high pitch engine sound under accelaration
#1
high pitch engine sound under accelaration
When I first start the car and press on the gas I hear a kind of loud high pitch sound which is definetly coming from the front of the engine. It started after the shop fixed my front manifold. I have a 90 max vg engine. Help with possible explanations and solutions
#2
the sound is while driving not in park while idiling. After I drive the car for 10 min or so the sound almost goes away except that I always hear the sound ( 10 min of driving or an hour driving)while I am in the speed range of 37 to 46 mph. strange
#4
Originally posted by maximav6power
the sound is while driving not in park while idiling. After I drive the car for 10 min or so the sound almost goes away except that I always hear the sound ( 10 min of driving or an hour driving)while I am in the speed range of 37 to 46 mph. strange
the sound is while driving not in park while idiling. After I drive the car for 10 min or so the sound almost goes away except that I always hear the sound ( 10 min of driving or an hour driving)while I am in the speed range of 37 to 46 mph. strange
#8
Originally posted by RosenKen
Are all your exhaust manifold studs there? You might have some broken ones. Start the car when it's cold and listen for a putt-putt noise.
Are all your exhaust manifold studs there? You might have some broken ones. Start the car when it's cold and listen for a putt-putt noise.
#9
Can't give u a definite answer for what this is but try using a funnel or something (as a stethoscope: big part to ear) to pinpoint exactly where the noise is coming from and maybe I can help u a bit more after that.
#14
I think it might be the belt. To fix my front manifold, the mechanic had to take out the ac compressor, thus moving the belt out the way. Do you think that he over tightened something. Tell me what I should look for to adjust. Any help/ideas would be great
#15
Originally posted by maximav6power
I think it might be the belt. To fix my front manifold, the mechanic had to take out the ac compressor, thus moving the belt out the way. Do you think that he over tightened something. Tell me what I should look for to adjust. Any help/ideas would be great
I think it might be the belt. To fix my front manifold, the mechanic had to take out the ac compressor, thus moving the belt out the way. Do you think that he over tightened something. Tell me what I should look for to adjust. Any help/ideas would be great
#16
What exactly did they do to the manifold? I know I have broken studs, and I have the same sound since a couple weeks ago. I think they probably either broke studs going in with the new manifold or broke studs while repairing old, etc.
Pete
Pete
#17
I heard the same cricket high pitch sound that would go away at certain speeds. The sounds you described is what I have right now. I just had the timing belt changed a few months ago but not the tensioner. I never thought about that because the sound occured only after I had my front manifold gasket, bolts, and manifold replaced. There is no exhaust leak and that sound is not an exhaust sound. Is it hard to get to the tensioner to replace or must it be brought to a garage.
thanks for you help you just probably saved me an engine rebuild as well. This org is the best
thanks for you help you just probably saved me an engine rebuild as well. This org is the best
#18
People people people, stop worrying about your tensioners and go out to your car tomorrow morning when the engine is cold. Pop your hood and reach down and feel around your front and rear exhaust manifolds. Be careful though, don't get cut on the heat shielding. The front's easy to get to, the rear is easiest to get from the passenger side (on a VE anyway). Find all SIX studs/nuts holding the manifold on. You can see them on the front, so you'll know what you're looking for. If you only find five (and search hard!), then you probably have an exhaust leak. Once one corner stud breaks, after a few months the gasket will burn away enough to create a small hole. The whistling will occur under engine acceleration or deceleration. Doesn't have to be hard acceleration, any will do. If it sounds like a bird chirping but it goes away under constant power, it's an exhaust leak. You'd have a broken manifold stud. VERY VERY common in both VG and VE engines. Your only bet is to get the broken stud drilled out and tapped. Have fun with that!
GO OUT AND LOOK! Online diagnostics are terribly inaccurate at times.
GO OUT AND LOOK! Online diagnostics are terribly inaccurate at times.
#19
Re: high pitch engine sound under accelaration
Originally posted by maximav6power
When I first start the car and press on the gas I hear a kind of loud high pitch sound which is definetly coming from the front of the engine. It started after the shop fixed my front manifold. I have a 90 max vg engine. Help with possible explanations and solutions
When I first start the car and press on the gas I hear a kind of loud high pitch sound which is definetly coming from the front of the engine. It started after the shop fixed my front manifold. I have a 90 max vg engine. Help with possible explanations and solutions
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6th Generation Maxima (2004-2008)
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09-02-2015 09:53 PM