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 Boxer54 Your Own Question

Boxer54
Boxer54, ASE Certified Technician
Category: Car
Satisfied Customers: 1684
Experience:  ASE certified master technician and L1 advanced ASE certification -over 15 years in automotive field
12613057
Type Your Car Question Here...
Boxer54 is online now
A new question is answered every 9 seconds

99 Rav4: AWD..cyl..110K, 4+ months ago, passed CA SMOG

Customer Question

Hello, ok, let's try.   ..... '99 Rav4 AWD 4 cyl, performance is now horrible; 110K, 4+ months ago, passed CA SMOG without adjustments needed (i.e. ass-u-me: timing belt is not the solution? :-)
currently 16.5 MPH vs original approx 23-24. Soluton? rebuild, purchase Japan 30K plus engine, diy 6 cyl swap out? (I might be dreaming :-)   Ok, your turn..... the ideal solution.... :-) Thanks!
Submitted: 5 years ago.
Category: Car
Expert:  Boxer54 replied 5 years ago.
Thank you for trusting Just Answer with your Toyota question. Ok, first thing here, do you have a check engine light on?
Customer: replied 5 years ago.
No, I ran a test with INNOVA 3130 about a month ago after the historical 3mo prior CA SMOG test NTF (no trouble found). So no 'check' engine, and no 'errors' reported by INNOVA 'scan'..... Hope this helps :-) and thank you..... cheers! Roger
Expert:  Boxer54 replied 5 years ago.
OK, so has the power been reducing gradually over time, or is this something you have noticed recently? You mentioned timing belt, has it been replaced? What about tuneup history, and with what brand of spark plugs? The 6 cylinder swap you mention is probably not feasible. Anything can be done with enough cash, but it will get real expensive once you factor in harnessess, computers, etc.....
Customer: replied 5 years ago.
Understood, good answers require good info., else garbage in/garbage out. So true.   I'd have to say that I've noticed the decreased performance over the past 18 months or so. One note, as to why I am inquiring... it's an OK vehical (sp), interior/exterior very good condition (my wife drove it :-). Now that I've inherited it, and it's just back/forth to work (about 9 miles each way @ 85-90 usually) I figure I might as well keep it going. All's I need, or will need, is some confidence that I can get another 6 years out of it.
Back to your question..... 1st mistake :-) I take care of it myself: oil every 4K, filter 8K, spark plugs 30K, don't recall which specific brand/detail of last replacement, but always end up paying the extra few bucks for 'highest' available quality. (Kragen) [not that I actually believe it, but, hey! who am I to 'contest' it without further research? :-)     Nothing ever goes wrong with it, it's a toyota. FAITH= My '90 camry, 4cyl, 225K when given to my brother. Drive CA > WI, still did 105 in Utah, always hit 90 without too much persuasion. Thus, my 'prejudice', in this case a positive "prejudice".     BTW, thanks for helping.... Sincerely, Roger
Expert:  Boxer54 replied 5 years ago.
alright, first thing here. For your Toyota to run best use only nippondenso, or NGK plugs. Nippondenso part number PK20TR11, NGK part number BKR6EKPB11 . 2 things come to mind here for the power. First is fuel pressure, but not likely if you don't see other problems. Most likely, if services have been done on time and there aren't any compression problems or anything like that, the engine is sound, so you have a deterioration with some computer input (a sensor). The most likely things are MAP sensor, and O2 sensors. However, the car should have a diagnostic scan to verify the operation of these sensors. The other thing to consider is to have a simple fuel system cleaning, where the throttle body and intake are cleaned. This can be an inexpensive fix if you are having excessive carbon buildup. Without doing some more diagnosis with this vehicle, I'm not sure how much more information I can give you.
Boxer54, ASE Certified Technician
Category: Car
Satisfied Customers: 1684
Experience: ASE certified master technician and L1 advanced ASE certification -over 15 years in automotive field
Boxer54 and 3 other Car Specialists are ready to help you
Expert:  Boxer54 replied 5 years ago.
If you need more help, you can log into this site and add to this post, or start a new one and ask for me in the question.

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
  • Excellent reply, and also very quick. Really sounds like the Expert knows what he is talking about. I will be back to use your service when I need more help with my RV. Dutch USA
 
 
 

Meet The Experts:

 
 
 
  • Chris (aka-Moose)

    Technician

    Satisfied Customers:

    846
    16 years of experience
< Last | Next >
  • http://ww2.justanswer.com/uploads/MU/muddyford/2012-6-13_1204_1.64x64.png Chris (aka-Moose)'s Avatar

    Chris (aka-Moose)

    Technician

    Satisfied Customers:

    846
    16 years of experience
  • http://ww2.justanswer.com/uploads/TE/TedG/2012-6-15_14759_avaLarge.64x64.jpg Ted G.'s Avatar

    Ted G.

    ASE Certified Technician

    Satisfied Customers:

    1596
    20 years auto repair experience, ASE Master Tech, Mechanical Failure consultant, Expert Witness
  • http://ww2.justanswer.com/uploads/joecamel90/2008-11-13_03615_head_shot.jpg George H.'s Avatar

    George H.

    ASE Certified Technician

    Satisfied Customers:

    1311
    ASE Master Tech 15+ yrs, AAS Automotive Technology, Factory trained Asian specialist
  • http://ww2.justanswer.com/uploads/AM/amedee/2013-10-24_23656_Amedee1.64x64.jpg Amedee's Avatar

    Amedee

    ASE Master Tech

    Satisfied Customers:

    2367
    ASE Master Tech advanced level specialist
  • http://ww2.justanswer.com/uploads/SU/supermechanic/2013-8-23_03546_500.64x64.jpg Jerry's Avatar

    Jerry

    Master Mechanic

    Satisfied Customers:

    1906
    ASE master, 30+ years. All makes and models. Trouble shooter, shop forman, service manager
  • http://ww2.justanswer.com/uploads/CR/crzydrvr00/2013-11-3_12123_246347.64x64.jpg Richard's Avatar

    Richard

    ASE Certified Technician

    Satisfied Customers:

    942
    12 years Ford Lincoln/Mercury Jaguar dealership as a technician and shop foreman reparing all makes
  • http://ww2.justanswer.com/uploads/ST/Steve7654/2012-6-5_215929_japic800x660.64x64.jpg Steve's Avatar

    Steve

    Auto Service Technician

    Satisfied Customers:

    1980
    25+ yrs experience as a professional working technician; ASE L1 master technician