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odd noise

ben.w.walker

By ben.w.walker,
in General Forums

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ben.w.walker NPORA Newbie

ben.w.walker

Posted
Posted

so my 94 has decided to develop an odd noise today while accelerating through the first 3 gears. don't notice it in 4th or 5th, maybe because of speed. can't be something on the tire because it only happens while pushing the accelerator. its sort of a whistle/whine noise, not too loud and she still seems to be driving fine. any suggestions would be of terrific help.

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nunya NPORA Old-Timer

nunya

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sound like it's in front of you? behind you? under you? trans area, motor area, dash area? got a video camera w/sound? sometimes 'noise' issues are hard to diagnose over the interwebs.

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Precise1 NPORA Old-Timer

Precise1

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How many miles on it? Has the gear oil been replaced regularly? The diff oil?? Like Nunya said, any idea of where it is coming from?? Try driving along side a wal or long building with the window down, the sound reflection can help a lot or have a passenger try to locate it while you focus on driving.

 

B

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Precise1 NPORA Old-Timer

Precise1

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Purely on a hunch I'm guessing intake hose is old, split, leaking?? Lower gears flex the motor mounts more, the engine moves more opening a small gap?? You can check this by spraying a flammable aerosol on the hose while moving it (after visual inspection of course). I prefer WD-40 for many reasons.

Just a guess, it's hard to tell from here... :shrug:

 

B

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sewebster NPORA Old-Timer

sewebster

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It gets sucked into the engine and burnt. So you know you found a leak when the engine revs up. I probably wouldn't use liquid wrench... it's kinda messy. You want something that makes more like a fine mist.

 

Can you use propane?

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vagabond NPORA Old-Timer

vagabond

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Berrymans B12 is one of the better chemicals for finding vacuum leaks, use one of the pressurized cans Also works great on cleaning the throats of throttle bodies.

I've even used it as a starting fluid :D

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