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I have a whistle noise coming from throttle body area - 1993 chev p32 chasis motorhome slight throttle

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  • Anonymous Mar 18, 2014

    give me a 99 chev.throttle body diagram

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It may be the fins inside the air cleaner box. Also check all your hoses and connections to make sure there tight.
Another possibility is a noisy pulley that needs oiled on the bearing only!

Posted on Jun 23, 2009

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Posted on Jan 02, 2017

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Sounds like air is shooting out when accelerating. Could this be an exhaust leak? Plugs, coils, hoses seem fine. Noise is coming from passenger side under engine sounds like.


yes could very well be an exhaust leak.but that should be kinda loud and annoying..also u could have a slight whistling sound coming from ur air intake hose coming from air cleaner box to ur intake or throttle body or ur air inlet goin to the motor. when the motor is accelerated it would produce a high pitch sound like a whistling .hope this can help

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Your whistling is quite possibly a vacuumn hose leak on the passenger's side, top of the engine. Look closely at the hose connections coming from the PCV. Small holes can develop in these vacuum line connections, and you will experience a rough idle, as well as the "whistling" noises.

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There's no way to adjust idle from set factory specs.sounds like you might have a vacuum leak or sensor concern. Is service engine light on? I would check the main vacuum connection at the rear of the motor on the drivers side near Lynn he firewall, all around the airbox and air tube going into throttle body. They're known for bad vacuum leaks at various places around there.you might be able to hear it if you have someone start and slightly hold throttle open and listen for a whistle or sucking noise. .

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What year , make , model an engine size ? Intake manifold gaskets

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Light bulb may not be completely seated in dash. The whisling noise could be any clamp on the intake tubing, a crack in the tubing, throttle body connections, cracked rubber holes such as PVC valve area. As long as the engine is not hot you could lightly spray some carb cleaner in suspected areas you can't actually see well and listen if the engine revs up in rpms all of a sudden. That will be the area to look for holes where it is sucking the carb cleaner fluid into the engine. Good luck.

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Hi, Sounds like you may have a vacume leak and soap will just be sucked in to the motor.I would check for loose bolts on throttle body or rubber seals that are loose.Check for cracked rubber hoses also or loose hoses. Throttle body may have a split gasket as well.You can use a stethoscope that can be bought at auto parts to pin point noise or soft piece of paper. Thank Y for choosing FixYa.

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It's either a loose belt or the pressure regulator inside the pump has failed. I wouldn't leave town until a new power steering pump is installed.

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My 93 chev 1500 pick up will surge at an idle.No warning lites come on.I changed the IAC,the spark plugs,and even the injector harnesses.I also checked and cleaned the ground wires on the thermostat...


Check all the plugs on the throttle body, clean the throttle body., Have you disconnected the map sensor to see if their is a diffrence? the next thing would be to check for correct voltage on said sensors and I almost forgot for correct fuel pressure.Reason being is it is also possible to have a weak but operating fuel pump and or fuel pressure regulator.

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hi try taking the air filter pipe off the throttle body see if the butterfly spindle has no play in the spindle or the retaining screws that hold it to the spindle have not come loose just put your finger on the butterfly while its idling see if the noise goes if not just pinch the vacuum hose on the vacuum box see if noise goes or changes pitch yates210456

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