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Finding and fixing a "tweet" sound --need help

R

rwkay57

Guest
Sometimes I can hear a high-pitched "tweeting" kind of sound in the cabin of my C5 coupe. It seems to be coming from in front of the driver. It can be heard when driving or in idle. Vibration seems to intensify it. However, sometimes it will disappear for a few days. Already changed the serpentine without results. It's not the fan.
On advice from the forum, I had the idler pulley changed last weekend. Sadly, problem still not solved.
Any advice on next move would be most welcome. This thing is really getting me down.
Thanks,
Rwkay57
 

Scissors

Active member
Joined
Feb 12, 2002
Messages
29
Location
East Coast
Some people with this problem have found it to be the alternator. Does the sound become more rapid if you rev it slightly?
 

poorboys831

Well-known member
Joined
Nov 1, 2001
Messages
146
Location
charleston,s.c.usa
Corvette
1993 ruby red coupe
Had a similiar problem with my '99 it took them awhile changed "the belt" then the alt.,checked ps pump,belt tensioner,and finally the harmonic balancer-bingo-sounds all normal .Who knows sometimes the process of elimination works:r
 

c4c5specialist

Technical Advisor
Joined
May 29, 2001
Messages
3,682
Location
New Haven, Ct. USA
Corvette
Nope, but someday.
Hi there,
I would recommend that you look at your balancer, located in the center of the engine, at the bottom, just behind the rack.
Please look to see if that pulley is wobbling.
If it is, they may have to replace the balancer.
Please keep us posted, c4c5:hb
 

hcolon

Well-known member
Joined
Mar 19, 2002
Messages
105
Location
miami fl
Corvette
1999 c5 coupe
This is a different subject, hope I am not being rude, but has anyone experienced steering problems when going over soft shoulderss are lane creases in the road? Does the car want to steer itself ? Also over bumps, does the car tend to want to go either direction ?
 

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