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motor is still performing fine ,v8 still has all the power and grunt just belt whinemotor is still performing fine ,v8 still has all the power and grunt just belt whine
thats terrific news for you as it is quite difficult to diagnose when not being able to actually here it!thats terrific news for you as it is quite difficult to diagnose when not being able to actually here it!
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the high pitch noise and lack of power indicates air escaping under a turbo hose or a crack in the intercooler
possibly also that the boost dump valve is not operating correctly
Check for broken breather hose from valve cover and follow it under the intake. You may also have a ruptured diaphragm crankcase ventilation valve (vac leak), bolted under intake manifold.
Rough idle / stall at idle Check for vacume leaks & split intake tube or loose clamps on intake. Noise put spot of grease on drive belts if noise goes you may need new belts or a tighten up.
Most likely it is the breather tube and/or the oil trap box (integrated into the oil filter housing). if the box is plugged or the diaphragm is torn the box will send oil to the top of the engine via the hose.
do you also have a high pitched whistling noise?
Volvo has extended the warranty for the oil trap box (filter housing) to 120k miles and/or 10 years.
This is usually caused by the crankcase vent valves leaking air. These valves are round and sit on top of the front of each valve cover at the front. The diaphragm leaks and causes a vacuum leak and the car runs rough.
i have a similar problem. a squeaking noise, sounds when i start the engine, and when i stop the engine. at times it comes when the engine is running and idle, and it lasts some time like a high pitched whistle. Ive had several mechanics look at it, and it seem to be one of the smaller pulleys that the belts run around. in the 2002 model (petrol) of the crv the belts are not the cam belts, becuase this model has a cam chain (much more robust!). so they all said its nothing to worry about. you can try having your pulley replaced.
On the 325 series I have worked on (your year, make, model), I have found that idling issues like you describe are the result of a defective oxygen sensor. Replace the oxygen sensor with a Bosch unit. That should take care of your issue.
motor is still performing fine ,v8 still has all the power and grunt just belt whine
It was a PCV valve! replaced it and shes back to normal !
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