Subaru

Have Subaru questions? Ask a Subaru mechanic and get answers ASAP

Ask an Expert,
Get an Answer ASAP!

It keeps stalling when i slow down for intersections.

Customer Question
It keeps stalling when...

It keeps stalling when i slow down for intersections

Mechanic's Assistant: Is the check engine light on? Does the car stall at idle or when driving?

Driving and the check engine light comes on when it stalls

Mechanic's Assistant: What is the model/year of your Subaru?

2009 forrester

Mechanic's Assistant: Are you fixing your vehicle yourself? What have you tried so far?

New battery New spark pluds new spark leads new fuel filter engine clean

Mechanic's Assistant: Anything else you want the mechanic to know before I connect you?

Yes the car was involved in a rear end ccident 2 weeks ago. was drivable after the accident. went to panel beaters came back undrivable

Submitted: 6 months ago.Category: Subaru
Show More
Show Less
Ask Your Own Subaru Question
Answered in 1 minute by:
12/21/2017
Subaru Mechanic: tech0405, Technician replied 6 months ago
tech0405
tech0405, Technician
Category: Subaru
Satisfied Customers: 11,156
Experience: Certified technican 14 years experience
Verified

Is the check engine light on when this happens or while driving ?

Ask Your Own Subaru Question
Customer reply replied 6 months ago
Check engine light comes on when it stalls
Subaru Mechanic: tech0405, Technician replied 6 months ago

Have you had the trouble codes in the system yet to see why the light is being triggered ??

Ask Your Own Subaru Question
Customer reply replied 6 months ago
No was tested yesterday. No error codes
Subaru Mechanic: tech0405, Technician replied 6 months ago

Ok have they checked the fuel pressure while the vehicle is running to make sure the fuel pressure is not dropping when it dies out ??

Ask Your Own Subaru Question
Customer reply replied 6 months ago
All this was done yesterday by mechanic
Carried Out Yearly Service On Vehicle , This Involved A Vehicle Saftey Inspection.
The Oil And Oil Filter Were Relpaced And All The Levels Were Topped Up .
The Spark Plugs Were Due By Time And So Was The Fuel Filter . While Inspecting The Spark Plugs Found The Rocker Cover Gaskets Were Leaking Internal Via The Tubes Seal And Extenal Or The Rocker Cover .
Removed The Old Spark Plugs And Refitted New. .there Was Oil Everywhere It Was Cleaned As Best As It Could .the Spark Plug Leads Were Oil Soaked And They Were Removed And Replaced
.the Rocker Cover Gaskets Were Replaced. While The Rocker Covers Were Off The Valve Clearances Were Checked . The Drive Belt Was Worn And It Was Replaced With A New One And It Was Tensioned To Spec.
The Right Hand Head Light Globe Was Blown And It Was Replaced With New One .
The Fuel Pressure Was Checked And A New Fuel Filter Was Fitted .
The Battery Was Load Tested And Was Week A 8.5 Volts When It Was Load Tested , The Old Battery Was Removed And A New Battery Was Refitted .
performed Prostream Petrol Intake Decarb To Remove Built Up Carbon Deposits In The Induction System, Throttle Body And Egr Valve. Remove Air Intake, Set Up Application Tool And Apply Pressurised Prostream Petrol Cleaner Into Induction System.
Added Intank Fuel System Cleaner To Treat Fuel Tank And Rest Of Fuel System For Excessive Moisture. Labour To Perform:-Yearly Service Labour To Remove And Replace:-Champion Platinum Spark Plug Labour To Remove And Replace:-Permaseal Valve Cover Gasket Labour To Remove And Replace:- Ignition Lead Set Labour To Remove And Replace:-Filter-Fuel In Line Labour To Perform: Prostream Petrol Intake Decarb Labour To Remove And Replace:- High Performance Battery 540cca Labour To Remove And Replace:-Drive Belt-Micro V At Labour To Remove And Replace:-Narva H1 P14.5s Globe 12v 55w
993.39
Materials: Engine Oil- Penrite Hpr Fs (Qty 4.5) 80.87 Waste Management Levy 15.00 Van Supplies And Consumables 9.75 Oil Filter 18.38 Champion Platinum Spark Plug (Qty 4) 135.28 Permaseal Valve Cover Gasket (Qty 2) 354.08 Ignition Lead Set 176.38 $cleaner-brake Motortech 400g (Qty 2) 21.18 Filter-fuel In Line 80.85 Prostream Intake System Decarb 49.72 Intank Fuel System Cleaner 19.15 High Performance Battery 540cca 197.04 Drive Belt-Micro V At 41.44 Narva H1 P14.5s Globe 12v 55w 25.36 2217.87 GST 221.79
Subaru Mechanic: tech0405, Technician replied 6 months ago

Ok it seems like many items where done now did you have this issue before all this work was done ??

