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Old 10-09-2007, 12:14 PM   #1
mcrawford
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Member#: 142601
Join Date: Mar 2007
Location: Ontario, Canada
Vehicle:
2006 STI
Rally Blue

Default High Pitch Grinding Sound When Shifting Into 4th Gear

2006 sti, 15k miles...

Sometimes when I'm shifting into 4th gear i hear a high pitch gear-grinding sound.

The best way I can describe the sound is like when you are drilling in drywall screws and your get to the very end of the screw going into the drywall/stud... it makes a 1/2 second *ehnt* noise... which means you can't screw it in any further... make sense?

My mechanic told me that when you press the clutch sometimes there is a possibility that air is getting in there in which case the hydraulics to not fully engaging the clutch ???

Does this make any sense? Wouldn't it then do it all the time?

I'm confused.. it's only done this about 5 times so far over the past few months...

Your thoughts?
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Old 10-09-2007, 12:15 PM   #2
boostdog
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Join Date: May 2007
Location: NW Arkansas
Vehicle:
07 wrx tr
rr tuned stg2 12.8@105mph

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I would take it to the dealer and let them look at it...there is no way air is in there like that....that's just stupid!
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Old 10-09-2007, 12:47 PM   #3
djsniggedy
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What you lookin at
willis?

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Is this at high speed or just calm regular driving? Possibly a worn syncro? I know wrx's have a high speed 4-5 grind occasionally...but I'm not sure about your case.
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Old 10-09-2007, 01:10 PM   #4
mcrawford
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Location: Ontario, Canada
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2006 STI
Rally Blue

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Quote:
Originally Posted by djsniggedy View Post
Is this at high speed or just calm regular driving? Possibly a worn syncro? I know wrx's have a high speed 4-5 grind occasionally...but I'm not sure about your case.
Yes! High speed only... accelerating onto hwy usually after engine is hot...
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