High Pitch Screaming sound? Help!!!
 

I was wondering if anyone can help me out to figure out what this high pitch sound coming from the engine? I have it posted:

http://www.youtube.com/watch?v=OrpRmsZupXI

The sound started to happen after a timing belt replacement. I went back to the shop and the mechanic said it is my cam lobes/shaft possibly rubbing. He also noticed my oil pan was bent right near the oil pick area which could of created the oil circulation to not reach the head and caused friction on the lobes. He went in and sanded the area called a "jouls" or "douls"" or whatever it's called! . Took the car home for like 3 days of driving and the sound came back. Could it be the timing belt / tensioner or the pulleys. According to the mechaninc all the pullys are fine like AC/Alt/PS Pump. Now the mechanic said for me to install a oil pressure gauge and also wanted to determine if my oil pump is the culprit. Anyways any help would be greeatly appreciated!!

btw it's no the wheel bearing because it makes the squeaching/whining/super charger sound when you also rev the engine on neutral. It is also constant at 3 to 4k rpm..

mike


Modified by saberwing at 4:00 PM 10/15/2008

Re: High Pitch Screaming sound? Help!!! (saberwing)
 

That doesn't sound good at all... Just out of curiosity, why was the belt replaced, did it snap?

Re: High Pitch Screaming sound? Help!!! (BoSox46GSr)
 

hi BoSox46GSr

apparently the timing built almost snapped. One of the bolts on the timing belt cover came off and got in then shot a hole thru the belt. i got lucky because the belt was still intact and snugged tight on the cam pullys. I was thinking if the bolt might of did some damage on the pullys or whatever is in there. The bolt btw shot right thru the valve cover on the timing belt side.

Re: High Pitch Screaming sound? Help!!! (saberwing)
 

WOW!!!!! That might be your problem right there... something was most likely damaged in the head. Foreign objects don't go well with enginges.

Re: High Pitch Screaming sound? Help!!! (BoSox46GSr)
 

funny thing is before i had the belt replaced i had no issues with any sounds. Car runs well and still does. According to the mechanic his suspicion is the oil is not circulating to the head and maybe creating the head to get hot. Just a speculation. he wants to install a oil pressure gauge to see if I am having an oil pressure problem. I am hoping it's something like my crank bearing etc...

also according to the mechanic when he removed my cam lobes the engine visually looks fine except i had some very very slight grooves on the douls or jouls or where the cam float son top like depressions.




Modified by saberwing at 4:48 PM 10/15/2008