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 john -aka eauto Your Own Question

john -aka eauto
john -aka eauto, The Car Guy
Category: Lexus
Satisfied Customers: 12953
Experience:  15 years as a auto tech Ase Certified
6149662
Type Your Lexus Question Here...
john -aka eauto is online now
A new question is answered every 9 seconds

Lexus GS300: 98 Lexus GS300 with error code P1349 VVT System

Resolved Question:

98 Lexus GS300 with error code P1349 VVT System Malfunction Bank 1. Runs great for about 30 minutes and than misses and runs rough at idle for about a minute. Then perfectly fine after that. Misses idle a various times after that. I cleaned the filter on the oil control valve and it seem to be working. Should I replace the OCV or are there other things to check?
Submitted: 2 years ago.
Category: Lexus
Expert:  john -aka eauto replied 2 years ago.
Hi . Thank you for asking your question on JustAnswer.
Any time you have this P1349 code it means that there is a mechanical issue in the VVTI system. Typically this means that the oil control valve is either sticking mechanically or the actuator on the camshaft is sticking mechanically. The computer determines this by sending a command signal to the OCV or oil control valve to advance or retard the actuator on the end of the camshaft. It monitors this by monitoring the camshaft position sensor and crankshaft position sensor. When it does not see the proper timing fluctuation it flags this code. The P 1346 code means that the computer somewhere along the line saw timing deviation between the camshaft position sensor and the crankshaft position sensor.Generally this means that the timing belt is out of time. In some few cases we have seen where the protrusions on the crankshaft drive gear that send the signal through the crankshaft position sensor become chipped or nicked. This will cause an erratic pattern to be sent to the computer and can cause issues in the VVTI system

Thank you again for trusting us with your problem. John aka eauto
john -aka eauto, The Car Guy
Category: Lexus
Satisfied Customers: 12953
Experience: 15 years as a auto tech Ase Certified
john -aka eauto and 3 other Lexus Specialists are ready to help you
Customer: replied 2 years ago.

I did not get a P1346 code, just a P1349. If the timing belt is off would it only miss every 30 minutes for a few seconds? Can I check the crankshaft drive gear and if so how? What can I do to eliminate some of the possible causes? Thanks

Expert:  john -aka eauto replied 2 years ago.
In most cases the vvt oil control valve will need to be replaced. You will also need to check the intake cam gear to make sure it is not leaking
Customer: replied 2 years ago.

Thanks, XXXXX XXXXX the intake cam gear and how can I check it? I'll replace the oil control valve.

Expert:  john -aka eauto replied 2 years ago.
kits the gear at the end of the camshafts

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:

 
 
 
  • THANK YOU, THANK YOU, THANK YOU!! I've got my baby back. Tomorrow I will get a tank of high octane, remove the top, go for a long long ride and enjoy my car. THANK YOU! Jughead USA
< Last | Next >
  • THANK YOU, THANK YOU, THANK YOU!! I've got my baby back. Tomorrow I will get a tank of high octane, remove the top, go for a long long ride and enjoy my car. THANK YOU! Jughead USA
  • 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
  • This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!! Alex Los Angeles, CA
  • Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult. GP Hesperia, CA
  • I couldn't be more satisfied! This is the site I will always come to when I need a second opinion. Justin Kernersville, NC
  • Just let me say that this encounter has been entirely professional and most helpful. I liked that I could ask additional questions and get answered in a very short turn around. Esther Woodstock, NY
  • Thank you so much for taking your time and knowledge to support my concerns. Not only did you answer my questions, you even took it a step further with replying with more pertinent information I needed to know. Robin Elkton, Maryland
 
 
 

Meet The Experts:

 
 
 
  • lexpert

    Lexus Master tech

    Satisfied Customers:

    2100
    Master Certified with lexus, 8 years experience with Lexus
< Last | Next >
  • http://ww2.justanswer.com/uploads/LE/lexpert/2012-6-14_21259_Ja2.64x64.jpg lexpert's Avatar

    lexpert

    Lexus Master tech

    Satisfied Customers:

    2100
    Master Certified with lexus, 8 years experience with Lexus
  • http://ww2.justanswer.com/uploads/SK/skyvisions/2012-6-9_23736_JACropped3.64x64.jpg Skyvisions's Avatar

    Skyvisions

    ASE Certified Technician

    Satisfied Customers:

    1329
    Lexus Expert
  • http://ww2.justanswer.com/uploads/DR/drivefast1971/2012-1-12_172422_0009051tQKh.64x64.jpg Ron Z.'s Avatar

    Ron Z.

    - Lexus Tech -

    Satisfied Customers:

    250
    18+yrs experience. State Inspector and Lexus Diagnostics
  • http://ww2.justanswer.com/uploads/AM/amdhcds/2012-4-1_04039_3911361015044607312849462040349387767831419345287n.64x64.jpg AMD's Avatar

    AMD

    Master Technician

    Satisfied Customers:

    229
    L1 Advanced Level Diagnostics Specialist
  • http://ww2.justanswer.com/uploads/joecamel90/2008-11-13_03615_head_shot.jpg George H.'s Avatar

    George H.

    ASE Certified Technician

    Satisfied Customers:

    164
    15+ years ASE Master w/L1 Drivability certification
  • http://ww2.justanswer.com/uploads/CA/caprio23/2011-12-13_155550_20111213105344.64x64.jpg Anthony's Avatar

    Anthony

    ASE Certified Technician

    Satisfied Customers:

    117
    ASE Master Automobile Technician with over 20 years exp. in this field.
  • http://ww2.justanswer.com/uploads/RO/rodcuda/2011-7-25_224114_Donhoff1.64x64.JPG Neal's Avatar

    Neal

    Mechanic

    Satisfied Customers:

    114
    Shop owner experienced in most brands.