Construction and Road Equipment

Construction and road equipment repair questions? Ask a mechanic ASAP

Connect one-on-one with {0} who will answer your question

Cat 320C excavator. Thumb will intermittently stop working.

Customer Question
While watching live data on...
Cat 320C excavator. Thumb will intermittently stop working. While watching live data on cat ET while the thumb stops working it shows basically all the AUX hyd valves and thumb rollers on left and right joy stick as not installed or disabled. Then it will go back to normal and work fine and so on.
When this happens we get a active code 254-9 electronic control module: abnormal update rate.
Submitted: 7 months ago.Category: Construction and Road Equipment
Show More
Show Less
Ask Your Own Construction and Road Equipment Question
Answered in 13 hours by:
4/14/2022
Mechanic: Dan, Technician replied 7 months ago
Dan
Dan, Technician
Category: Construction and Road Equipment
Satisfied Customers: 15,093
Experience: 17+ yrs. shop and field experience with all major brands of heavy equipment and trucks - 1995 WyoTech graduate.
Verified

Hi, My name is***** will be glad to help. We can follow up as needed on here, Give me some time to review your information and follow up with my responses. Professionals are not employees of the site but users of the site and help on here as time allows in between jobs, family,etc. Response time can vary depending on my work load each day but I will always respond back on my next available login. Feel free to respond back at anytime if for any reason we seem to get separated,for status, etc.

Ask Your Own Construction and Road Equipment Question
Mechanic: Dan, Technician replied 7 months ago

Sorry to hear you're having these troubles with this machine. Be sure to check all your fuses and relays and for any charging system problems that would cause voltage supply related issues on this machine. Check all of your ground connections and anything that would potentially affect voltage going to the ECM on this machine. Look for any type of corrosion or damage within the wiring or connector pins going to the ECM. If no problems are found here, this would lean towards either a software related glitch within the ECM itself or a possible ECM problem. Try re-flashing the software within the ECM if no problems are found within the wiring or components within your AUX circuit and joystick controls. If the joystick controls and wiring are confirmed good, try having the software recalibrated and updated to see if there may be some software related glitches that exist. 

I hope you find this information helpful. Reply back with the results of these checks if any further help is needed. It's a pleasure to help anyway I can.

Ask Your Own Construction and Road Equipment Question
Customer reply replied 7 months ago
Would this be the ECM? Or another module?
Mechanic: Dan, Technician replied 7 months ago

I was talking about the ECM.

Ask Your Own Construction and Road Equipment Question
Was this answer helpful?

How JustAnswer works

step-image
Describe your issueThe assistant will guide you
step-image
Chat 1:1 with a mechanicLicensed Experts are available 24/7
step-image
100% satisfaction guaranteeGet all the answers you need
Ask Dan Your Own Question
Dan
Dan
Dan, Technician
Category: Construction and Road Equipment
Satisfied Customers: 15,093
15,093 Satisfied Customers
Experience: 17+ yrs. shop and field experience with all major brands of heavy equipment and trucks - 1995 WyoTech graduate.