Ask Your Own Subaru Question
Customer reply replied 6 months ago
i was involved in a rear end collision. No mechanical issues 7 days after collision.
Sent car to panel beater came home with issues
Subaru Mechanic: tech0405, Technician replied 6 months ago

Did the panel beater do all this mechanical work also ??

Ask Your Own Subaru Question
Customer reply replied 6 months ago
No i had an independant mechanic do the work
Subaru Mechanic: tech0405, Technician replied 6 months ago

Ok heres what needs to be done you are either loosing fuel pressure or spark when driving especially since you have no codes in the system , you will need to have a fuel pressure tester tied into the fuel line this way you can drive and see fuel pressure to make sure its not dropping even if it had been checked and tested good you also need to have this done regarding spark to see if thats what your loosing you have to find out what your loosing spark or fuel either a issue with wiring to the fuel pump or possible tank sensor cutting out . I hope this helps please dont forget to provide feedback for the help provided thank you

Ask Your Own Subaru Question
Customer reply replied 6 months ago
how could i be losing spark with new spark plugs?
stalling occurs when i take my foot off the accelerator, not in the middle of driving
Subaru Mechanic: tech0405, Technician replied 6 months ago

Even if you have new spark plugs dont mean you can't be loosing spark at the time of the vehicle stalling out theres many things that can cause you too loose spark like faulty wiring , faulty ground signal , bad crank sensor cutting this is why you need to do the things i listed before to check what your loosing causing the stalling out issue

Ask Your Own Subaru Question
Customer reply replied 6 months ago
i need to check the fuel pressure while driving
Subaru Mechanic: tech0405, Technician replied 6 months ago

Correct you can attach a fuel pressure gauge to the fuel system and see if the fuel pressure drops when the car dies out

Ask Your Own Subaru Question
Customer reply replied 6 months ago
if that passes then what else could it be
Subaru Mechanic: tech0405, Technician replied 6 months ago

Like stated previously if thats good then check for spark the same way tied into the ignition system while driving you have to be loosing one or the other for the car to die out , please dont forget the feedback i will still help you after the feedback

Ask Your Own Subaru Question
Was this answer helpful?

How JustAnswer works

step-image
Describe your issueThe assistant will guide you
step-image
Chat 1:1 with a subaru mechanicLicensed Experts are available 24/7
step-image
100% satisfaction guaranteeGet all the answers you need
Ask tech0405 Your Own Question
tech0405
tech0405
tech0405, Technician
Category: Subaru
Satisfied Customers: 11,156
11,156 Satisfied Customers
Experience: Certified technican 14 years experience

tech0405 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

1,349 satisfied customers

ASE Master Tech 15 + Years

Tim Mohr

Tim Mohr

ASE MASTER TECH

418 satisfied customers

30 YRS EXPERIENCE, FOREIGN AND DOMESTIC, GAS AND DEISEL

Matt

Matt

Engineer

373 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

332 satisfied customers

16 years of experience

Ron Z.

Ron Z.

- Subaru Tech -

260 satisfied customers

18+yrs experience. State Inspector and Subaru Diagnostics

Don - Mo Lurch

Don - Mo Lurch

Subaru Mechanic

193 satisfied customers

Heavy Line Mech, Race Shop Owner, Mobile Electronics.

