Question about 2004 Lexus RX 330
Smell of electrical burning
Posted by Anonymous on
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Posted on Jan 02, 2017
A burning rubber smell under the hood might be just that - consider having your accessory drive belt inspected, as it is possible that a bearing in one of the accessories (alternator, power steering pump, air conditioning compressor, etc.) or in the tensioner mechanism might be failing. This sort of fault will often cause that particular accessory bearing to spin less freely than the others, and as a result the belt continues to pass over the associated pulley at the same speed as the engine. Essentially, the result is similar to a car spinning its tires on dry pavement - and a similar 'burning rubber' odor is the friction and heat of the rubberized belt.
If the odor is more like burning oil than burning rubber, the rear valve cover gasket is situated in a place that results in dripping oil, even small and unnoticable amounts, onto the exhaust manifold that is directly underneath the valve cover.
These two items might be places to start your inquiry. Best of luck to you!
Posted on Apr 27, 2009
is Thar a gas can in the trunk . or emichon pump hose liking fumes around engine look on ground for wet spot or look around the fuel filter
Posted on Jan 26, 2010
possibly your O rings which isolates fuel injectors from engine block are getting old and letting gasoline go out. it is very dangerous since it can cause fire. do not drive.
another cause is broken loose or cracked fuel lines. this is equally dangerous since it is under hood close to hot exhaust manifold.
if smell is from exhaust manifold, which means not the smeel of gasoline but exhaust fumes, this can be caused by broken exhaust manifold or a crack on it or problematic exhaust manifold gasket.
Posted on Nov 18, 2011
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