View Full Version : squealing sound

07-08-2003, 11:46 PM
HI ...i am experiencing

a very "chirping sound" when i'm driving... I have started ruling out different sounds... and even took "soapy water" and sprayed in searching for possible vac leaks, however the most distinctive
sound is right after the car is turned off

there is a chirping then a high pitch sound, and i hear it right by the front left tire

07-09-2003, 04:54 AM
A whistling sound heard in the engine bay immediately after shutdown is almost always a bad Idle Air Control (IAC) unit. This is sometimes associated with a rough idle.


07-09-2003, 11:51 AM
Make sure the big nut on the top of the supercharger is tight on the outlet pipe. It can vibrate loose and allow for a similar sound as well.

07-09-2003, 02:33 PM
I use RTV sealer on the connections of my intercooler tubes. A while back I started hearing a high pitched squeal that continued for a second or so after I shut off the engine. After searching, spraying propane on the connections, listening from different angles, etc. I just decided to tighten everything up. It turned out that the upper connection of the lower IC tube was loose. I tightened the two bolts at the retaining ring and it stopped. If the rubber (RTV) seal leaks, it squeals like crazy. I would check the IC connections.

07-10-2003, 08:04 PM
that squeeling sound is the pressure of the engine

turns out it is the crankcase building up pressure

quick question

what is the best way to relieve pressure from the engine

07-11-2003, 09:16 AM
How about the PCV valve? Might also be a good idea to replace the rubber grommet that it fits into as well. You may also want to check the elbow connector on the driver's side that connects to the intake tube (via a hard plastic line).
I've never heard of a PCV squealing, but hey, these Birds do some quirky things.........

07-12-2003, 12:07 AM
The Engine is under so much pressure that
when you unscrew the oil cap i heard the excess pressure
release and the squeeling noise actually stopped when turning off the car (this was before sealing the IC with RTV gasket)

there was so much excessive pressure in the engine

Took the car back to my mechanic...we checked out what i thought was the belts squeeling. he suggested me to check the tranny cuz all the components on the belts seemed intac...

we went to the guys who did my tranny... they tried to say it was the belts but to their suprise the squeeling sound was happening when it was up on the lift idling and also when they checking the gears.... when they dropped the tranny they felt they would change the torque converter because of possible lock up when might be the reason for my hesitation in vac and boost so they spent about 4 hours PRO BONO cuz these guys stand behind their work.

to compensate i re-routed the pcv valve system to plug into each other and where the air assembly unit elbow to the back hole near the egr transducer (the way it was orginally done when i rescued the SC from the previous owner

i still have the same hesitation but there is no pressure in the engine

i'm trying to reseal and tighten the IC tubes and hopefully
the pressure will cease

what do you think is contributing to the pressure build up

i really can use your expertise guys i need to stop the hesitation
and find out whatis the best way to redue the vaccum so this doesnt keep happening

it's a new engine i dont want to ruin it unless i'm going to DRAG RACE IT

07-12-2003, 08:50 PM
you can read part two