< Previous | Next >

Related Subaru Questions
What be a reason for a car to intermittently stall out and
Gary; what be a reason for a car to intermittently stall out and vibrate when either turning into a parking lot at a very slow speed or when stopping at a stop sign or red light? It also does this int… read more
Gary
Gary
Senior Technician
Vocational, Technical or Trade School
97 satisfied customers
I have a 2002 WRX that I'm having troubles with. First thing
Hey, I have a 2002 WRX that I'm having troubles with. First thing in the morning when it's cooler out, it will start up instantly. Almost strangely fast how quickly it starts. Once it's warm out or if… read more
Matt
Matt
Engineer
Bachelor's Degree
373 satisfied customers
I have 2009 Subaru Forester X (Body Style TK) (Class M) (Vin
I have 2009 Subaru Forester X (Body Style TK) (Class M) (Vin =JF2SH63689H706637), about 170,000 miles, bought it 2 years ago from a Subaru dealer, used, had about 165,000 miles.Problem 1) Last month I… read more
tamaz22
tamaz22
60 satisfied customers
2015 Forrester. Recently in an accident. beam headlights
2015 Forrester. Recently in an accident. Hi beam headlights don't work. Fuses and relays seem OK. I think the hi beam bulbs are used as the 'driving lamps' when not used as high beams. The driving lam… read more
Mark G
Mark G
Retired Toyota Technician
Auto Technology Degree
44 satisfied customers
Driving a Subaru Forrester AWD. Notice when slowing down and
Driving a Subaru Forrester AWD. Notice when slowing down and accelerating, rough shift in transmission. Problem occurs on irregular basis. Sometimes transmission shifts very smoothly, once in a while … read more
BOBBYSS
BOBBYSS
TECHNICIAN/ADVISOR
Associate Degree
8,343 satisfied customers
My 2009 only averages about 18 mpg thought maybe a fuel
My 2009 only averages about 18 mpg thought maybe a fuel filter change but it say only filter is in tank… read more
fordguy4u
fordguy4u
Automotive Tech
Vocational, Technical or Trade Scho
70 satisfied customers
Subaru Forester: 2010 Subaru Forster. last month or
2010 Subaru Forster. For the last month or so, the car has felt like it was going to stall out during idle. This seemed to only happen after driving it for a while. 2 weeks ago, after driving 20 minut… read more
tamaz22
tamaz22
60 satisfied customers
Subaru Legacy 2.5I Limited: My son has a 2009 Subaru Legacy
My son has a 2009 Subaru Legacy Ltd 2.5, AT with 68k that suddenly developed a loud engine knock, vibration, stalling, check engine light on. I brought it in to reliable shop who replaced the knock se… read more
eauto
eauto
self employed
High School or GED
74 satisfied customers
Subaru Impreza TS: Subaru Impreza 2004 TS. Used. Bought 6 months
Subaru Impreza 2004 TS. Used. Bought 6 months ago and ran like a champ. Two weeks ago was driving, lost power, rpm went to 0, parked to the side of the road. Since it's a manual I thought that I someh… read more
tamaz22
tamaz22
60 satisfied customers
2000 subaru forester: traffic..sputters..interior..catalytic converter
I have a 2000 Subaru Forrester... 155K miles when I slow in traffic and then resume speed, it sputters and looses power - the interior fan speed drops dramatically. I went to Jiffy Lube to have a new … read more
Dan
Dan
Automotive Technician
Vocational, Technical or Trade Scho
25 satisfied customers
2009 Outback: clunking..One time the AT Oil Temp light came
My 2009 Outback is experiencing a lound "clunking" noise from the rear. This seems to be associated with the transmission. One time the AT Oil Temp light came on, but that is not the norm. The problem… read more
BOBBYSS
BOBBYSS
TECHNICIAN/ADVISOR
Associate Degree
8,343 satisfied customers
2006 subaru outback: manual transmission..check engine..light comes
I have a 2006 subaru outback wagon manual transmission. There are 88K on it. I have had the car into the dealer multiple times because the check engine/cruise control light comes on. I drove about 100… read more
baddad1
baddad1
technician
High School or GED
5 satisfied customers
2004 subaru forester: cruise on the check engine light came..new plugs
Hi. I have a 2004 subaru forrester and got gas then after a bit, going uphill with cruise on the check engine light came on and then it started running really rough. Next day I changed oil, new air fi… read more
Al-Moderator
Al-Moderator
High School or GED
2004 Subaru Forester: 000 miles..revving..check engine light comes
2004 Subaru Forester, 156,000 miles. Several weeks problem with it stalling or revving when the engine is cold (Maine). When stalls, check engine light comes on fleetingly. Problem goes away after the… read more
wrxteck
wrxteck
factory certified master tech
High School or GED
31 satisfied customers
1990 subaru: blew..highway..slowed down..coolant in a white mist
My 1990 subaru has 146000 miles on it and blew a radiator plug a couple of weeks ago while I was on the highway. I slowed down and pulled over while it was still dispensing the coolant in a white mist… read more
ase_master327
ase_master327
Owner & Student
High School or GED
3,214 satisfied customers
2001 subaru forester: idles..runs fine..poor acceleration..gas pedal
My 2001 Subaru Forrester idles erractically and hesitates when cold. After 2-3 minutes as engine warms up, it runs fine. Has poor acceleration when cold and when flooring gas pedal, no response, then … read more
baddad1
baddad1
technician
High School or GED
5 satisfied customers
99 subaru forester: the check engine light goes on & off..scanned
i have a 99 subaru forrester. the check engine light goes on & off. i had it scanned & it came up with a code of po170. what does that mean & what should i do to fix it?… read more
baddad1
baddad1
technician
High School or GED
5 satisfied customers
Hesitation issues when accelerating..additive..injector cleaner
hello, having hesitation issues when accelerating from an intersection. over the past week added stp gas additive and, injector cleaner. also filled with premium gas. problem is a bit intermittent but… read more
Alan
Alan
Technician
High School or GED
262 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