Riv Performance
Would you like to react to this message? Create an account in a few clicks or log in to continue.

The 8th Gen Riviera Resource
 
HomeDashboardLatest imagesSearchRiviera Questions & AnswersWrite-Ups IndexRegisterRelated LinksLog in

 

 Whine or whistle in engine bay under hard acceleration

Go down 
4 posters
AuthorMessage
albertj
Master
albertj


Name :
Location : Finger Lakes of New York State
Joined : 2007-05-31
Post Count : 8576
Merit : 180

Whine or whistle in engine bay under hard acceleration Empty
PostSubject: Whine or whistle in engine bay under hard acceleration   Whine or whistle in engine bay under hard acceleration EmptyMon Oct 08, 2007 1:23 pm

Asking for help to find / fix a high pitched whine or whistle in my engine bay. I can reliably get the noise at 1/2 - 3/4 throttle if over 2500 RPM and accelerating.

This has been going on for a while now. It is not real loud - matter of fact if the radio is on you can't hear it much at all.

I am thinking it might be transmission - not gear noise but some kind of servo noise - as I can on ly get the noise under load. THat is, in Park if I move the throttle around I can not reproduce the noise. And it is easier to get the noise running uphill.

Any ideas?

abertj
Back to top Go down
Jason
Aficionado
Jason


Name : Jason
Age : 40
Location : Comox, BC, Canada
Joined : 2007-01-23
Post Count : 1378
Merit : 65

Whine or whistle in engine bay under hard acceleration Empty
PostSubject: Re: Whine or whistle in engine bay under hard acceleration   Whine or whistle in engine bay under hard acceleration EmptyMon Oct 08, 2007 1:56 pm

you don't have a supercharged 3800 do you? it is a known issue with them.
Back to top Go down
http://www.cardomain.com/id/Doctor_Meltdown
AA
Administrator
AA


Name : Aaron
Age : 46
Location : C-bus, Ohio
Joined : 2007-01-13
Post Count : 18448
Merit : 251

Whine or whistle in engine bay under hard acceleration Empty
PostSubject: Re: Whine or whistle in engine bay under hard acceleration   Whine or whistle in engine bay under hard acceleration EmptyMon Oct 08, 2007 2:50 pm

Mine started doing this at around 110k miles, sounds louder driving in lower gears. At 138k miles, I wrote INTENSE Racing about the problem; they gave this reply:

"Usually when clutches are worn the pump will whine because the pcm commands the pcs to give more pressure to stop the slipping. I'd say with that mileage you have it's time for a rebuild."

That was from July of this year. I've decided that if the transmission dies, I'll pay for rebuild or replacement. Otherwise, I'm going to live with it. It actually reminds me of a racing trans... kind of like it!

_________________
'05 GTO 6.0L • 6-spd • 95k miles • 0-60: 4.8s • 16.9 avg MPG • Nelson Ledges Lap: 1:26

'95 Celica GT 2.2L • 5-spd • 165k miles • 0-60: yes

'98 SC Riviera • 281k miles • 298 HP/370 TQ • 0-60: 5.79s • ET: 13.97 @ 99.28 • 4087 lb • 20.1 avg MPG • Nelson Ledges Lap: 1:30
3.4" pulley • AL104 plugs • 180º t-stat • FWI w/K&N • 1.9:1 rockers • OR pushrods • LS6 valve springs • SLP headers • ZZP fuel rails
KYB GR2 struts • MaxAir shocks • Addco sway bars • UMI bushings • GM STB • Enkei 18" EV5s w/ Dunlop DZ101s • F-body calipers
EBC bluestuff/Hawk HP plus • SS lines • Brembo slotted discs • DHP tuned • Aeroforce • Hidden Hitch

^^^ SOLD ^^^ frown

'70 Ninety-Eight Holiday Coupe 455cid • 116k miles
^^^ SOLD ^^^ frown
Back to top Go down
http://www.cardomain.com/ride/657082/4
albertj
Master
albertj


Name :
Location : Finger Lakes of New York State
Joined : 2007-05-31
Post Count : 8576
Merit : 180

Whine or whistle in engine bay under hard acceleration Empty
PostSubject: Re: Whine or whistle in engine bay under hard acceleration   Whine or whistle in engine bay under hard acceleration EmptyMon Oct 08, 2007 4:13 pm

Hmmm.... I have abot 172,000 miles. Transmission was rebuilt once, at about 97,000 miles, to repair the overdrive TCC solenoid. It is warranted. I am supposed to take it back every 40K or so for a checkup... so it might be time, have to look at my notes. That said, when it is time for a check I will talk to that mechanic about the whine. [in the meantime, pass the cheese...]

