Subaru

Have Subaru Questions? Ask a Subaru Mechanic and Get Answers ASAP

Ask an Expert,
Get an Answer ASAP!

Subaru

Recently when accelerating or going uphill, my 04 Forester

Customer Question
Recently when accelerating or going...
Recently when accelerating or going uphill, my '04 Forester XS seems to make a high pitched whining or almost a whistling sound. What could this be?
Submitted: 8 years ago.Category: Subaru
Show More
Show Less
Ask Your Own Subaru Question
Answered in 8 hours by:
10/8/2009
Subaru Mechanic: Mike J, ASE Certified Technician replied 8 years ago
Mike J
Mike J, ASE Certified Technician
Category: Subaru
Satisfied Customers: 43
Experience: ASE Master Tech. Virginia State Inspector
Verified
Hello, automatic or manual? Does the pitch of the whine change with speed of the car or engine RPM's?
Ask Your Own Subaru Question
Customer reply replied 8 years ago
It's stick shift, and yes the pitch of the whine increases with RPM's or driving speed. The sound seems easiest to create under acceleration above ~3000 rpms. When I've tried to create it in my driveway with the car in neutral and revving the engine, the car doesn't seem to do it nearly as loud. The car has 81,900 miles, but has been very well cared for (regular maintenance, no off road, no extreme temps since I live in LA). Thanks! -Dan
Subaru Mechanic: Mike J, ASE Certified Technician replied 8 years ago
This is where I would start......If you can hear it sitting still and reving the engine.....remove the drive belt. This will show whether it is a appendage making the noise, such as alt, ac, ps, idler etc.
Ask Your Own Subaru Question
Customer reply replied 8 years ago
Thanks. That's probably more than I have time to deal with. But I appreciate your help.
Subaru Mechanic: Mike J, ASE Certified Technician replied 8 years ago
Your quite welcome, without doing some testing I would just be guessing and I dont want to do that. I did pull up the car for any noise related TSB's and there are none listed for your senerio. Good luck!
Ask Your Own Subaru Question
Customer reply replied 8 years ago
Relist: I still need help.
Customer reply replied 8 years ago
I have more info that may be helpful. The sound is only present when the engine is under at least a moderate strain, such as hard acceleration from a stop light or trying to accelerate up a moderately steep hill. Once the strain is decreased (by letting up on the gas just a bit) the sound goes away. It does NOT seem like the pitch of the sound increases with engine speed. Today I did an experiment: I was going uphill at about 50mph in 4th gear, tachometer at about 3,000rpms and no sound. I pressed the gas pedal about an inch or so and the high pitched whirring sound started. The car accelerated to about 55-60mph and the whirring sound continued until I let off the gas. While maintaining 55-60mph there was no sound, but when I pressed the pedal again, the sound started again. So the sound is only there when the engine is trying to accelerate, not when it's maintaining speed!
Subaru Mechanic: Mike J, ASE Certified Technician replied 8 years ago

Dan, nice test. So under strain it makes the noise in 4th gear. Sounds like a drivetrain noise coming from the transaxle. If the noise occurs in 4th try 5th or 3rd same senerio.

If the noise is still there have someone check the transaxle. See if the fluid is clean ie. no metal shavings, severe burnt smell.

Ask Your Own Subaru Question
Customer reply replied 8 years ago
It'll do it in any gear. Just need to have the revs above ~3,000 to 3,500.
Customer reply replied 6 years ago

Mike,

I just got a follow-up email asking me if my question has been answered. Unfortunately it hasn't. I've taken the car to a Subaru dealership as well as an independent Subaru shop and neither one has any idea what the problem could be. I did find other Forester drivers report the same issue on http://www.subaruforester.org/ at: http://www.subaruforester.org/vbulletin/f88/whistle-noise-under-power-58640/.

 

-Dan

Subaru Mechanic: I. Silva, ASE Certified Technician replied 6 years ago
I. Silva
I. Silva, ASE Certified Technician
Category: Subaru
Satisfied Customers: 1,649
Experience: auto mechanic
Verified
Hello....Maybe i can help you ....You need to check the exhaust resonator pipe , it cracks right where the pipe meets the resonator (front of it) and also on the same pipe the gaskets go bad and when you step on the gas they sound just like a whistle....Good luck....thank you .....accept my answer if i helped...
I. Silva
I. Silva, ASE Certified Technician
Category: Subaru
Satisfied Customers: 1,649
Experience: auto mechanic
Verified
I. Silva and 87 other Subaru Specialists are ready to help you
Ask your own question now
Customer reply replied 6 years ago
Thanks for getting back to me. I'll check it and get back to you!!
Subaru Mechanic: I. Silva, ASE Certified Technician replied 6 years ago
Ok....Let me know..
Ask Your Own Subaru Question
Customer reply replied 6 years ago
I think you may be right. But can you tell me where I'd find the exhaust resonator pipe on an '04 Forester? There's a lot of exhaust pipes under there and it seems most of them are covered with heat shields. Thanks- Dan
Ask I. Silva Your Own Question
I. Silva
I. Silva
I. Silva, ASE Certified Technician
Category: Subaru
Satisfied Customers: 1,649
1,649 Satisfied Customers
Experience: auto mechanic

I. Silva is online now

A new question is answered every 9 seconds

How JustAnswer works:

  • Ask an ExpertExperts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional AnswerVia email, text message, or notification as you wait on our site. Ask follow up questions if you need to.
  • 100% Satisfaction GuaranteeRate the answer you receive.

JustAnswer in the News:

Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.

What Customers are Saying:

I would (and have) recommend your site to others I was quite satisfied with the quality of the information received, the professional with whom I interacted, and the quick response time. Thanks, and be sure that I'll be back whenever I need a question answered in a hurry.

Stephanie PElm City, NC

used your service this weekend with "Trecers" help. thank you ,thank you, thank you. replaced an A/C fan motor. Local Auto Zone had part. $15.00 "tracer" fee and $40.00 for parts, I saved several hundreds of dollers at a shop. i will recommend you and use you in the future.

David L.Richmond, TX

9 dollars, 2 hours of my time, and I drove away. Your diagnosis was right on the mark. Thank you so much.

PhilMarysville, CA

Lurch. Thank you very much. I had real doubts about this website but your promptness of response, quick followup and to the point answer with picture was incredible.

CharlesWalnut Creek, CA

As a single woman, I really appreciate an excellent and affordable opinion.
Thank you Geordie, I will not hesitate to contact justanswer in the future!

SueCharleston, WV

Another great insight to what may be the problem. I will have my mechanic take a look at it tomorrow. Thanks again, Frank...you do indeed know your stuff.

JimCastleberry, FL

Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help.

Mary C.Freshfield, Liverpool, UK

< Previous | Next >

Meet the Experts:

Kevin C.

Kevin C.

Subaru Master Tech.

1,727 satisfied customers

34 years of Subaru service experience, ASE Master Technician.

George H.

George H.

Subaru Certified Technician

1,321 satisfied customers

ASE Master Tech 15 + Years

Tim Mohr

Tim Mohr

ASE MASTER TECH

408 satisfied customers

30 YRS EXPERIENCE, FOREIGN AND DOMESTIC, GAS AND DEISEL

Matt

Matt

Engineer

355 satisfied customers

Mechanical Engineer with 20 years experience in the auto industry, 8 yrs in formula 1 engine testing

Chris(aka-Moose)

Chris(aka-Moose)

Subaru Technician

280 satisfied customers

16 years of experience

Ron Z.

Ron Z.

- Subaru Tech -

236 satisfied customers

18+yrs experience. State Inspector and Subaru Diagnostics

Don - Mo Lurch

Don - Mo Lurch

Subaru Mechanic

188 satisfied customers

Heavy Line Mech, Race Shop Owner, Mobile Electronics.

< Previous | Next >

Related Subaru Questions
I have a 2005 Outback XLT Limited with the 2.5L turbo engine
I have a 2005 Outback XLT Limited with the 2.5L turbo engine and 118K miles. The engine began to cycle between surging and decelerating under acceleration. Then the "Check Engine" light came on and th… read more
Gunvir Singh
Gunvir Singh
1,706 satisfied customers
I have same problem with brake & battery light on "01" Bean,
I have same problem with brake & battery light on "01" Bean, took alt off an part store said it was putting out 14.5...I put it back in an some thing...I read what you told someone else about turning … read more
3pac2222
3pac2222
nissan master auto tech
Associate Degree
2 satisfied customers
Control panel lights flickered on/off followed by total
Control panel lights flickered on/off followed by total electrical failure when backing out of parking spot. No control panel lights. Dead ignition. Not even the emergency flashers would work. Eventua… read more
tamaz22
tamaz22
60 satisfied customers
My lift gate will not open and alarm sounds while driving.
My lift gate will not open and alarm sounds while driving … read more
tamaz22
tamaz22
60 satisfied customers
My security light started blinking real fast then slowed
My security light started blinking real fast then slowed down to two blinks a pause and two blinks. It's never done thsi before-it's usually a steady blink. … read more
Chris(aka-Moose)
Chris(aka-Moose)
Subaru Technician
Vocational, Technical or Trade School
280 satisfied customers
I have an 07 Foerster 2.5 non turbo that threw a p0402 code
I have an 07 Foerster 2.5 non turbo that threw a p0402 code about 3 weeks ago. Been driving fine until the other day on the highway, I went to accelerate to pass and the engine bogged down. It smells … read more
Matt
Matt
Engineer
Bachelor's Degree
355 satisfied customers
2003 Impreza outback sport with p0030 code, replaced o2
2003 Impreza outback sport with p0030 code, replaced o2 sensor and code still coming up, check power and ground to the harness and have 12 volt to red/yellow and black grounds, what else could be wron… read more
baddad1
baddad1
technician
High School or GED
5 satisfied customers
Battery on my new 2017 Subaru Forester runs down - car on,y
battery on my new 2017 Subaru Forester runs down - car on,y has 3400 miles on it. … read more
Eric
Eric
Retired
N/A
14,436 satisfied customers
I have a 2011 Subaru Outback. Both low beam headlights went
Hello. I have a 2011 Subaru Outback. Both low beam headlights went out at same time. Replaced left bulb. Still not working. Fuses for R and L headlight in engine compartment are both ok. Any thoughts?… read more
tamaz22
tamaz22
60 satisfied customers
Can I replace LED headlights on a 2017 impresa ltd with hid
can I replace LED headlights on a 2017 impresa ltd with hid headlights … read more
Gabriel Grey
Gabriel Grey
Master Service Technician
Associates
189 satisfied customers
New 2017 Legacy Limited. Four times now, the car has made a
New 2017 Legacy Limited. Four times now, the car has made a very loud metallic grating noise; car beeps(like an alert); and the car stops itself. Has always happened at low speeds and both driving for… read more
Chris(aka-Moose)
Chris(aka-Moose)
Subaru Technician
Vocational, Technical or Trade School
280 satisfied customers
1999 legacy outback 2.5L M/T, problem is when I come to
1999 legacy outback 2.5L M/T, problem is when I come to stop, let foot off throttle apply brake push in clutch pedal, engine dies, if I crank engine with key from run position engine starts on two or … read more
tamaz22
tamaz22
60 satisfied customers
My 2004 Subaru is running really rough. It hasn't ever
My 2004 Subaru is running really rough. It hasn't ever broken down (Subarus rock!), but we cannot figure out why it runs rough. It feels draggy and sounds like it's running over a really rough road. W… read more
tamaz22
tamaz22
60 satisfied customers
The radio suddenly stopped working in my 2004 Subaru
The radio suddenly stopped working in my 2004 Subaru Forester yesterday. Nothing else seems amiss. … read more
Mechanic01
Mechanic01
1,160 satisfied customers
It feels like it's misfiring when idling on low. I mean
It feels like it's misfiring when idling on low JA: How many miles are on the car? Is it a steady misfire? Or random? Customer: I mean idling when I am stopped at a light JA: What is the make/model/ye… read more
Chad Farhat
Chad Farhat
Owner
Associate Degree
4,012 satisfied customers
Clunking while turning at slow speed. Sounds like the CV
Sounds like the CV joints so I replaced both half shafts with newly remade shafts. Noise is still there. … read more
David Craig
David Craig
OWNER/MECHANIC
Associates
3,938 satisfied customers
My battery died. left the dome light on. Had it jumped and
my battery died. left the dome light on. Had it jumped and now the idle is very rough. almost stalls at a stop light. the Rpm is near zero when I stop … read more
baddad1
baddad1
technician
High School or GED
5 satisfied customers
My sons 2015 outback wont start and thinks he locked the
My sons 2015 outback wont start and thinks he locked the security system, any ideas, and the steering wheel won't turn....just finished*****to Maine and needs to drive home... … read more
tamaz22
tamaz22
60 satisfied customers
Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Show MoreShow Less

Ask Your Question

x