crx_bob

Hi everyone, I am getting the timing belt, head gasket and all other belts done but I have noticed a whistle / squeal sound at low revs (cant hear it at high revs) and when I switch the motor off I can hear it lower in pitch as it winds down and stops.
Can anyone suggest what it is and if there is something else I should get done at the same time to fix this?
Thanks

rpared01

do u have the stock intake with no filter ? that might be it

crx_bob

Stock intake system with K&N flat element type filter, sound is new and filter is about a month old so discounted it, thinking dry shaft in the alternator might be a posiability, has anyone come across that before that you know of?

WebWorks

It's probably just your filter thats sucking in air. That's how mine is with stock intake arm and k&n cone filter.

96civicjdmsir2

do you have the 92-95 jdm b16a?....cuz if you do i got it in my car too...but i've been tryin' to figure out where that noise came from....every tu=ime i turn my car off...i hear this whistlin sound goin lower and lower( thats if i have nothing turn on and i can hear it). thats majority of the tyme wen i turn the car off......(still dont noe wat it is?)

ARMED

might be the belt....let it run..put some water or something on the belts, see if it goes away...


it could be your belt tensioner too...that round thing...that makes your belt tighter...

spray some oil or something in there..see if it goes away...

crx_bob

Yeah that is the motor I have mine is second gen though, I have someone working on it now to find the noise and fix it, will let you know if he finds out the cause.

bsixteen

its just the intake/motor going through the last few revolutions when you turn the car off

crx_bob

I dont think so, been playing and found that at idle the sound is there and can be herd up to 1800 rpm then just stops, drop below 1800 and it kicks in again, only when warm, thinking input shaft in fan?

bsixteen

i could hear the intake suck in air in park when i revved my motor on my auto/EX. it does go away at higher rpms or you just can't hear it. either way its not hurting your car