.2l in-line six cylinder motor, and under the 60 day warranty, the fan clutch and water pump had to be replaced. The mechanic told me that the fan clutch wears out causing an out-of-balance condition which puts extra strain on the water pump, which was leaking. Another issue may be that the timing chain needs to be looked at, because the tension wheel/gear for the chain wears out, making the timing chain sloppy. Then the chain flops around inside the housing, making a similar noise to the one you describe. Have your mechanic/technician check it out.

Have you had the tranny flushed and new fluid and filter installed. This could be the problem.

Sometimes when your altenator bearings are going bad they will make a whining noise, could also be power steering pump, try to see if you can isolate the noise to one or the other, is it louder on one side of the engine or the other side. That would help to narrow it down.

Could be several things. WHICH ENGINE?.. 4 cylinder (has three belts, power steering/water pump, alternator & A/C compressor, one tensioner pully A/C compressor), The V6 2.7 (has only one belt, 1 Idler pully and 1 tensioner pully), the V6 3.5 has two belts - A/C/alternator, and power steering - there are two tensioner pullys). Noises can be caused by the belt(s) themselves, pullys, bearings, pully bearings, water pump shaft bearings (or belts/pullys rubbing up against something). Let's not forget that there is also belt(s) behind the Timing Belt cover as well as pullys and bearings associated with the timing system. You could start by removing one accy drive belt at a time (alternator, water pump, compressor, power steering, etc) to see whether or not the noise goes away in each case. If after each case, you discover the noise is still there, it's probably behind the timing belt cover (idler/tensioner pully, water pump shaft bearing, crankshaft bearing, etc.). Good Luck

2005 impala trans hits hard after a while or driving faster speeds i turn off the engine for a few minutes restart engine and he changes fine

hi more than likley to be the alternator remove your fan belt start engine see if noise disapears yates210456