John Deere 345 Ignition Module Problems

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John Deere 345 Ignition Module Problems

Why is My John Deere Cranking But Not Starting?

There are a few things you can check yourself before calling a technician if your John Deere tractor won’t start. First, make sure the battery is fully charged and that the connections are clean and tight. Next, check how much gas is in the tank and make sure it’s fresh gas.

If these two things are fine, the problem is probably with the spark plugs or the ignition system. You can try to fix the problem by cleaning the spark plugs and checking the gap. If not, you’ll need to call a technician to figure out what’s wrong and fix it.

What Engine Does a John Deere 345 Have?

John Deere 345 engines are Yanmar 3TNM72 or 3TNV88 diesel engines. The John Deere 345 has a 1.5 L engine with 20 horsepower. It has a 78 mm bore and a 77 mm stroke. The machine weighs 384 kg as a whole.

How Do I Reset My John Deere?

It’s easy to reset your John Deere if you need to. First, find the button on the control panel that says “Reset.” This is usually a black or red button with the word “reset” on it.

Please press this button and keep it pressed for about five seconds. The computer will then start up again and be ready to use.

How Do You Test a John Deere Ignition Module?

Tools are needed to test John Deere ignition modules. To check continuity and resistance, use a multimeter. Check power with a 12-volt test light.

To verify waveform integrity, use an oscilloscope. Check fuses and relays before testing the ignition module. If all are intact and working, try the ignition module.

Connect one multimeter lead to the ground and the other to each ignition module terminal to test continuity. All points should flow. Replace the ignition module if any locations have an open circuit or high resistance.

Use the 12-volt test light to check power by touching one lead to the ground and the other to each ignition module terminal (one at a time). Any power source should ignite the test light. If none of the points have power, additional diagnosis is needed to find the problem.

Finally, attach an oscilloscope probe to the ignition module terminals and observe the output signal on the scope to ensure waveform integrity. The waveform should have no spikes or dips.

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John Deere 345 Time Delay Module Symptoms

If any of the following happens to your John Deere 345 lawn tractor, it could be because of a problem with the time delay module:

  • The engine won’t start.
  • The engine starts, but after a few seconds, it stops working.
  • The engine works, but it’s slow and has less power.

Final Words

➡ If you have a John Deere 345 lawn tractor, the ignition module may have given you trouble. Several things, like age and wear and tear, can cause these problems.

➡ Ignition modules provide the spark that makes the fuel in the engine burn, so if they stop working, the engine won’t start.

➡ You might be able to change the ignition module yourself in some situations. But before you try to fix anything yourself, you should check your owner’s manual or talk to a qualified repair person.

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