JD 5105 not staying primed

[Birddog Dave]

The alt and fuel solenoid fuses are reading 0.55 volts on the multi-meter.

 

[SatchmoIsBack]

I don't know squat about John Deere but I know that Diesels with a HPFP can be very sensitive when it comes to filters and filter housings. I'd check there, Thoroughly, and work from there. Diesels require three things to run - Fuel, Air and Compression. The HPFP (HighPressureFuelPump) is a wonderful invention but it brings certain headaches with it. It's why they go for $2,700 new. On your tractor

Make absolutely certain you're running an OEM fiter and check the housing for cracks or leaks. I've seen more problems with aftermarket filters on diesels than almost anything else. Except for maybe the emissions garbage, which you shouldn't have much of anyway. If at all.

Good luck.

 

[Birddog Dave]

Thanks, I think that I have narrowed it down to not getting voltage to my fuel shut off solenoid. Possibly a bad ground or connection. I’m just having a hard time finding the culprit.

 

[Birddog Dave]

Does anyone know if this unit has a separated relay for the Inj pump solenoid?

If so, Where is it located. I have only found 1 relay and 2 other relay-ish items inside the console by the fuse box. The one relay tested fine.

 

[Quebecguy]

Does anyone know if this unit has a separated relay for the Inj pump solenoid?

If so, Where is it located. I have only found 1 relay and 2 other relay-ish items inside the console by the fuse box. The one relay tested fine.

I'll attach a copy of the manual page showing the locations of some of the relays but to troubleshoot your problem correctly you should acquire a manual. The up front cost may seem like a lot but will pay off in the long run if you wish to do your own repairs.

 

[Birddog Dave]

Two of the six relays that are in the left side of the console tested bad. I swapped them around and was able to get voltage to the shutoff solenoid. Ordered from the dealer.

 

[Birddog Dave]

I'll attach a copy of the manual page showing the locations of some of the relays but to troubleshoot your problem correctly you should acquire a manual. The up front cost may seem like a lot but will pay off in the long run if you wish to do your own repairs.

Thanks for your help!