Small Engine

Small Engine Troubleshooting Problems? Ask a Mechanic Now.

Ask an Expert,
Get an Answer ASAP!

Small Engine
This answer was rated:

Are you able to diagnosis a problem with a curtis motor

controller? Specifically model 1268-5506....
Are you able to diagnosis a problem with a curtis motor controller? Specifically model 1268-5506.
Ask Your Own Small Engine Question
Answered in 1 hour by:
1/13/2018
Curtis B.
Curtis B., Technician
Category: Small Engine
Satisfied Customers: 29,667
Experience: have worked on and around most engine models for 35 yrs./Polaris ATV expert
Verified

Welcome to JUST ANSWER small engines, let me try to help you !! I don't know it all, but maybe together we can get you a satisfactory answer!

Ask Your Own Small Engine Question

What is the problem? Here is manual and has trouble shooting at page #47

Ask Your Own Small Engine Question
Ask Your Own Small Engine Question
Customer reply replied 1 month ago
Thank you I do have the manual. My problem is my old motor failed in my Club Car DS IQ. I replaced it with an AMD 7714 and put in a Curtis 1268-5506 controller (which is supposed to be specific to that motor). I have upgraded the wiring to 4g and added the heavy duty solenoid as required. Since I installed the controller I only get the throttle fault (1,2 code) and the cart won't move. I replaced the MCOR 4 and have the same problem. I can find no wires shorted or even skinned. Ohms for the wires involved with the MCOR measure 0.5 or less though the MCOR itself measures about 120 ohm. I have checked three different MCOR and they all show the same ohms.
What else am I missing?

48 volt cart? Do you have 48 volts to both sides of the solenoid? Does the solenoid close when pedal is pressed? is MCOR sending a signal to the controller?

Ask Your Own Small Engine Question
Ask Your Own Small Engine Question
Customer reply replied 1 month ago
It is 48 and I do have voltage across the solenoid. When you hit the throttle the solenoid engages and I do have an OEM Curtis 1313-4331 scanner. The scanner shows 0-100 throttle response as you move the pedal.

You have a new motor, could motor be working, but the motor spline to transmission not installed? the motor is almost silent.

Ask Your Own Small Engine Question

Are you getting voltage to the field terminals of the motor from the controller?

Ask Your Own Small Engine Question
Customer reply replied 1 month ago
I bypassed the controller to do a slow speed test of the motor. It spun just fine. There is no 48v output from the controller on the M connector point despite having 48v in from the solenoid.

So you are saying the controller is bad!

Ask Your Own Small Engine Question
Customer reply replied 1 month ago
I don't believe so. I'm wondering if it is a parameters or programming issue
Customer reply replied 1 month ago
The speed sensor tests good as well

See the troubleshooting guide and run the controller test shown.

Ask Your Own Small Engine Question
Customer reply replied 1 month ago
Which part are you specifically referring to? If you are speaking of page 46 I don't know what parameters are important to check in the monitor page. (step 3)

No the simple test is shown in the Carts Unlimited guide.

Ask Your Own Small Engine Question
Customer reply replied 1 month ago
Can you send me to the page please?
Ask Your Own Small Engine Question
Customer reply replied 1 month ago
Okay...I showed 0 volts until I moved the throttle enough to engage the solenoid. I then registered 48V plus and it slowly went to 0 volts

By that, you have the problem in the high amperage side of the circuit. Cables, connections, f/r switch or motor.

Ask Your Own Small Engine Question
Customer reply replied 1 month ago
Alright. I'll test those per the same page you sent me and get back to you shortly if that's alright.

OK>

Ask Your Own Small Engine Question

You put on new cables, don't overlook that one cable may have a bad connection!

Ask Your Own Small Engine Question
Customer reply replied 1 month ago
Okay.....I have 26 plus volts at the forward/reverse switch power lead. When I put it in forward I get the same voltage on its respective lead and the same for reverse. I have good continuity on all my cables and no unwanted continuity at the motor.

Why is there not 48 volts to the f/r switch??

Ask Your Own Small Engine Question
Customer reply replied 1 month ago
I'm not sure. The scanner shows it is picking up the forward and reverse switches, as it shows when I flip positions one switch turns off and the other on. Does it need 48 or is it a signal wire?
Customer reply replied 1 month ago
Disregard last. I originally used a mid-stream battery as ground. Picked up a better ground point (the b-) amd I now have full battery voltage (51v +)

I don't think the controller needs programming, but it is not sending voltage to the field terminals of the drive motor. So drive motor does not start.

Ask Your Own Small Engine Question
Customer reply replied 1 month ago
When I hit the throttle I get full battery power to both A1 and A2 at the motor. How many volts and when should I have power at F1 and/or F2

A1 and A 2 should always have battery pack voltage, the Field terminals are the input from the controller, to vary speed, so voltage varys.

