I swapped in another motor using a hydro b16 transmission. I start the car and hear a high pitch whistle coming from the tranny at all times! It hurts my ears when I stick it next to the starter. I did not replace my throw out bearing (stupid me) but when I step down on the clutch that noise does NOT go away. I want to know if its the throw out bearing or not before I go and take off my transmission and replace it. Any suggestions?

Also my idle has been going up and down. I adjusted my tps already and checked for any vacuum leaks from the intake manifold. Non whatsoever.

 

Could also be the main shaft itself. The next time you have the tranny out, see if there's a lot of play on the main shaft. Otherwise, it's the clutch release bearing.

 

so you would say its my transmission eh? therefore I gotta take it off no matter what then I can see what the problem is.. this sucks

 

need more suggestions

 

The release bearing only turns when you begin to depress the clutch pedal and the release bearing contacts the fingers on the pressure plate.

What it all means:
-If the noise is there when the clutch pedal is up (clutch engaged) the release bearing isn't turning.
-The noise is still there even when the clutch pedal is depressed, interesting because at this point nothing inside the transmission is turning. This should eliminate any internal transmission bearings.

What does this leave us with?
-The pilot bearing, the only problem with this is that once the clutch is fully engaged the transmission input shaft and flywheel should be turning at the same speed (meaning the pilot bearing shouldn't be turning.

Check your free play, I suspect the release bearing is bad and turning all the time due to there not being enough free play.

Edit, when I initially read the OPs OP I figured this was the same old question I see every week, this one is a little different, the noise is there all the time.

 

yes I will definitely check the free play as soon as I take off the transmission. Thanks for the advice. Ill get back to yah maybe later on tonight!