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 RV SPECIALIST Your Own Question

RV SPECIALIST
RV SPECIALIST, RV Mechanic/Diesel Mechanic
Category: RV
Satisfied Customers: 303
Experience:  22 years Diesel/RV,major engine, Chassis, Appliances, 14 Years Owner of successful Rv service center
17629946
Type Your RV Question Here...
RV SPECIALIST is online now
A new question is answered every 9 seconds

My RV Onan 4000 generator does not start when the start button

Resolved Question:

My RV Onan 4000 generator does not start when the start button is pushed and held. There is a clicking sound coming from a small round device that the power in connected to. Is that some sort of charging coil, and could that be the problem my generator has?
Thanks!
Submitted: 3 years ago.
Category: RV
Expert:  RV SPECIALIST replied 3 years ago.
lets check the battery voltage at the solonoid it sounds like a bad connection or a dead or bad battery let me know i am here to help greg dinsmore
Customer: replied 3 years ago.
<p>The deep cycle batteries are new and are showing a decent charge.</p><p>Could it be a bad solenoid on the generator?</p>
Expert:  RV SPECIALIST replied 3 years ago.
could be but the clocking is a sure sign of low voltage when you hold it down it just clicks really fast ?have you had any of the controls apart? lets try a battery jump box on the positive side and ground it .if it clicks real fast
Customer: replied 3 years ago.

The solenoid makes a single click when I push and hold the start button. It doesn't continuously click really fast - just the one click sound. I'll check the voltage from the batteries again once I get home from work today.

Expert:  RV SPECIALIST replied 3 years ago.
ok try and locate a jump box also cause you could have good voltage but no amps so as you hold down the switch check the voltage.and check it on both sides lets see if its getting through the solonoid .if its getting through the solonoid what you could have is a bad spot in the starter and sometimes you can take a long pry bar and look inside to the back of the gen set in the middle you will see the starter have some one hold the starter button and tap on the starter at the same time (do not hit it to hard as you will break the magnets inside it )i will check back in on you tonight thanks greg
Customer: replied 3 years ago.
Last night I started to check the solenoid, but when the start button was held for more than a few seconds a burning smell and a little smoke started to come from what appeared to be the starter. So I stopped there. I think it might be a bad starter, do you agree?
Expert:  OnanMan replied 3 years ago.
Hi, I am Don. (Edited by Moderator) May I get the model number from the data tag? I think I already know but I want to know for sure. Thanks.

Edited by Maria-Moderator on 11/5/2010 at 12:27 AM EST
Customer: replied 3 years ago.

I will need to get the model number off of the data tag when I get home from work. I will provide you with that info tomorrow. Thanks!

Expert:  OnanMan replied 3 years ago.
OK, the series I am thinking is a microlite. Does that sound right?
Expert:  RV SPECIALIST replied 3 years ago.
yes its a 4.0 its basic 12 volt operation and most gas models have the same starting system and sounds as if though my diag was correct (Edited by Moderator)

Edited by Maria-Moderator on 11/5/2010 at 12:29 AM EST
Expert:  RV SPECIALIST replied 3 years ago.

and yes don the starter is failed but would need tested to properly diagnose. i would drop the gen set and remove the top cover and remove the starter and make sure the engine moves freely, and if so the starter is bad. these starters are fairly cheap. i will get you a part number for your onan i hate to have you keep running back and forth so i will need a serial number to get you your part number. thanks don, (Edited by Moderator) I usually check my messages hourly up to 10 pm at night even sundays-- because i pride myself customer service and going above and beyond for them with multiple fields of knowledge--Greg



Edited by Maria-Moderator on 11/5/2010 at 12:30 AM EST
RV SPECIALIST, RV Mechanic/Diesel Mechanic
Category: RV
Satisfied Customers: 303
Experience: 22 years Diesel/RV,major engine, Chassis, Appliances, 14 Years Owner of successful Rv service center
RV SPECIALIST and 3 other RV Specialists are ready to help you
Expert:  RV SPECIALIST replied 3 years ago.
JUST CHECKING IN ON YOU
Customer: replied 3 years ago.

Thanks for all your help. Here's the info on the Onan generator:

 

Model #4KYFA26100F

S/N J963592569

Amps = 33.3

RPM = 3600

Battery = 12v

 

I tried starting the generator last night with the batteries fully charged, and I'm still getting the same result = the solenoid clicks when the start button is pushed and held, but the starter does not respond. If I try starting or hold button too much there appears to be a electical burning smell along with slight smoke coming from the back near the starter.

 

I appreciate your advice and apologize for having you have to reply so many times to me. I will await your next and final bit of advice, and then will "Accept Answer" afterwards.

 

Thanks again!

