Subaru

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

Ask an Expert,
Get an Answer ASAP!

2002 Subaru Outback, 4 cyl. 281,000 miles. New spark plugs,

Customer Question
(this happened before changing plugs)...
2002 Subaru Outback, 4 cyl. 281,000 miles. New spark plugs, (this happened before changing plugs), new air filter, fairly new gas filter. On occasion, after I have driven the car for a while and it is at normal temperature, and then I stop and park the car for a short duration, like 10-15 minutes, the car will crank but not start. If I let it set for 10-20 minutes it will start right up.
Submitted: 1 year ago.Category: Subaru
Show More
Show Less
Ask Your Own Subaru Question
Answered in 1 hour by:
8/14/2016
Subaru Mechanic: Matt, Engineer replied 1 year ago
Matt
Matt, Engineer
Category: Subaru
Satisfied Customers: 23,313
Experience: Mechanical Engineer with 20 years experience in the auto industry, 8 yrs in formula 1 engine testing
Verified

Hello

This could be a wiring issue as things tend to expand when hot and its possible a poor or partial electrical connection is being pushed apart on one of the major sensors so check the connection plug and wiring to the following;

Airflow meter

Crank position sensor

Cam position sensor

O2 sensor

Throttle position sensor

unplug each in turn and use some switch / contact cleaner spray on the pins to ensure its all grease / dirt free

Also worth checking the connections to the fuel pump for the same reason - unplug each in turn and give them a good squirt of switch / contact cleaner - Not WD40

and also unplug and inspect the main power relays and fuses for signs of overheating or corroded terminals - so the ones for the ECU and the fuel pump

And also unplug the wiring loom connections in the engine bay one at time and inspect for corroded or recessed pins.

Ask Your Own Subaru Question
Subaru 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 and this is held by the site until you rate my answer at which point the cash is split between the site and the expert. I am only paid for my work on this question if you rate my answer, using the star system at the top of the screen. Please do not forget! Thank you

Ask Your Own Subaru Question
Customer reply replied 1 year ago
I'm having a tough time rating you. Your answer was probably technically correct, but I really had no way to apply what you suggested. First I couldn't figure out which connections were the ones you were referring to, even having looked up a wiring schematic. The connections I could reach all seemed well seated, but most I was unwilling to risk detaching because they were near impossible to get my hands on, in particular the gas pump coupling, unless I could put the car on a stand or removed parts of the car to reach it. So, I really had no way to confirm the efficacy of your suggestions.In addition, the whole way this getting an answer system is screwy. I was charged $5 at the start, when I was supposed to pay only when I was satisfied - and I am ambivalent about that. I couldn't see your answer until I paid, and when I tried to pay it kept giving me an error message and that the payment could not go through. But my card is showing payment, though you are now saying yo do't get paid unless I rate you. And there seems to be no method of redress.Listen, I appreciate that this is income for you and you are probably good at it. But the mechanics of this system completely turned me off and will result in my never using it again.
Subaru Mechanic: Matt, Engineer replied 1 year ago

Sorry to hear that the system didn't work out for you

probably best to request a refund

http://ww2.justanswer.com/help/how-can-i-request-refund-0

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 Matt Your Own Question
Matt
Matt
Matt, Engineer
Category: Subaru
Satisfied Customers: 23,313
23,313 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:

