'Bearing' type noise after VE swap. Help!
Hello everyone. Ever since my VE swap into my '99 SE-L I get this higher pitch 'bearing-going-bad' or belt squeal type noise that starts at about 4k rpms. The noise continues all the way to redline. I thought at first it was the power steering/water pump belt, but I changed that out to no avail.
Here are some facts and things that can be ruled out:
-I changed the power steering belt.
-I changed the water pump.
-The noise is still present with the alt/ac belt removed; so the rules them out.
-The noise goes away with the pwr str/water pump belt removed.
-I don't think it's the power steering pump since it didn't do it before the swap.
But here's the kicker, the noise disappears when I move the air mix door position from cold to warm. In fact, if I move the air mix door just 2-3 notches to the right, from full cold, the noise goes away. I checked the FSM to see if there is some kind of water valve for the heater core that opens, but I don't see one. No other a/c or heater position functions or switches affect the noise.
So to me, the noise seems to be water flow or heater core related. I'm pretty sure that I have the heater core plumbed the right way. The bottom heater core connection goes straight to the outlet on the engine, and the top heater core connection goes to the connection under the throttle body.
This problem has me stumped and has kind of put a bummer on the whole swap. If anyone has any ideas please chime in!
Here are some facts and things that can be ruled out:
-I changed the power steering belt.
-I changed the water pump.
-The noise is still present with the alt/ac belt removed; so the rules them out.
-The noise goes away with the pwr str/water pump belt removed.
-I don't think it's the power steering pump since it didn't do it before the swap.
But here's the kicker, the noise disappears when I move the air mix door position from cold to warm. In fact, if I move the air mix door just 2-3 notches to the right, from full cold, the noise goes away. I checked the FSM to see if there is some kind of water valve for the heater core that opens, but I don't see one. No other a/c or heater position functions or switches affect the noise.
So to me, the noise seems to be water flow or heater core related. I'm pretty sure that I have the heater core plumbed the right way. The bottom heater core connection goes straight to the outlet on the engine, and the top heater core connection goes to the connection under the throttle body.
This problem has me stumped and has kind of put a bummer on the whole swap. If anyone has any ideas please chime in!
Last edited by turbojim
on 2013-05-30
at 02-19-55.