Ask Your Own Small Engine Question
Customer reply replied 1 month ago
Okay so they should rise and fall linearly with pedal input?
Customer reply replied 1 month ago
When I hit the throttle I have 88.8v on f1 and 9.8v on f2. It doesn't seem to vary though
Customer reply replied 1 month ago
now...its giving me a speed sensor fault...but I changed it out and get the same thing

What happens if the speed sensor is unplugged?

Ask Your Own Small Engine Question
Customer reply replied 1 month ago
No change.

When you tested the motor voltage and came up with 88 volts, was that forward and reverse reading?

Ask Your Own Small Engine Question
Customer reply replied 1 month ago
Reverse F1 is 9.45v and F2 is 62.2v

Wher is this high voltage coming from, the controller? I can't say I have ever seen where battery increases over the battery pack voltage.

Ask Your Own Small Engine Question
Customer reply replied 1 month ago
Oh wow...my bad. Those are all milivolt readings. Sorry...its getting late. So basically 0 volts
Customer reply replied 1 month ago
Just for reference ...I'm reading B- to F1 or F2

Maybe you want t to continue tomorrow.

Ask Your Own Small Engine Question
Customer reply replied 1 month ago
Is Tuesday okay....this is a work cart and I'm off until then

Sure, I'm retired and will be here.

Ask Your Own Small Engine Question

I see the question is still open, did you see my response?

Ask Your Own Small Engine Question
Customer reply replied 30 days ago
Hey there Sorry I haven't gotten back to you. We have been crazy busy here. So basically where we left off is....we have battery pack voltage to the motor over A1/A2 but nothing over F1/F2 when the throttle is engaged. The throttle (MCOR4) is functioning appropriately as is the F/R switch and speed sensor. All have been tested and/or replaced with no change in the problem (which is no motion when throttle applied and 1,2 code throttle fault). The controller seems to be where the problem lies. I have a Curtis scanner which confirms everything I have stated above. I'm fairly certain the controller has a parameter mismatch issue of some sort. The motor is item 7144 on Buggies Unlimited and the controller is item 988. Both are brand new. Do you happen to have a list of parameters I could check?

O, I do not, but if no voltage to the F1 abd F2 , it is not going to drive. You have no output from the controller? If none, where did you get the controller, Buggys Unlimited?Give them a call, sounds like the new controller is bad!

Curtis B.
Curtis B., Technician
Category: Small Engine
Satisfied Customers: 29,667
Experience: have worked on and around most engine models for 35 yrs./Polaris ATV expert
Verified
Curtis B. and 87 other Small Engine Specialists are ready to help you
Ask your own question now
Customer reply replied 30 days ago
Okay I will check back with them. Thank you for your help walking me through the rest of the cart.
Was this answer helpful?
Ask Curtis B. Your Own Question
Curtis B.
Curtis B.
Curtis B., Technician
Category: Small Engine
Satisfied Customers: 29,667
29,667 Satisfied Customers
Experience: have worked on and around most engine models for 35 yrs./Polaris ATV expert

Curtis B. is online now

A new question is answered every 9 seconds

How JustAnswer works:

  • Ask an ExpertExperts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional AnswerVia email, text message, or notification as you wait on our site. Ask follow up questions if you need to.
  • 100% Satisfaction GuaranteeRate the answer you receive.

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:

You did one super job of explaining to me everything there is to know about this fridge. I'm looking forward to asking you questions in the future.

JimmyBagley, IA

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

< Previous | Next >

Meet the Experts:

Curtis B.

Curtis B.

Technician

29,667 satisfied customers

have worked on and around most engine models for 35 yrs./Polaris ATV expert

Rick

Rick

Factory Authorized Trainer

4,218 satisfied customers

Outdoor Power Equipment technical trainer since 1990, covering eight states.

Jon K.

Jon K.

Small Engine Diagnostic Expert

2,995 satisfied customers

Gold certified Stihl tech, Service Manager for a rental/repair shop.Certified in most small engines

James W

James W

Small Engine Troubleshooting Expert

2,986 satisfied customers

7 years as Mechanic & Parts Manager for Brother who has Owned Lawn & Garden Repair shop for 35 years

Vince O.

Vince O.

Small Engine Technician

2,858 satisfied customers

Over 30 years experience repairing lawn and garden equipment. Chainsaws, mowers,blowers and trimmers