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

23,313 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
Failed 2nd oil consumption test on my 2014 Subaru Outback
Second opinion] failed 2nd oil consumption test on my 2014 Subaru Outback 2.5L Limited CVT model. Dealer getting approval from Subaru to replace short block assembly for free due to lawsuit from a few… read more
George H.
George H.
Subaru Certified Technician
Associate Degree
1,349 satisfied customers
This is about a 2001 Subaru Outback. The AT temperature
Hi. This is about a 2001 Subaru Outback. The AT temperature light starts flashing after I drive, say, 15 to 20 miles. I looked the situation up on the internet and found a procedure called the "secret… read more
baddad1
baddad1
technician
High School or GED
5 satisfied customers
I have a 99 outback that was partially flooded and ran fine
I have a 99 outback that was partially flooded and ran fine when parked but now after being flooded it cranks but I'm not getting a spark from the coil, i know this because i pulled a plug and checked… read more
HondaPlatinum
HondaPlatinum
High School or GED
148 satisfied customers
i have a97 subaru outback automatic it has recently started
i have a97 subaru outback automatic it has recently started to stutter and stall at the most inconvenient of places but restarts then stops again its had a new oxygen sensor 2 yrs ago new plugs fuel f… read more
tamaz22
tamaz22
60 satisfied customers
Subaru Outback 2.5I: I have a 2008 Subaru Outback with 118K
I have a 2008 Subaru Outback with 118K miles. Just replaced the cat. converter. Now my car surges when I come to a stop and also when going down the road. Does not happen when the AC is turned off.… read more
baddad1
baddad1
technician
High School or GED
5 satisfied customers
subaru outback: have a 97 subaru outback my wife drove 2 hr
have a 97 subaru outback my wife drove 2 hr to pick me up after picking me up the car lost ability to rev up so i when to a parts house to look at it decide to change fuel filter for fun acted normal … read more
Pete
Pete
Independent Auto Technician
Vocational, Technical or Trade Scho
138 satisfied customers
Subaru Impreza Outback Sport: I have a 2005 Subaru impreza
I have a 2005 Subaru impreza outback sport. about once a week it takes a spell where every time you slow down for a light or to make a turn onto another road it cuts off and just cranks and cranks. so… read more
baddad1
baddad1
technician
High School or GED
5 satisfied customers
Subaru Outback: my 2002 Subaru outback will start and idle
my 2002 Subaru outback will start and idle strong for 10 seconds then die. I replaced the fuel pump, wires, plugs, coil pack, but still have the same problem., the OBD gives me 4 codes (p0302 & p0304)… read more
Chris(aka-Moose)
Chris(aka-Moose)
Subaru Technician
Vocational, Technical or Trade School
332 satisfied customers
Subaru Legacy: My 1994 Subaru Legacy automatic will go into
My 1994 Subaru Legacy automatic will go into gear immediately after not having been driven for a while (say, an hour). But if I park it, turn it off, then come back and restart the car after only a sh… read more
Chris(aka-Moose)
Chris(aka-Moose)
Subaru Technician
Vocational, Technical or Trade School
332 satisfied customers
I have a Subaru Outback Limited 3.6. When started in morning
I have a Subaru Outback Limited 3.6. When started in morning after sitting overnight the RPM goes up 2000. I put into reverse to reduce RPM. After about 5 - 10 minutes of driving RPM is at 900 to 1000… read more
baddad1
baddad1
technician
High School or GED
5 satisfied customers
Subaru Impreza: I have a 95 Subaru impreza, for about two months
I have a 95 Subaru impreza, for about two months if I made short trips (gas station, grocery store) my car wouldn't start for 15-20 mins. Then it would start right up. However now it does start at all… read more
tamaz22
tamaz22
60 satisfied customers
2002 Subaru Outback: dealership..Check Engine Light..idling..stalled
Hi I have just purchased a 2002 Subaru Outback that had a few problems that were repaired under the dealership warranty. One of the problems was a Check Engine Light caused by moments of very low idli… read more
eauto
eauto
self employed
High School or GED
74 satisfied customers
2005 subaru outback: night--its on the odometer display--er i/u
on my 2005 subaru outback i just got this message after my son left the radio on all night--its on the odometer display--er i/u… read more
baddad1
baddad1
technician
High School or GED
5 satisfied customers
Subaru Outback 2.5I Limited i changed the spark plugs on my
i changed the spark plugs on my subaru outback 4 cilender no a trobo little oil around the plugs all 4 but have not changed them in 160000 miles (it needed them runs grate) just worried about the oil,… read more
baddad1
baddad1
technician
High School or GED
5 satisfied customers
2002 subaru outback: buck..its driven in 92 degree
Our 2002 subaru outback starts to buck when it's driven in 92 degree or higher temperatures in dry heat. We've experienced this since around 2007 and no mechanic has fixed it. Subaru insists nothing i… read more
baddad1
baddad1
technician
High School or GED
5 satisfied customers
1998 Subaru Legacy Outback: 2.5L..bag pipes..automatic..light comes
1998 Subaru Outback 2.5L Manual 5-speed Bought my 1998 Subaru Legacy Outback as a second hand vehicle. From almost day one, after turning off the motor a long eerie sound, like air escaping bag pipes … read more
baddad1
baddad1
technician
High School or GED
5 satisfied customers
2008 Subaru Outback: recently bought..gas mileage..ecu..disconnecting
I recently bought a 2008 Subaru Outback with a 2.5 with the PREV(polution option). The gas mileage seems to be way off from the previous Subaru I owned w/o this option. Someone suggested resetting the… read more
Kevin C.
Kevin C.
Subaru Master Tech.
High School or GED
1,727 satisfied customers
subaru outback: front (engine block area..driven..20 minutes..quart
My subaru outback is occationally smaoking from the engine area. In the past month the car has begun smaoking from the front (engine block area?)after being driven about 20 minutes. Each time I have a… read more
BOBBYSS
BOBBYSS
TECHNICIAN/ADVISOR
Associate Degree
8,343 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