My tractor is a little over 2 years old so is off warranty now. Kept blowing the 7.5 amp fuse on the pto and my dealer finally figured it was the pto relay. Then I started blowing the 10 amp fuse on the wiring harness. My dealer has changed the fuel solenoid twice now. The last time he changed it my tractor worked about 6 hours before the fuse failed again. They said they checked the wiring harness for shorts and found none. They have no idea what's causing this. This coming week will be the eighth week I haven't had use of the tractor this summer. Has anyone here had a similiar problem? Any ideas would be greatly appreciated.
Keep blowing 10 amp fuse on my Emax22
- Thread starter Butch51
- Start date
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RNeumann
Elite Member
A lot of Mahindra tractors have had a lot of battery cable issues. Cable that "look fine" are often not in great shape.
If the two items are in fact related, a bad ground is high on the likelihood list. With a bad ground, about anything can turn into the ground path and or be back fed causing failure. That's where I'd start.
Beyond that, I am firm believer in roughly manipulating wiring and connections with the machine running. This was our preferred diagnosis method with "mystery" electrical issues.
If the two items are in fact related, a bad ground is high on the likelihood list. With a bad ground, about anything can turn into the ground path and or be back fed causing failure. That's where I'd start.
Beyond that, I am firm believer in roughly manipulating wiring and connections with the machine running. This was our preferred diagnosis method with "mystery" electrical issues.
Spanner
Veteran Member
Sounds like you have an intermittent short-circuit in your harness. Probably a bared wire rubbing due to vibration. You will only have a chance of finding it when it displays the symptom and is actually shorting.
"beenthere" I think has a great tip for using a light bulb to find when the circuit is shorting. Moving the harness around until the bulb lights-up narrows the location of the S/c.
Search the forum for his tip.
"beenthere" I think has a great tip for using a light bulb to find when the circuit is shorting. Moving the harness around until the bulb lights-up narrows the location of the S/c.
Search the forum for his tip.
Just put a new ground able on. Now it's blowing the 10 amp fuse when I turn the key left for the glo plug. Before it would blow when I turned the engine over. Will play with the harness next. I really appreciate the feedback from you and Spanner.
Spanner
Veteran Member
The tip from 'beenthere' is in Post #2 of this thread:
http://www.tractorbynet.com/forums/chinese-tractors/43939-30-amp-fuse-keeps-blowing.html
and the full 5 pages would be good reading for you.
Look at the bottom of this page below the "Quick Reply" box and find a list of "Similar Threads" which you should read also.
The "Search" function (Top Right) is very useful as well.
http://www.tractorbynet.com/forums/chinese-tractors/43939-30-amp-fuse-keeps-blowing.html
and the full 5 pages would be good reading for you.
Look at the bottom of this page below the "Quick Reply" box and find a list of "Similar Threads" which you should read also.
The "Search" function (Top Right) is very useful as well.
Check you headlight wires were they run down the hood... I had one that was loose and got pinched by the hood closing and would short the tractor out and blow that exact fuse... Id bet 95% you got a cut wire touching metal somewere. If its not in that spot check were the wires go behind the ECU they make a bend and can rub against brackets for the ecu
SedonaDave
Bronze Member
A fuse will only do 2 things......Cut out on a short, or over current protection.....Who in the world would think any relay could blow a 10 amp fuse?
Pull that fuse, look at wiring diagram....Check those wires to ground with continuity, tractor running and off.....Sound just like a shorted or pinched wire......Eventually it will totally fail!
Pull that fuse, look at wiring diagram....Check those wires to ground with continuity, tractor running and off.....Sound just like a shorted or pinched wire......Eventually it will totally fail!
tjkubota93
Veteran Member
That light bulb in place of a fuse is a technique taught by ford technical training to dealer techs. It works well. I have used it as a tech and a field service engineer.
agd5f
New member
Make sure the fuse clamp (what the fuse fits into) is tight. They don't always make good contact with the fuse which can cause problems.
Jabonee
Platinum Member
There has been a few issues with the EMAX wiring harnesses. Splices are crimped not soldered. I've repaired and replaced a few with your issue. One of the main issues on early EMAXs was the harness at the ECU. The harness makes a sharp bend where it exits the ECU and is routed behind it. Early units were rubbing the air filter bracket causing fuses to fail. Mahindra added a piece of trim on the bracket to protect the harness. You may want to check if the trim is there. If it is not check the harness there.:thumbsup:
