Fox T-Bird/Cougar Forums

Technical => Engine Tech => Topic started by: tcanthonyii on August 22, 2006, 10:57:21 PM

Title: Nasty High pitch squeal
Post by: tcanthonyii on August 22, 2006, 10:57:21 PM
Hey all,

I finally got the cougar running decent.  Turns out one of the intake gaskets was fubared.  The used egine I put in had sat for 3 months and probably a little longer in the car, it had coroded between cooling port and exhaust port.  Anyway.

Now when i'm driving the car and holding the foot feed at a constant place (ie: not accelerating or decelerating, cruising)  at or above 65mph there is a nasty nasty high pitch sqeal.  Below 60 it sounds almost like a vaccuum leak but not quite.  It is still a squal but doesn't sound like something is moving fast enough to sqeal. 

Last year after my accident I had the same problem.  When i changed out the alternator and regulator I had no problems.  I did the same this year as both had gone bad from sitting (presumably) and I still have the sqeal. 

It's so obnoctious it makes my head hurt.  Any ideas.  The vehicle is an 86 cougar with the 3.8l and 55k on the engine and 195k on the throttle body.

tc
Title: Nasty High pitch squeal
Post by: V8Demon on August 23, 2006, 12:07:24 AM
Checked your wheel bearings recently?
Title: Nasty High pitch squeal
Post by: tcanthonyii on August 23, 2006, 01:09:31 AM
just the other day and had no play in them.  It seems attached to the actual foot feed.  IE if i push it down, even a little it goes away and if i let up on it a little it will dissapear.  If i flutter the pedal it will go in and out.

tc
Title: Nasty High pitch squeal
Post by: Keltel on August 26, 2006, 09:31:21 PM
Still got the smog system? My pump froze up shortly after did that.
Title: Nasty High pitch squeal
Post by: Clayton on August 26, 2006, 09:42:01 PM
PS pump?

*shrug*
Title: Nasty High pitch squeal
Post by: tcanthonyii on August 27, 2006, 12:53:28 AM
You know, the smog pump possibly makes sence.  It is brand new.  The old on locked up in 2 days.  From the time i parked the car to change the engine to the time I took it off.  There is a break in period for those and that could quite possibly be the cause of it.  I hadn't though of that.  I would have though the break in would have been done now though.  Just about a thousand mile on it.

My buddy has a stethescope.  I mite put my ear up on the PS and SP to see what's up.

Thanks guys.
tc
Title: Nasty High pitch squeal
Post by: softtouch on August 27, 2006, 03:40:38 PM
Try dribbling a little water on the ribs side of the belt. If it goes away for awhile it could be a pully alignment problem. Or it could be the belt. I have had belts that I couldn't make stop squealing. Sometimes turning the belt around to run in the opposite direction helps.
Title: Nasty High pitch squeal
Post by: tcanthonyii on August 27, 2006, 08:21:45 PM
Brand new belt and I know that's not the problem.  It's a differnt kind of sqeal.  And has followed 2 differnt belts.  I did do your test though to verify and that' didn't fix it either.  My buddy wnet for a ride with me in it today.  He's a military mechanic.  He thinks it's something in the CFI.

tc
Title: Nasty High pitch squeal
Post by: 5.0willgo on August 28, 2006, 12:35:47 PM
Belt tensioner? :dunno:
Mine started as an occasional squeal on acceleration and then squealed while cruising and eventually locked up.
Title: Nasty High pitch squeal
Post by: tcanthonyii on September 15, 2006, 12:41:57 AM
New tensioner as well. It's driving me nuts.  When the car starts up i've noticed a squeak when it first starts and it sounds odly like a belt so maybe it is the bel causing the problem.  If i run soap on the belt you think that would help diagnose it or ruin the belt.

tc
Title: Nasty High pitch squeal
Post by: softtouch on September 15, 2006, 04:43:36 PM
Quote from: tcanthonyii;104037
When the car starts up i've noticed a squeak when it first starts and it sounds odly like a belt so maybe it is the bel causing the problem.  If i run soap on the belt you think that would help diagnose it or ruin the belt.tc


I wouldn't use anything that will leave a residue on the pulleys.

Squeaking on start-up is usually a loose belt. It is slipping on the alternator. The alternator has a heavy load on it recharging the battery power you used to start the car.