JD 870 will not start...UPDATE>>>REPAIRED!!!
Greetings,
I have not posted here in ages, because of no issues with my tractor. This morning, that all changed.
I went to start the tractor, and it turned over 2, maybe 3 times then the battery went dead. It slowed cranking to a crawl, until it would not turn over at all. The battery has needed replacing all summer, but I have been putting it off.
I decide to jump start it so I could finish a small job I needed to do. Jumping would not work. I could turn the key, but nothing happened. I had lights, hazards, etc. but would not turn over.
I also did not hear the usual "click" from what I assume is the fuel solenoid. Dead as a door nail.
I searched here and found this thread: https://www.tractorbynet.com/forums/john-deere-owning-operating/126772-jd870-will-not-start-2.html
Using this info, I started searching.
First thing I did was to go buy a brand new battery.
Next I checked for voltage at the starter, on the larger wire running from the battery. I had a good 12V at this point.
Next I tried checking for voltage on the smaller wire on the solenoid. With the new battery in, and key in "crank" position, I had no voltage on the small wire.
Next, out of desperation, I jumped between the starter and solenoid. The tractor cranks and cranks, but will not start.
Keeping up my search, I found a blown fuse in the fuse panel. The leftmost 3A fuse was blown. No idea why.
I replaced it, and now when I turn the key on, I hear the familiar "click" of the solenoid. But no start. Still 100% dead trying the key.
I do now have 12V on the smaller starter wire after replacing the fuse.
Back to my jumper, with the key on, a barely touch the starter with my jumper, tractor started, and has been running fine all day.
Just turned it off, and completely dead. Something has broken or another fuse blown maybe? Some sort of safety relay gone bad?
Anybody have any ideas on what I might try and troubleshoot next?
Thanks,
Jerry
Greetings,
I have not posted here in ages, because of no issues with my tractor. This morning, that all changed.
I went to start the tractor, and it turned over 2, maybe 3 times then the battery went dead. It slowed cranking to a crawl, until it would not turn over at all. The battery has needed replacing all summer, but I have been putting it off.
I decide to jump start it so I could finish a small job I needed to do. Jumping would not work. I could turn the key, but nothing happened. I had lights, hazards, etc. but would not turn over.
I also did not hear the usual "click" from what I assume is the fuel solenoid. Dead as a door nail.
I searched here and found this thread: https://www.tractorbynet.com/forums/john-deere-owning-operating/126772-jd870-will-not-start-2.html
Using this info, I started searching.
First thing I did was to go buy a brand new battery.
Next I checked for voltage at the starter, on the larger wire running from the battery. I had a good 12V at this point.
Next I tried checking for voltage on the smaller wire on the solenoid. With the new battery in, and key in "crank" position, I had no voltage on the small wire.
Next, out of desperation, I jumped between the starter and solenoid. The tractor cranks and cranks, but will not start.
Keeping up my search, I found a blown fuse in the fuse panel. The leftmost 3A fuse was blown. No idea why.
I replaced it, and now when I turn the key on, I hear the familiar "click" of the solenoid. But no start. Still 100% dead trying the key.
I do now have 12V on the smaller starter wire after replacing the fuse.
Back to my jumper, with the key on, a barely touch the starter with my jumper, tractor started, and has been running fine all day.
Just turned it off, and completely dead. Something has broken or another fuse blown maybe? Some sort of safety relay gone bad?
Anybody have any ideas on what I might try and troubleshoot next?
Thanks,
Jerry
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