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 Rudolph Diesel Your Own Question

Rudolph Diesel
Rudolph Diesel, ASE ,Master Heavy Truck Technichian
Category: Heavy Equipment
Satisfied Customers: 1770
Experience:  25 YEARS OF HEAVY EQUIPMENT REPAIRS
Type Your Heavy Equipment Question Here...
Rudolph Diesel is online now
A new question is answered every 9 seconds

Kenworth..it and the speedo isnt consistent..bounce

Resolved Question:

I have a 2000 kenworth t800. Just bought it and the speedo isnt consistent. When doing say 70, it will read around sixty and then bounce around usually up. When I stand on it with the foot feed to the floor, it 90% of the time will bounce up to the accurate speed. I am using a gps to figure out my speed. Sometimes when the jakes are on, it will jump up to correct speed. I replaced the sensor on back of the tranny, to no avail. Also the fuel gauge will be correct for a while, then bounces down and back, and then to normal again. Thinking im having a ground issue, but not sure. Maybe a bared wire that has been worn thin.
Thanks
Bill
Submitted: 3 years ago.
Category: Heavy Equipment
Expert:  Rudolph Diesel replied 3 years ago.

Hello

Welcome!

Is the fuse box in the firewall panel cover is just behind the clutch pedal?

Or is it in the glove box left side?

Thanks!

Customer: replied 3 years ago.
behind the clutch pedal.
Expert:  Rudolph Diesel replied 3 years ago.

Great thanks!

Here is what i have seen with what your describing,

I have a lot of hours into this kind of problem and what i found (last place i looked)

 

Is the wind shield seal above the fuses box will leak and get the fuses wet

if you pull the fuse box out from the firewall you will see where the back of the fuse panel has gotten wet and then all the connectors need to be clean and the ground here too,

I have seen it where the speedo jumps around like a bad speed sensor.

lights stop working, gages work and don't work.

 

The seal around the windshield does not fit the best I have seen drivers com in saying the inside of the windshield is wet.

So i pull the windshield and seal run a bead of clear silicone around it and along where the fire wall is seam to the cab and put the seal and windshield back in,,

Then i aways pull the fuses box and clean that up too because down the road the gages and lights act up.

 

Let me know if i can help more!

Rudolph Diesel, ASE ,Master Heavy Truck Technichian
Category: Heavy Equipment
Satisfied Customers: 1770
Experience: 25 YEARS OF HEAVY EQUIPMENT REPAIRS
Rudolph Diesel and 4 other Heavy Equipment Specialists are ready to help you

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
  • 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
 
 
 

Meet The Experts:

 
 
 
  • Chris (aka - Moose)'s Avatar

    Chris (aka - Moose)

    Technician

    Satisfied Customers:

    112
    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:

    112
    16 years of experience
  • http://ww2.justanswer.com/uploads/Boxerman1969/2009-06-22_213107_ja_avatar.JPG Tim's Avatar

    Tim

    Foreman

    Satisfied Customers:

    338
    23 Years Heavy Equipment and Truck Repairs Shop and Field in the Minning and Construction Industry
  • http://ww2.justanswer.com/uploads/jrwhitey2000/2009-01-03_193237_me.jpg J.R.'s Avatar

    J.R.

    Technician

    Satisfied Customers:

    148
    13 years as warranty technician for Detroit Diesel
  • http://ww2.justanswer.com/uploads/yellowman99/2010-03-20_033822_Marshall_Pete_Furr.jpg Cat Man's Avatar

    Cat Man

    Caterpillar Engine Expert

    Satisfied Customers:

    3706
    23 Years Caterpillar Engine experience.
  • http://ww2.justanswer.com/uploads/WT/wtolkson/2012-6-8_12723_JApicture2012.64x64.jpg Wayne's Avatar

    Wayne

    Journeyman

    Satisfied Customers:

    3017
    34 years experiance as engine rebuild and problems.Thermo-King repair and trouble shooting.
  • http://ww2.justanswer.com/uploads/cumminsdr/2010-7-20_204410_ja.jpg DR.Cummins's Avatar

    DR.Cummins

    FIELD SERVICE TECHNICIAN

    Satisfied Customers:

    2352
    16 Years working on Cummins Diesel engines,
  • http://ww2.justanswer.com/uploads/KO/koboma/2012-6-6_20917_DSCF1022.64x64.JPG Curtis B.'s Avatar

    Curtis B.

    service manager

    Satisfied Customers:

    2226
    30 years exp. with diesel engines, heavy equipment and forklifts, including lp forklifts