John Deere 4100 wont start
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Dave M7040
Elite Member
- Joined
- Dec 10, 2012
- Messages
- 2,757
- Location
- Williamstown Ontario Canada
- Tractor
- Kubota M7040 Nuffield 465
Dave M7040
Elite Member
- Joined
- Dec 10, 2012
- Messages
- 2,757
- Location
- Williamstown Ontario Canada
- Tractor
- Kubota M7040 Nuffield 465
The logic module is a critical part in the starting and running of your tractor.
As the description states, it operates as IF somethings happen (seat switch, pto switch hi low switch etc) THEN the logic module sends power to the starter relay, the fuel relay the Glow Plug relay.
I appreciate how difficult going through these procedures to find what is wrong unless you do it for a living or have unique training.
If you want to go through the steps I will do my best to help you.
Usually it is something simple and stupid that is at fault and when found you will give yourself a good kick.
The control module is almost $500 on ebay.com so you don't want to start changing it until your are very very certain it is the problem
John Deere Control Box For 4
, 41 , 411 , and 4115 M8 7913 | eBay
As I look at the inputs to the control module I suggest you double check what you are doing.
For example, the hi low range selector has to be in neutral which is unusual in my experience. Have that in either Hi or Low and nothing works.
Dave M7040
As the description states, it operates as IF somethings happen (seat switch, pto switch hi low switch etc) THEN the logic module sends power to the starter relay, the fuel relay the Glow Plug relay.
I appreciate how difficult going through these procedures to find what is wrong unless you do it for a living or have unique training.
If you want to go through the steps I will do my best to help you.
Usually it is something simple and stupid that is at fault and when found you will give yourself a good kick.
The control module is almost $500 on ebay.com so you don't want to start changing it until your are very very certain it is the problem
John Deere Control Box For 4
, 41 , 411 , and 4115 M8 7913 | eBayAs I look at the inputs to the control module I suggest you double check what you are doing.
For example, the hi low range selector has to be in neutral which is unusual in my experience. Have that in either Hi or Low and nothing works.
Dave M7040
Rdmmo
New member
Looking for some advice on my 1999 John Deere 4100 HST. When key is in the on position everything is fine, lights work etc. when I turn they key further to start the engine, it may turn over a few times but the fusible link on the starter blows immediately. Battery connections and grounds to frame are all good. I've looked for bare wires everywhere and can't find anything. Checked seat safety switch, PTO switch etc all good. Any help would be greatly appreciated. Snowing and blowing here and I need to get to work. Thanks!
Dave M7040
Elite Member
- Joined
- Dec 10, 2012
- Messages
- 2,757
- Location
- Williamstown Ontario Canada
- Tractor
- Kubota M7040 Nuffield 465
I am not a forum expert but suggest starting a new thread would get you more help. If you do start a new thread PM me so I dont miss it.
What are you replacing the blown fusible link with?
I have a 4100 WSM from another member.
Do you have a wiring diagram in your owner's manual which you could post? I need to be certain your wiring diagram and the one in the WSM I have are the same.
To blow the fusible link means a serious current draw. You need to eliminate a number of circuits by removing relays and fuses to narrow down your search
Although it will likely not allow your tractor to start, eliminating the Glow plug circuit by disconnecting the GP relay is a good starting point. If the Fusible link does not blow as before, you will know where to start looking.
Dave M7040
Dave,
Thanks very much for taking the time to help me on this. I apologize for lack of response as have been out of town. I haven't had a chance to work on this in over a month but it is still sitting and won't start. With the weather here in Buffalo it won't be until March until I can continue to work on this. thanks again I really appreciate your time and will let you know how I make out.
Thanks very much for taking the time to help me on this. I apologize for lack of response as have been out of town. I haven't had a chance to work on this in over a month but it is still sitting and won't start. With the weather here in Buffalo it won't be until March until I can continue to work on this. thanks again I really appreciate your time and will let you know how I make out.
