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Dan, Technician
Category: Agriculture and Farm Equipment
Satisfied Customers: 7392
Experience:  17+ yrs. shop and field experience with all major brands of heavy equipment, trucks and farm equipment - 1995 WyoTech graduate.
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We have a jd 3420. engien light is flashing code 28 or 82

Customer Question

we have a jd 3420. engien light is flashing code 28 or 82 after fitting new ecu. machine wont start
JA: What is the complete model and serial number of your machine?
Customer: jd 3420 forklift. i dont have it to hand its late 2005 model
JA: Are you fixing this yourself? What have you tried so far?
Customer: new ecu
JA: Anything else you want the equipment mechanic to know before I connect you?
Customer: have ordered foot throttle sensor, new battery, new injectors, new fuel filters
Submitted: 1 year ago.
Category: Agriculture and Farm Equipment
Expert:  Dan replied 1 year ago.

Hi my name is***** you still need help with this? If so let me know. We can follow up as needed.

Customer: replied 1 year ago.
dan, yes please, have paid the money and never heard back
Customer: replied 1 year ago.
have changed fuel filters, lift pump, engine oil
new injectors, fuel pump pressure tested
Expert:  Dan replied 1 year ago.

Thanks for the update. Professionals arent employees of the site but users of the site like yourself. we can follow up as needed. 28 is low voltage under 10v to the ECU. Test the battery with a battery tester for bad cells etc and also inspect the cables and connections to be clean, tight, and free from damage including all grounds. The new ECU should be properly programmed for your tractor as well.... Check to see if the dealer had it programmed before you received it. John Deere service advisor is needed for that from the dealer.

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Expert:  Dan replied 11 months ago.

Hi, Did you get this resolved? Please take a moment to rate as that is how the site credits my time helping on the site or let me know if you need more help. 5 star and bonuses are always greatly appreciated.