How JustAnswer Works:

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

Ask jazzmaster Your Own Question

jazzmaster
jazzmaster, ASE Certified Technician
Category: Subaru
Satisfied Customers: 2321
Experience:  ASE CERTIFIED 32 YRS EXPERIENCE
8668911
Type Your Subaru Question Here...
jazzmaster is online now
A new question is answered every 9 seconds

1991 Subaru Legacy: Emissions..I look under the hood..intake manifold

Resolved Question:

I am getting the following code on my 1991 Subaru Legacy (non-turbo) 2.2L: 35 -- purge control solenoid valve... When I look at the diagrams in Chilton's and Haines of the Evaporative Emissions control system I see where the Purge Control Solemoid Valve is. But when I look under the hood and try tracing the lines from the charcoal cannister, I lose track just under the intake manifold and cannot find the Purge Control Solenoid Valve. Need help locating it so I can R&R it.

The problem is, when weather is especially cold, the engine surges up and and down and then stalls when first started. If I take my foot off the accelerator, it stalls. Usually this stops happening after the engine warms up to full operating temp (though I still get the surging at idle, just not the stalling). I have a parts car available and would like to swap the purge control solenoid valve and see if that resolves the issue. But need help locating it. How to find it, how to remove it.
Submitted: 4 years ago.
Category: Subaru
Expert:  jazzmaster replied 4 years ago.
hi ,the purge vale is actually the soleniod ,there are 2 wires going to it ,I will usually check the valve with a ground wire and a hot wire ,attach the ground wire to one of the terminals on the soleniod and then touch the other terminal with the hot ,it should click,do it a few times to make sure also
  • Disconnect and orally blow air through the vacuum hose; there should be no leaks.
  • Disconnect and orally blow air through the purge hose; there should be no leaks.
  • Disconnect the tank vapor hose from the fuel tank side. Orally blow air through the hose and check for unobstructed flow.
  • Visually check the canister exterior for cracks or other damage; replace if problems are detected this can cause the problems you are having if itis indeed stuck open,you will have to remove the intake manifold to get to this ,also it could just be a cracked or broken vacuum hose that is causing the surging and stalling so look closely at the vacuum hoses under the intake and to the throttle body here is a diagram of where it is and it shows you what it looks like ,graphic
  • Customer: replied 4 years ago.
    Thank you, XXXXX XXXXX helps.

    So, do I understand that to access the solenoid, I need to remove the intake manifold?

    And I'm not understanding about how to do the two "blow" tests. Do I disconnect the hoses at the charcoal cannister and blow through them?

    If so, what should happen when I blow? Should I feel resistance? Should I feel a free flow? How would I know, from blowing, if there is a leak?

    I did visually inspect the cannister and hoses today, but obviously, could not see what was going on under the manifold. Sounds like I may need to pull that.

    Also, I did not carefully follow all the other vacuum hoses and check them for cracks, only the lines connected to the cannister. Do I need to check ALL vacuum hoses?

    Thanks,
    kwc
    Customer: replied 4 years ago.
    Thank you, XXXXX XXXXX helps.

    So, do I understand that to access the solenoid, I need to remove the intake manifold?

    And I'm not understanding about how to do the two "blow" tests. Do I disconnect the hoses at the charcoal cannister and blow through them?

    If so, what should happen when I blow? Should I feel resistance? Should I feel a free flow? How would I know, from blowing, if there is a leak?

    I did visually inspect the cannister and hoses today, but obviously, could not see what was going on under the manifold. Sounds like I may need to pull that.

    Also, I did not carefully follow all the other vacuum hoses and check them for cracks, only the lines connected to the cannister. Do I need to check ALL vacuum hoses?

    Also, to test the solenoid itself as you described, do you remove the intake manifold? Or are you able to reach it with probes?

    Thanks,
    kwc
    Expert:  jazzmaster replied 4 years ago.
    it may be possible to reach with probes look behind the intake and see if you can acess the solenoid there ,you might have to take a few things out of the way, .but I would definately look for bad vacuum hoses first that seems to be the problem,but if you do have to remove the solenoid you have to blow through the fittings right on the valve and it should be closed and you should not be able to blow air through either side that the hoses go to ,also it might be possible to not have to remove the intake with the right swivels and extensions, you will just have to look and see ,and yes check all the vacuum lines and hoses ,I am pretty sure you will find a bad or cracked hose and that would make your life easier lol I know it does mine when I can take a few shortcuts to get a job done ,let me know what you find please ...guy...
    jazzmaster, ASE Certified Technician
    Category: Subaru
    Satisfied Customers: 2321
    Experience: ASE CERTIFIED 32 YRS EXPERIENCE
    jazzmaster and 2 other Subaru Specialists are ready to help you

    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 P Elm City, NC
    < Last | Next >
    • 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 P Elm 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. Phil Marysville, 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. Charles Walnut 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!
      Sue Charleston, 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. Jim Castleberry, 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
     
     
     

    Meet The Experts:

     
     
     
    • Kevin C.

      Subaru Master Tech.

      Satisfied Customers:

      1720
      34 years of Subaru service experience, ASE Master Technician.
    < Last | Next >
    • http://ww2.justanswer.com/uploads/SU/Subaruwiz/2012-5-24_23311_Picture1.64x64.jpg Kevin C.'s Avatar

      Kevin C.

      Subaru Master Tech.

      Satisfied Customers:

      1720
      34 years of Subaru service experience, ASE Master Technician.
    • http://ww2.justanswer.com/uploads/joecamel90/2008-11-13_03615_head_shot.jpg George H.'s Avatar

      George H.

      Subaru Certified Technician

      Satisfied Customers:

      959
      ASE Master Tech 15 + Years
    • http://ww2.justanswer.com/uploads/TA/tamaz22/2012-9-29_142316_IMG0722.64x64.JPG tamaz22's Avatar

      tamaz22

      ASE Certified

      Satisfied Customers:

      363
      Subaru certified,ase certified,20years experience
    • http://ww2.justanswer.com/uploads/tsmodie/2009-6-10_144056_tim.jpg Tim Mohr's Avatar

      Tim Mohr

      ASE MASTER TECH

      Satisfied Customers:

      333
      30 YRS EXPERIENCE, FOREIGN AND DOMESTIC, GAS AND DEISEL
    • http://ww2.justanswer.com/uploads/35/350matt/2012-6-7_182356_matsavatr.64x64.jpg Matt's Avatar

      Matt

      Engineer

      Satisfied Customers:

      212
      Mechanical Engineer with 20 years experience in the auto industry, 8 yrs in formula 1 engine testing
    • http://ww2.justanswer.com/uploads/JA/JACUSTOMERcvb4xdcm/2011-2-8_22633_toddstechline2.64x64.jpg Canuck Tech's Avatar

      Canuck Tech

      Automotive Service Technician

      Satisfied Customers:

      170
      Trainer
    • http://ww2.justanswer.com/uploads/2P/2paulm/2012-4-4_183431_justabswer.64x64.jpg Paul M ASE Master's Avatar

      Paul M ASE Master

      ASE Master Tech

      Satisfied Customers:

      161
      ASE Master Tech 20+ Years