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 Mazda Ed Your Own Question

Mazda Ed
Mazda Ed, Auto Service Technician
Category: Car
Satisfied Customers: 2223
Experience:  ASE Master Technician, Mazda Master Technician, GM and Ford factory trained. 15 years experience!
Type Your Car Question Here...
Mazda Ed is online now
A new question is answered every 9 seconds

2000 Mazda MPV: blows..same fuse..Mechanics..wiring

Customer Question

On my 2000 Mazda MPV it blows a fuse, you replace the fuse then try to start it back up again and it will continually blow the same fuse again. Mechanics cannot seem to locate short in wiring? after 3 weeks? Can you help?
Submitted: 6 years ago.
Category: Car
Expert:  Mazda Ed replied 6 years ago.

HiCustomer

What fuse is being replaced?

Mileage?

Recent repairs before the problem started happening?

Customer: replied 6 years ago.
No recent repairs made.
Mileage 106,372
Fuse - am waiting for mechanic to call me back with this info.
Expert:  Mazda Ed replied 6 years ago.
Ok, as soon as you have the fuse information let me know. I can go through the schematic and let you know what to test.
Customer: replied 6 years ago.
I am on a dial-up modem so I may get kicked off. If I do I'll try to make connection with you again.
Expert:  Mazda Ed replied 6 years ago.
It's ok, I can type to you whether you are online or not. You will see my message as soon as you log on to your question.
Customer: replied 6 years ago.
The fuse is a 10 amp mini engine fuse
Expert:  Mazda Ed replied 6 years ago.
The fuse is the control for the "Main Relay" and the power for the heated oxygen sensors and the capacitor mounted near the ignition coils. Personally, I would start by disconnecting ALL of the oxygen sensors and checking the wires for shorts. You could also disconnect the capacitor. If it blows the fuse as soon as you turn on the key you should be able to isolate a bad sensor very easily. Don't forget to also unplug the main relay and see if the fuse stops blowing. With the main relay unplugged the vehicle will not start.
Mazda Ed, Auto Service Technician
Category: Car
Satisfied Customers: 2223
Experience: ASE Master Technician, Mazda Master Technician, GM and Ford factory trained. 15 years experience!
Mazda Ed and 15 other Car Specialists are ready to help you
Customer: replied 6 years ago.
My mechanic has already done all this. He now is taking the shroud from around the wiring harness which his tester is "pinging" to be inside that. Thanks for all your help though.
Expert:  Mazda Ed replied 6 years ago.

I didn't realize that since you only stated that fuses had been changed to repair the problem. Make sure he disconnected all of the sensors, the capacitor and the relay or he will get a faulty reading.

Customer: replied 6 years ago.
It is 740pm my time and the mechanic has gone for the day. I will be back in touch with him in the morning and let him know what you have said. Also, the deposit I put up has already cleared my bank, so I thought that was that??? I will check with him again in the morning to make sure he did disconnect all the sensors, capacitors and relay though. I really appreciate you.
Expert:  Mazda Ed replied 6 years ago.

I'm not sure what you mean about the deposit?? Your deposit stays in your JustAnswer account until you accept or ask for a refund. As of now, it is still your money to do with as you please.

Please let me know if you need more help. I hate to see any vehicle broken down, especially a Mazda!

Customer: replied 6 years ago.
My mechanic looked inside the wiring harness & it had 3 broken wires just behind the firewall. Thanks for your input though.
Expert:  Mazda Ed replied 6 years ago.
Thanks for the accept. I'm glad we got it figured out. I'm not sure why it took the mechanic so long. Day one should have involved removing the items from the circuit, verifying the short was still there and then finding the wires that were shorted!

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
  • The nearest Volvo dealer is 160 miles away. Best $15 bucks I have spent in a long time! Paul M Corpus Christi, TX
 
 
 

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