'87 LB9 / MM5 --High pitch 'chirp'; goes away when the clutch pedal is depressed
'87 LB9 / MM5 --High pitch 'chirp'; goes away when the clutch pedal is depressed
My Formula has the 5-speed and an annoying chirp that sounds like the throwout bearing -- a high pitched metallic 'chirp' that sounds like crickets.
Not loud, but it is there. It goes away when you step on the clutch pedal even just enough to start engagement.
The procedure in the shop manual has you taking out most of the driveline to replace the throwout-- is there something else it might be before I start taking it apart?
The car is stock as a nail; clutch was replaced about 5000 miles ago after a theft. Otherwise, it runs perfect.
Any help is appreciated!
BOB
Not loud, but it is there. It goes away when you step on the clutch pedal even just enough to start engagement.
The procedure in the shop manual has you taking out most of the driveline to replace the throwout-- is there something else it might be before I start taking it apart?
The car is stock as a nail; clutch was replaced about 5000 miles ago after a theft. Otherwise, it runs perfect.
Any help is appreciated!
BOB
Joined: Jul 2000
Posts: 6,530
Likes: 94
From: Aridzona
Car: `86 SS / `87 SS
Engine: L69 w/ TPI on top / 305 4bbl
Transmission: `95 T56 \ `88 200-4R
Re: '87 LB9 / MM5 --High pitch 'chirp'; goes away when the clutch pedal is depressed
Originally posted by Ragtop Man
is there something else it might be before I start taking it apart?
is there something else it might be before I start taking it apart?
Senior Member
Joined: Feb 2004
Posts: 542
Likes: 0
From: Lowell, MA
Car: 91 Formula, 95 GT
Engine: 5.7, 5.0
Transmission: T5, T5
Axle/Gears: 3.42:1, ???
This may not be the throwout bearing. I have had the same problem and I read somewhere on here (in a tech article I think) that this is a frequency vibration that is easily cured by removing the shift fork rubber boot and using a good quality high temp. grease (like wheelbearing grease) on the pivot ball. It worked for me. Like I said before I think there is a tech article that goes in to greater detail.
Senior Member
Joined: Feb 2004
Posts: 542
Likes: 0
From: Lowell, MA
Car: 91 Formula, 95 GT
Engine: 5.7, 5.0
Transmission: T5, T5
Axle/Gears: 3.42:1, ???
Here is the tech article https://www.thirdgen.org/newdesign/t...ngclutch.shtml
like I said, it worked for me.
like I said, it worked for me.
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