RUSS

RUSS

SERVICE TECHNICIAN

1,723 satisfied customers

28 YEAR SERVICE TECHNICIAN

Wayne

Wayne

Engine Rebuilder

1,607 satisfied customers

many years on egine rebuilding, lawn mower,roto tiller,Truck,and small engines

< Previous | Next >

Related Small Engine Questions
I have 3 Generac generators that are not putting out power.
I have 3 Generac generators that are not putting out power. I pulled the AVR on these units. Can the AVR be ohmed to see if it is good or bad ? If it can't be ohmed -- how can I test these AVR's ?? I … read more
Hank F.
Hank F.
Service Technician
High School or GED
5,363 satisfied customers
I am calling on behalf of a family. He has a General
Hi my name is Donald JA: I'll do all I can to help. How long have you been dealing with this? Customer: I am calling on behalf of a family JA: Do you plan on doing the work yourself? Customer: He has … read more
Hank F.
Hank F.
Service Technician
High School or GED
5,363 satisfied customers
I am missing the two set screws to hold the blade in the
I am missing the two set screws to hold the blade in the unit. How can i order the two missing parts? … read more
Wayne
Wayne
Engine Rebuilder
Vocational, Technical or Trade Scho
1,607 satisfied customers
Solution to battery on mowers not staying charged. Install a
Solution to battery on mowers not staying charged. Install a toggle switch on the ground wire of the negative post on the battery. Turn the switch off when mower is not in use… read more
Curtis B.
Curtis B.
Technician
29,667 satisfied customers
I have a Wisconsin VF4D engine in my bobcat 610. I just put
I have a Wisconsin VF4D engine in my bobcat 610. I just put a brand new carb on it but I do not think I am getting any spark to the spark plugs. Someone put a generic coil in it, but I am picking up t… read more
Curtis B.
Curtis B.
Technician
29,667 satisfied customers
What causes the engine to run at full throttle and not at a
what causes the engine to run at full throttle and not at a reduced speed or idle on a iseki bolens diesel … read more
spankyjr1
spankyjr1
Retired
Vocational, Technical or Trade Scho
19 satisfied customers
I have an MTD snow blower and the choke lever is not
hello, I have an MTD snow blower and the choke lever is not connected to the throttle. It seems a spring is missing. I can find the part anywhere on-line. any ideas? MTD 31AE150-129 … read more
Curtis B.
Curtis B.
Technician
29,667 satisfied customers
My 2009 20333 recycler only drives the right side rear
My 2009 20333 recycler only drives the right side rear wheel. Is the transmission at fault. The left side wheel is new and drive pinion is in new condition. Right side wheel just tears up the ground o… read more
Curtis B.
Curtis B.
Technician
29,667 satisfied customers
I have craftsman lawn tractor (26 hp kohler engine-model
i have craftsman lawn tractor (26 hp kohler engine-model sv735-0017) with a snower blower attachment. it was running fine and lost the drive belt from the pto. i replace belt with a new one and starte… read more
Curtis B.
Curtis B.
Technician
29,667 satisfied customers
I have a Craftsman skill saw and power drill/driver (14.4).
I have a Craftsman skill saw and power drill/driver (14.4). Received them as a gift 2 years ago and stuck the case under the work bench = never used it. Now that I want to use them, I can not seem to … read more
canuck the pro
canuck the pro
251 satisfied customers
I got a Generac 15,000 watt generator rom son-in-law in
I got a Generac 15,000 watt generator rom son-in-law in pieces. I am trying to figure out where the controller fits near the carburetor. Any help??? … read more
Wayne
Wayne
Engine Rebuilder
Vocational, Technical or Trade Scho
1,607 satisfied customers
I caught a screen under my mower. It screeched then smoke
I caught a screen under my mower. It screeched then white smoke came out. I try to restart but it just wont turn over. Please help … read more
JON
JON
Master Service Tech
MASTER SERVICE TECHNICIAN
1,539 satisfied customers
I have a Deere L111 riding mower that will not move. I see
I have a John Deere L111 riding mower that will not move. I see the belt on the trans axle does not move with the engine running and the right peddle engaged forward. The disenage rod in the rear is p… read more
JON
JON
Master Service Tech
MASTER SERVICE TECHNICIAN
1,539 satisfied customers
I just purchased a used ECHO gasoline operated approximately
I just purchased a used ECHO gasoline operated approximately 24" hedge trimmer that cranked right up and then stopped. The starting rope is stuck with the handle next to the motor and I cannot pull it… read more
JON
JON
Master Service Tech
MASTER SERVICE TECHNICIAN
1,539 satisfied customers
I have a murry riding lawn mower. Double bladed. I need to
I have a murry riding lawn mower. Double bladed. I need to take off the belt that turns the blades. I can take it off the front metal wheel and then slip it off the next two pulley wheels but the two … read more
Curtis B.
Curtis B.
Technician
29,667 satisfied customers
Replace drive belt on 2011 murray snowblower. A few days
replace drive belt on 2011 murray snowblower JA: I'll do all I can to help. How long have you been dealing with this? Customer: a few days JA: Do you plan on doing the work yourself? Customer: yes JA:… read more
Curtis B.
Curtis B.
Technician
29,667 satisfied customers
I am trying to finish assembly of a Brute 24 inch 950 series
I am trying to finish assembly of a Brute 24 inch 950 series snowblower. However I am stuck on the chute rotation rod installation^ the rod itself did NOT come inserted into the eye bolt with which is… read more
Curtis B.
Curtis B.
Technician
29,667 satisfied customers
Adjusting valves mower back fires through cab when trying.
adjusting valves mower back fires through cab when trying … read more
JON
JON
Master Service Tech
MASTER SERVICE TECHNICIAN
1,539 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.

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