Expert:  RV SPECIALIST replied 3 years ago.

thanks and we are dealing with that in the backgroundWink

 

ok back to your deal-I do have strong feelings that your unit has a bad starter .but if you can tap on the starter sometimes the unit will get past the bad spot. or you can remove the top cover i hate to have you drop the unit(not fun)but need to get the cover off to access the starter i will get your part number when i get to the shop, so you can have the starter with you when you get the gen set down.

one thing you can also check is reach your hand in the left side of the gen set and grab the cooling fins and turn the engine- just to make sure the engine is not locked up (make sure the battery is disconnected so it does not accidentally engage)

 

thanks and again i am sorry for the confusion greg dinsmore

Customer: replied 3 years ago.
Thank you again for your help. I've tapped on the starter as best as I could, and it did not help. I will check to see if the cooling fins rotate before assuming it's the starter and ordering a new one. If you are able to get me a p/n for the starter, and maybe a name of a reliable supplier that would be great. Thanks again!
Expert:  RV SPECIALIST replied 3 years ago.
GREAT HERES THE PART NUMBER(NNN) NNN-NNNNPRICE 80.16 WinkAND I FOUND IT AT A ONAN OR CUMMINS (AS CUMMINS OWNS ONAN)210-655-5420 AND IT WAS GREAT DEALING WITH YOU AND HOPE YOU RETURN BACK TO JUST ANSWERSSmile AS WE HAVE A LOT OF REALLY GOOD TECHS Smile GREG
Customer: replied 3 years ago.

Greg,

Thanks again for your help last week. When I got home Friday, I did what you suggested and turned the cooling fan blades. It felt like it was locked up at first and they didn't want to rotate, but I was able to force them loose by hand and then the generator started up fine. It ran well all weekend on our trip.

I'm not sure what would cause the engine to lock up like that, I'm sure you'd have a suggestion on what it might be, or maybe that is a normal occurance? If you'd like to advice on what might cause that problem feel free to, however I do not expect you to since you've already spent much time in helping me.


Thanks again!

Expert:  RV SPECIALIST replied 3 years ago.

no problem thats what we do here is to make sure you are happy and come back Winkthat is not standard to happen all though the starter has a plastic gear drive and sometimes the drive gets stuck in between teeth of the flywheel

how long had it sat before you attempted to start it ?does the starter sound ok ? let me greg

Customer: replied 3 years ago.

I've started it recently. It had not sat idle for any length of time. The starter sounds good. Perhaps it was the position of the teeth to the flywheel??

Thanks again!

Expert:  RV SPECIALIST replied 3 years ago.
yes could be i would get one just in case these starters are not very good to begin with and seam to know when you need it the most lol have a great day

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:

 
 
 
  • 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
< Last | Next >
  • 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
  • Highly recommend this RV expert. Prompt, good and detailed answers were given. Very willing to help with genuine concern. I will ask for him next time. Jack USA
  • 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
 
 
 

Meet The Experts:

 
 
 
  • gene

    RV Mechanic

    Satisfied Customers:

    1100
    28 yrs exp in the industry
< Last | Next >
  • http://ww2.justanswer.com/uploads/barcoded06/2009-06-08_030842_gene.jpg gene's Avatar

    gene

    RV Mechanic

    Satisfied Customers:

    1100
    28 yrs exp in the industry
  • http://ww2.justanswer.com/uploads/unclebobsuncle/2009-02-19_010056_jaubu.jpg Nick's Avatar

    Nick

    RVIA Certification

    Satisfied Customers:

    655
    5 years RV repair and reconstruction, Fleetwood RV Training course completion.
  • http://ww2.justanswer.com/uploads/PR/PrimoTenora/2012-7-31_03315_Disneycool.64x64.JPG Steve F.'s Avatar

    Steve F.

    RVIA Certification

    Satisfied Customers:

    441
    Journeyman and Master RV technician, Mechanical & Aerospace Engineer. RVIA Technical Consultant
  • http://ww2.justanswer.com/uploads/rjgibbons408/2009-08-15_002559_scan001001.jpg Randall's Avatar

    Randall

    RVIA Certification

    Satisfied Customers:

    8162
    RVDA/RVIA Master Certified Technician with many years experience.
  • http://ww2.justanswer.com/uploads/gmplus72/2008-12-9_2615_just_answer.jpg Robert's Avatar

    Robert

    RV Mechanic

    Satisfied Customers:

    5678
    10 yrs. RV experience including Cummins North West, Country Coach, Monaco Coach - vendor certified.
  • http://ww2.justanswer.com/uploads/Guest/2008-01-30_172341_image0.jpg RIP ROBERT's Avatar

    RIP ROBERT

    R.V. TECH & MECHANIC

    Satisfied Customers:

    401
    35 plus years HANDS ON WORK TROUBLE SHOOTING & REPAIRS
  • http://ww2.justanswer.com/uploads/MU/muddyford/2012-6-13_1204_1.64x64.png Chris (aka-Moose)'s Avatar

    Chris (aka-Moose)

    RV Mechanic

    Satisfied Customers:

    263
    16 years of experience