And I do have a supercharged 3800. I have never touched the blower except to open the fill hole to change or top off the special oil. The blower has always gently whined under hard acceleration (kind of pleasingly, actually). This sound is more of a whistle.

I have Alex Peper's Car-Code diagnostic software for my laptop. If I connect Car-Code to the car (it will take a log of the sensors and comptuers) can I see if the PCS is being commanded to apply extra pressure?

Thanks

albertj
Back to top Go down
Jason
Aficionado
Jason


Name : Jason
Age : 40
Location : Comox, BC, Canada
Joined : 2007-01-23
Post Count : 1378
Merit : 65

Whine or whistle in engine bay under hard acceleration Empty
PostSubject: Re: Whine or whistle in engine bay under hard acceleration   Whine or whistle in engine bay under hard acceleration EmptyMon Oct 08, 2007 4:17 pm

I was just kidding about it being the SC wink
Back to top Go down
http://www.cardomain.com/id/Doctor_Meltdown
albertj
Master
albertj


Name :
Location : Finger Lakes of New York State
Joined : 2007-05-31
Post Count : 8576
Merit : 180

Whine or whistle in engine bay under hard acceleration Empty
PostSubject: Re: Whine or whistle in engine bay under hard acceleration   Whine or whistle in engine bay under hard acceleration EmptyFri Jun 14, 2019 2:17 pm

It's been more than a *decade* and I finally found this whistle - in my case it was a small air leak at the supercharger-plenum gasket (not the LIM). Fixed Wednesday.

Jason wasn't kidding, although his guess wasn't provable without a lot of wrenching.

Albertj
Back to top Go down
jbird
Fanatic
jbird


Name : Jeff
Location : Cleveland area
Joined : 2013-11-11
Post Count : 364
Merit : 6

Whine or whistle in engine bay under hard acceleration Empty
PostSubject: Re: Whine or whistle in engine bay under hard acceleration   Whine or whistle in engine bay under hard acceleration EmptyFri Jun 14, 2019 5:44 pm

You are a very patient man!!
clap
Back to top Go down
albertj
Master
albertj


Name :
Location : Finger Lakes of New York State
Joined : 2007-05-31
Post Count : 8576
Merit : 180

Whine or whistle in engine bay under hard acceleration Empty
PostSubject: Re: Whine or whistle in engine bay under hard acceleration   Whine or whistle in engine bay under hard acceleration EmptySun Jun 16, 2019 9:44 pm

jbird wrote:
You are a very patient man!!
clap

I figured I'd say what I found. This is why this *site is so helpful...
Back to top Go down
jbird
Fanatic
jbird


Name : Jeff
Location : Cleveland area
Joined : 2013-11-11
Post Count : 364
Merit : 6

Whine or whistle in engine bay under hard acceleration Empty
PostSubject: Re: Whine or whistle in engine bay under hard acceleration   Whine or whistle in engine bay under hard acceleration EmptySun Jun 16, 2019 10:19 pm



[/quote] I figured I'd say what I found. This is why this *site is so helpful...[/quote]

I agree 100%
There has been threads that I have read pages & pages of dialogue & the thread stops without the final fix/resolution.
I was seriously impressed you finally got to fixing the issue after all this time.
Sharing your finding is a great thing, it may help someone else down the road.

Jbird
Back to top Go down
albertj
Master
albertj


Name :
Location : Finger Lakes of New York State
Joined : 2007-05-31
Post Count : 8576
Merit : 180

Whine or whistle in engine bay under hard acceleration Empty
PostSubject: Re: Whine or whistle in engine bay under hard acceleration   Whine or whistle in engine bay under hard acceleration EmptyMon Jun 17, 2019 12:04 am

I didn't know it was an issue... I changed the manifold gaskets for maintenance because I had pulled the throttle body and found that gasket had failed. So I set aside time for the manifold gaskets, which are the other coolant related gaksets on the engine.
Back to top Go down
Sponsored content





Whine or whistle in engine bay under hard acceleration Empty
PostSubject: Re: Whine or whistle in engine bay under hard acceleration   Whine or whistle in engine bay under hard acceleration Empty

Back to top Go down
 
Whine or whistle in engine bay under hard acceleration
Back to top 
Page 1 of 1

Permissions in this forum:You cannot reply to topics in this forum
Riv Performance ::   Supercharged 3800 Tech :: Series II Engine & Transmission-
Jump to: