Volvo

Have Volvo Questions? Ask a Volvo Mechanic for Answers ASAP

Ask an Expert,
Get an Answer ASAP!

Volvo

My Volvo is making a whistling sound when starting from a

Customer Question
Customer: my Volvo is making...
Customer: my Volvo is making a whistling sound when starting from a stop. It fades as I drive and keep shifting. But then the check engine light came on.
JA: Thanks. Can you give me any more details about your issue?
Customer: no odd smells or other sounds. no other leaks. I have had about everythin on this car fixed that one can do and just recently
JA: OK got it. Last thing — JustAnswer charges a fee (generally around $18) to post your type of question to Volvo Experts (you only pay if satisfied). There are a couple customers ahead of you. Are you willing to wait a bit?
Customer: sure
JA: OK. Now I'm going to take you to a page to place a secure deposit with JustAnswer. Don't worry, this chat is saved. After that, we will finish helping you.
Submitted: 1 year ago.Category: Volvo
Show More
Show Less
Ask Your Own Volvo Question
Answered in 5 hours by:
12/22/2015
Volvo Mechanic: Matt, Engineer replied 1 year ago
Matt
Matt, Engineer
Category: Volvo
Satisfied Customers: 22,166
Experience: Mechanical Engineer with 20 years experience in the auto industry, 8 yrs in formula 1 engine testing
Verified

Normal
0
false
false
false
EN-US
X-NONE
X-NONE
MicrosoftInternetExplorer4
Hello

This could be an airleak after the airflow meter, any air dragged in here isn't 'seen' by the ECU and so not compensated for and can lean the engine out and can also allow the engine to rev up when not desired causing rough running.

As its a mechanical fault it tends not to turn on the fault light and you can sometimes hear a 'hissing' or whistling noise with the engine running.

Check the hose clips for tightness and inspect the trunking for any cracks or splits and also all the vacuum system, the small bore pipes and fittings for cracks and missing parts.

The best way to locate a leak is to have the engine running and warm and then spray lighter gas /propane around each joint in turn. If the engine rev's up you've found your leak.

Now you might think that spraying lighter gas around a hot engine isn’t wise, however the flash /ignition point of gas is about 400°C so you need a naked flame or spark to set it off and I’ve used this method for many years without incident.

Work your way through each possible joint one at a time and you should find it. I use a slightly flattened piece of brake pipe and some rubber hose from the can of lighter gas to provide a spraying 'wand' and allow a direct blast of gas into each area, especially those difficult to reach with large implements.

Might also be worth checking the wiring and connector to the airflow meter for any signs of corrosion or damage. you can do a quick fault find if you unplug the meter and run the engine without it.

if the engine condition is the same then chances are the meter or the connection to it is faulty

Air leaks are very temperature dependent as gaps can open or close up as things expand with heat, so the weather and engine temperature can effect them.

This leads them to be quite intermittent in the case of mild leaks

its also worth cleaning the airflow meter by removing it from the car and spraying the exposed sensor wires inside the tube with a brake or switch cleaner - ensure that the cleaner is one of the old fashioned, non Eco type that does not leave a residue

On no account touch the sensor wires with anything physical as they are extremely fragile

Ask Your Own Volvo Question
Volvo Mechanic: Matt, Engineer replied 1 year ago

Hi

do you still need help?

Bear in mind that the site takes a deposit from you at the beginning andthis is held by the site until you rate my answer at which point the cash issplit between the site and the expert. so if my answers have been helpfulplease rate my answer.

Ask Your Own Volvo Question
Ask Matt Your Own Question
Matt
Matt
Matt, Engineer
Category: Volvo
Satisfied Customers: 22,166
22,166 Satisfied Customers
Experience: Mechanical Engineer with 20 years experience in the auto industry, 8 yrs in formula 1 engine testing

Matt 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:

The nearest Volvo dealer is 160 miles away. Best $15 bucks I have spent in a long time!

Paul MCorpus Christi, TX

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

< Previous | Next >

Meet the Experts:

Enes

Enes

VOLVO Master Technician

4,911 satisfied customers

18+YEARS WITH VOLVO AS THE MASTER VOLVO MECHANIC&Ase

Andy

Andy

Volvo Expert Technician

3,740 satisfied customers

One of only a handful of ACTUAL Volvo dealership technicians on JA, ASE Master Certified with L1

volvoexpert1

volvoexpert1

ASE Certified Technician

1,001 satisfied customers

Volvo Master Technician with 15 years excusively with Volvos. Also ASE L1certified for over 10 years.

dramey

dramey

ASE Certified Technician

669 satisfied customers

have worked on volvo's for 4 years and am a ase master mechanic. current shop foreman

Chris (aka-Moose)

Chris (aka-Moose)