Dan is online now

Related Construction and Road Equipment Questions
Cat 320C excavator. Thumb will intermittently stop working.
Cat 320C excavator. Thumb will intermittently stop working. While watching live data on cat ET while the thumb stops working it shows basically all the AUX hyd valves and thumb rollers on left and rig… read more
catmastertech
catmastertech
Field service technician
Vocational, Technical or Trade Scho
1,325 satisfied customers
Cat 226 auxiliary's are not working. Has power to switch,
Cat 226 b auxiliary's are not working. Has power to switch, checked wiring harness has power to harness at main joystick connection. Took joy stick apart and the thumb roller switch is broken off on b… read more
Dan
Dan
Technician
Auto Mechanics 1&2/diesel mech
15,093 satisfied customers
Bought a 2003 s185 bobcat used. Just bought a cat 4 in 1
Bought a 2003 s185 bobcat used. Just bought a cat 4 in 1 bucket today. Where is the 4 in 1 controls to open and close the bucket? … read more
Fieldtech59
Fieldtech59
418 satisfied customers
I have older Cat 226. Thumb switches on right hand joy stick
I have older Cat 226. Thumb switches on right hand joy stick are starting to work intermittently. any suggestions on where to start diagnosing? … read more
Dan
Dan
Technician
Auto Mechanics 1&2/diesel mech
15,093 satisfied customers
I have a 2006 232b cat. Last year my auxiliary hyd. Started
Hi i have a 2006 232b cat. Last year my auxiliary hyd. Started to leak fluid and eventually any attachment ran extremely slow. I replaced the male and female ends on the machine but im having the same… read more
catmastertech
catmastertech
Field service technician
Vocational, Technical or Trade Scho
1,325 satisfied customers
Can not get the aux thump wheel to stay running nor will the
Can not get the aux thump wheel to stay running nor will the high flow lock in. Have a cat 257b with high flow and am currently using a brush mower. … read more
catmastertech
catmastertech
Field service technician
Vocational, Technical or Trade Scho
1,325 satisfied customers
I have a 226B cat skid steer. The hydraulic controls for the
I have a 226B cat skid steer. The hydraulic controls for the bucket open and close have gone haywire. How to diagnose the problem is my ?… read more
catmastertech
catmastertech
Field service technician
Vocational, Technical or Trade Scho
1,325 satisfied customers
Cat 938H SN mjc0029 complaint cust states while running the
Cat 938H SN mjc0029 complaint cust states while running the unit operator with apply the brakes useing the left pedel far let trans neteuilizer and down shift anyhow after he lets off the pedel he sta… read more
catmastertech
catmastertech
Field service technician
Vocational, Technical or Trade Scho
1,325 satisfied customers
I have a code 5856-9 on a caterpillar 320 excavator. could
i have a code 5856-9 on a caterpillar 320 excavator. could you tell me what it is … read more
catmastertech
catmastertech
Field service technician
Vocational, Technical or Trade Scho
1,325 satisfied customers
I have a cat 320c excavator. I replaced a boom cylinder and
I have a cat 320c excavator. I replaced a boom cylinder and now after some operation the thumb has quit working. I believe the thumb cylinder may have an air bubble. serial number 7jk88638… read more
catmastertech
catmastertech
Field service technician
Vocational, Technical or Trade Scho
1,325 satisfied customers
Catmastertech 316F SN FB600184 has falt codes 268-2 2348-9
catmastertech 316F SN FB600184 has falt codes 268-2 2348-9 1558-9 what can you tell me do i have a CAN DATA link issue… read more
catmastertech
catmastertech
Field service technician
Vocational, Technical or Trade Scho
1,325 satisfied customers
This is for catmastertech 330c DKY00314 ECM ERROR HYD PUMP
This is for catmastertech 330c DKY00314 ECM ERROR HYD PUMP CONTROL 254-12 I can not locate in SIS OR CBT can you advise ?… read more
catmastertech
catmastertech
Field service technician
Vocational, Technical or Trade Scho
1,325 satisfied customers
Cat master tech Can you tell me how to adjust the flow on
Cat master tech Can you tell me how to adjust the flow on the Aux Hyd Cat 430F SN TRDF00259… read more
catmastertech
catmastertech
Field service technician
Vocational, Technical or Trade Scho
1,325 satisfied customers
JA: We'll do all we can to help. Tell me a bit more
hello can you help .we have a 315c excavator the hydraulics seem to put to much strain on the engine we have replaced the hyd pump proportional valve sis shows engine hydraulic ecm error could this cause the problem … read more
catmastertech
catmastertech
Field service technician
Vocational, Technical or Trade Scho
1,325 satisfied customers
I have a TH360B Cat. Telehandler with codes: 039 0668 09,
I have a TH360B Cat. Telehandler with codes: 039 0668 09, 039 0271 04, (###) ###-####05, 039 1788 02. Just wondering if replacing the shifter would take care of it.… read more
catmastertech
catmastertech
Field service technician
Vocational, Technical or Trade Scho
1,325 satisfied customers
Can you email copy of wiring diagram mitsubishi mm55sr
can you email copy of wiring diagram for cat mitsubishi mm55sr excavator? We have lost all hydraulic functions except tracking. Everything works manually on hydraulics but nothing through electrics.Th… read more
Dan
Dan
Technician
Auto Mechanics 1&2/diesel mech
15,093 satisfied customers
I have a 301.5 cat mini excavator. It starts and runs perfectly. But.
I have a 301.5 cat mini excavator. It starts and runs perfectly. But. After running for a few seconds I lose all controls except swing and blade. If I turn the ignition switch off and on quickly so th… read more
Dan
Dan
Technician
Auto Mechanics 1&2/diesel mech
15,093 satisfied customers
HEY YO, WE HAVE A 287B HIGH FLO XPS. SERIAL #CAT0287BVZSA02906.
HEY YO, WE HAVE A 287B HIGH FLO XPS. SERIAL #CAT0287BVZSA02906. THE INTERLOCK OVERRIDE LIGHT IS STUCK ON WILL NOT TURN OFF. HIGH FLOW FUNCTION DISABLED BUT 2 BUTTONS ON RIGHT JOYSTICK STILL ACTIVATE W… read more
catmastertech
catmastertech
Field service technician
Vocational, Technical or Trade Scho
1,325 satisfied customers
Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

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:

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

This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!!

AlexLos Angeles, CA

Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult.

GPHesperia, CA

I couldn't be more satisfied! This is the site I will always come to when I need a second opinion.

JustinKernersville, NC

Just let me say that this encounter has been entirely professional and most helpful. I liked that I could ask additional questions and get answered in a very short turn around.

EstherWoodstock, NY

Thank you so much for taking your time and knowledge to support my concerns. Not only did you answer my questions, you even took it a step further with replying with more pertinent information I needed to know.

RobinElkton, Maryland

He answered my question promptly and gave me accurate, detailed information. If all of your experts are half as good, you have a great thing going here.

DianeDallas, TX

< Previous | Next >

Meet the Experts:

Curtis B.

Curtis B.

Technician

2,324 satisfied customers

Technican turned service manager with multiple lines of equipment and rental units.

Wayne

Wayne

Journeyman

1,298 satisfied customers

worked on many road graders, Bull dozers , skid steers, Rollers

Cat Man

Cat Man

Cat Engine Expert

578 satisfied customers

I am ASE Master Certified.

dieseldan55

dieseldan55

Mechanic

299 satisfied customers

Road Mechanic for Volvo Construction Equipment.

Chris (aka- Moose)

Chris (aka- Moose)

Technician

85 satisfied customers

24 years of experience diagnosing & repairing

Steve

Steve

Mechanic

42 satisfied customers

Heavy Equipment Mechanic for 25 years

JBFixxer

JBFixxer

Mechanic

22 satisfied customers

16+ years experience, hydraulics,hydrostatics, engines, fuel injection systems. And everything in between.

< Previous | Next >

Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Show MoreShow Less

Ask Your Question

x