Question about Cars & Trucks
I cannot seem to open to outer casing and need to look at the motor as there is a smell of burning and high pitched whistling sound
Nilfisk --- very difficult its easier to contact the agent and just get a replacement ,sounds like the aluminium rotor vanes have broke up and if this is the case then a replacement motor is easier ,i have taken these motors apart and they are a nightmare in the end it was either a replacement motor for a terrific cost or another car vacumn cleaner ,the later was the cheaper option
Posted on Nov 06, 2014
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Posted on Jan 02, 2017
First you need to isolate the noise. You don't mention the mileage on the car. Do you have the supercharged engine? If you do, remove the belt for the super and make sure that is not the problem. If you still hear the noise approximately below or from the super area, it is most likely the belt tensioner pulley.
In my car there was a large washer over the pulley (original equipment), as the pulley wobbled on the bad bearings, it would cause a sound like a bad alternator or gear whine getting exponentially worse the faster the engine reved. Now that the part is replaced, you can barely hear the engine idle and is significantly quieter at high RPM.
My car - 2004 Pontiac Grand Prix GTP with 66,000miles.
Posted on Dec 30, 2008
I have the same problem like yours but what i did is to replace the alternator and now its so quite no more high pitched sound. You may used belt stress fluid but its only last for few seconds then sound comes again. I replaced it with refurbish part alternator.My sienna 2005.
Posted on Feb 04, 2009
There may be a small hole or cut in a vacum line or possibly just loose. Also make sure the air filter box and the big hose to it are secure and clamps etc are tight. Pulleys and belts can make a high pitch sound also.
Posted on Mar 22, 2009
you may have a tensioner or idler pulley starting to go bad. They make a high pitched whistle when the bearings are on thier way.
Simply have someone slowly bring it up to 2000 rpm and listen with the end of a wooden broom handle touching the center bolt on each. Be careful not to get caught.
If you're not used to this you may be able to hear it whithout use of the "hearing aid"
Your drive belt may simply need dressing. You can buy this at almost any auto parts store for about 4 bucks. (dont use anthing else as you will cause the belt to stretch creating more issues)
Posted on Jan 01, 2010
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