Technician

526 satisfied customers

16 years of experience

Tim Mohr

Tim Mohr

ASE MASTER TECH

518 satisfied customers

30 YRS EXPERIENCE, FOREIGN AND DOMESTIC, GAS AND DEISEL

Jim B

Jim B

ASE Certified Technician

504 satisfied customers

40 years Import and domestic AAA Approved Shop owner 30 yrs

< Previous | Next >

Related Volvo Questions
Hard starting and very rough idle at low rpm engine runs
hard starting and very rough idle at low rpm engine runs fine under load … read more
Matt
Matt
Engineer
22,166 satisfied customers
Having issues removing the rear disk brake from a 2013 Volvo
Having issues removing the rear disk brake from a 2013 Volvo XC90R … read more
Matt
Matt
Engineer
22,166 satisfied customers
The message center says engine system service required and
The message center says engine system service required and the check engine light went on in my xc90 volvo … read more
Merc320
Merc320
Highbury College
352 satisfied customers
My wife's 1994 940 Volvo has a braking issue. Hard to
My wife's 1994 940 Volvo has a braking issue. Hard to understand what exactly except it is not consistent -- there is unevenness of braking. I think the pedal feels softer. What is quite apparent when… read more
Pete
Pete
Independent Auto Technician
Vocational, Technical or Trade Scho
138 satisfied customers
My 2005 XC90 brake lights won't turn off. Can you off
My 2005 XC90 brake lights won't turn off. Can you off guidance ? … read more
Eric
Eric
Retired
N/A
14,436 satisfied customers
I have volvo 2003 xc70 whit code po573 brake switch circuit
hi my name is ***** ***** have volvo 2003 xc70 whit code po573 brake switch circuit higt on dach didplay ENGINE SYSTEM SERVICE REQUIRED HOW TO FIX … read more
Dan
Dan
Automotive Technician
Vocational, Technical or Trade Scho
25 satisfied customers
2001 volvov70 3rd brake light not worken. It full. V70 all
2001 volvov70 3rd brake light not worken JA: Have you checked the brake fluid? How's the level and when was it last changed? Customer: it full JA: What is the model of your '01 Volvo? Customer: v70 al… read more
Pete
Pete
Independent Auto Technician
Vocational, Technical or Trade Scho
138 satisfied customers
Got a 07 plate c30 d5 comes up on dash with brake imobilizer
got a 07 plate c30 d5 comes up on dash with brake imobilizer problem see manual iv lost manual she wont fire i thought brake fluid low but fine iv disconected battery put battery back on still no good… read more
Pete
Pete
Independent Auto Technician
Vocational, Technical or Trade Scho
138 satisfied customers
1995 volvo 850, no rear brake pressure. Rear brake disks
1995 volvo 850, no rear brake pressure. Rear brake disks show no sign of touching of pads. … read more
eric remington
eric remington
FORMER SHOP OWNER/TECHNICIAN/INSPECTOR
associates degree
290 satisfied customers
2005 xc90 pulls to the left when braking, replaced right
replaced right side inner tie rod and left side rear control arm did and alignment … read more
Eric
Eric
Retired
N/A
14,436 satisfied customers
2004 Nissan quest with a 3.5l engine. the engine fans will
2004 Nissan quest with a 3.5l engine. the engine fans will not come on when it gets to temp. or when the a/c is turned on. where do I begin with this?… read more
Chad Farhat
Chad Farhat
Owner
Associate Degree
4,012 satisfied customers
I have a 2002 v 70. when i hit the brakes the car pulls to
i have a 2002 v 70. when i hit the brakes the car pulls to the right. when i power up it pulls back to the left. I've been told it's and alignment issue or engine mount problem. Any suggestion? … read more
Edward Clayton
Edward Clayton
Associate Degree
1,033 satisfied customers
Changed front rotors, brake pads and calipers on my 1992
Changed front rotors, brake pads and calipers on my 1992 Volvo 240. Miles = 140k. Bleeded the lines. New brake hoses installed by a professional within the past 12 months.Doing the repair myself . . .… read more
Eric
Eric
Retired
N/A
14,436 satisfied customers
My 2001 Volvo s80 brake light stays on but the middle one in
my 2001 Volvo s80 brake light stays on but the middle one in the glass works with the pedal so what could be wrong … read more
Chris (aka-Moose)
Chris (aka-Moose)
Technician
Vocational, Technical or Trade School
526 satisfied customers
Changed brake pads in front, now brakes are spongy. if
changed brake pads in front, now brakes are spongy. if engine is stopped brakes are hard, start the engine and it moves to the floor. … read more
Jaybird61
Jaybird61
Master Automotive Mechanic
1,900 satisfied customers
On a 2000 1.9t brake system is a vacuum reservoir in the
on a 2000 1.9t brake system is a vacuum reservoir in the system ? also what operates the vacuum pump ,is it the brake pedal, also whear is the control relay located ??? please advise … read more
Mechanic01
Mechanic01
1,160 satisfied customers
Xc-90 parking brake - release handle works, but car is
Xc-90 parking brake - release handle works, but car is frozen. Can't drive it a foot. … read more
Matt
Matt
Engineer
22,166 satisfied customers
Emergency brake has seized, I got the low brake fluid light
I got the low brake fluid light and took it in and they found that the brake had totally seized and is causing the car to drag … read more
Edward Clayton
Edward Clayton
Associate Degree
1,033 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