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 Dr. Hamman Your Own Question

Dr. Hamman
Dr. Hamman, Automotive Engineer
Category: Car
Satisfied Customers: 5779
Experience:  30 years experience, Repairing, building, & designing, automobiles.
Type Your Car Question Here...
Dr. Hamman is online now
A new question is answered every 9 seconds

WildFire Motors WF I have a new electric car with 6 new replaced

Customer Question

I have a new electric car with 6 new replaced batteries but being fully charged I will be driving down the street and it will suddenly just quit and the gauge will show it is still charged to the top , I have to turn the power off and restart the car and go again what is my problem ?Also the transmission is full of oil and I ran the alcerator in my driveway and it motor stopped without driving the car, when your web sight ask to verify my e-mail there is no place to submit
Submitted: 3 years ago.
Category: Car
Expert:  Dr. Hamman replied 3 years ago.

Dr. Hamman :

Hi, I will do my best to assist you. When you are finished please click on accept. I don't get paid unless you do. I don't know if you are a pro or a novice so we may have to fine tune the answer. I only know as much about your problem as you have told me in your post, so my answer will be based on what you have posted. Feel free to add any additional info you feel is needed.


There are a few possibility's. I want to be right up front and tell you that tests will have to be performed to determined what the exact problem is. Some of these parts are real expensive, and you wont want to change them out unless they are bad, testing is key to not replacing lots of good parts. The system has a sensor attaches to the "Gas" pedal, yeah I know it is electric, but the term transcends the gas electric issue, LOL ...it is still commonly used on EV's (Electric Vehicles). So you have the gas pedal sensor, and the ESC (Electronic Speed Controller) and the motor. Of course the battery pack feeds into the speed controller, and other components in the system. These are the most common failure items that cause issues like you are having. Because the batteries were just replaced, and battery pack reads good when the problem happens we can assume the batteries are fine. The gas pedal sensor is the problem many times when you have this problem, so it should be checked first. If your model has safety interlocks on it they should be checked. Some models will not let you drive unless it senses someone sitting in the drivers seat, so any interlocks should be checked. The next thing to check is ESC, if it has input from the gas pedal sensor, and no interlocks are shutting it down, then the ESC should be sending power to the motor, and the VE should drive. Normally problems like you have are the ESC, the gas pedal sensor, or interlocks. There are other possibilities to because it is a complex system. If you are going to work on it yourself I highly recommend that you get a repair manual from the manufacturer. The electrical schematic in the manual will show you if it has interlocks, and identify which wires perform the different functions. From there you will need at least a good quality DVM (digital Volt Meter) or a VOM (Volt Ohm Meter) so that you can inspect the parts and their function. If you have any more questions I am here to help. Good luck, and Thanks for using Just Answer.


I hope this helps, 100% satisfaction is my goal. If the answer is not clear, please reply and I will assist you more. When you're satisfied, click on accept. I don't get paid unless you do. A bonus and positive feedback are always appreciated, good luck and Thanks.


Customer :

I will call the rep from WildFire Motors with this info and see what he can do for me since the motor and transmisson is under war. for 2 years and or 24,000 miles , I only have 680 miles on the car

Dr. Hamman :

That would be a good approach. Most of the Wildfire cars use AC motors, speed controller/inverters to turn the DC from the batteries into AC. AC systems are a bit more complex than the DC motors commonly used in other EV's BotXXXXX XXXXXne is that makes them more complex to service . The up side is the AC system if so equipped is a much more efficient drive system, than a DC system. If you have any more questions I am here to help. Good luck, and Thanks for using Just Answer.


I hope this helps, 100% satisfaction is my goal. If the answer is not clear, please reply and I will assist you more. When you're satisfied, click on accept. I don't get paid unless you do. A bonus and positive feedback are always appreciated, good luck and Thanks.

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