L-3400 Will only idle.

longhairlimy · Mar 27, 2013

Powered off a cam.Don't have a clue!

Coyote machine · Mar 27, 2013

longhairlimy said:
Powered off a cam.Don't have a clue!

I suspect something expands with heat and contracts back to normal when cold. I'd look for wear marks indicating where it is 'binding' when hot.
Let us know when you replace it with a new one how it's working.

longhairlimy · Mar 29, 2013

Another thought,How about the Fuel solenoid on the front of the Injection pump.Anyone have a way to test? Ohm's maybe? I'm just not sold yet!

Coyote machine · Mar 29, 2013

longhairlimy said:
Another thought,How about the Fuel solenoid on the front of the Injection pump.Anyone have a way to test? Ohm's maybe? I'm just not sold yet!

I'm confused. I thought you had determined the cam driven fuel pump was the problem?:confused2: No?!:confused3:

longhairlimy · Mar 29, 2013

Have not picked up item yet,as dealer here does not have in stock. Ordered.Was doing bit more reading here and came across Another thread where the guy had about the same issues.His was fuel solenoid.Is there a way to test fuel solenoid?Will be playing with it today, Just think of how this unit affect's fuel. As stated how i test low pressure pump,i would say that is what is wrong.Always open to comment.

texasjohn · Mar 29, 2013

I had same symptoms...idle OK, die otherwise.
Fuel solenoid.....in my case, I disconnected its electronics...the wire connectors...and reconnected...instant fix.

My theory is a loose/dirty connector. Try it.

longhairlimy · Mar 30, 2013

Thanks for the idea,Tried it with no fix. Allso warmed her up to the point of it doing its thing and tried cool water on solenoid to see if it would cool to the point of working. NO.NOTHING. More thoughts please!!!

texasjohn · Mar 30, 2013

dunno re your specific model, but mine has a "limp" mode it goes into when things aren't right...this is what was happening to me with bad solenoid connection...internal computer realized that it would not have power to do any real work and shut down when asked to handle a load. Don't know all the situations that might initiate "limp" mode, if you have WSM, take a look there. Will search out my WSM and see what I can figure out that might apply to your case.

longhairlimy · Apr 6, 2013

Ok, changed the fuel solenoid today and ran the tractor hard for 2 hrs. Problem fixed.Will be taking the low pressure pump back as the dealer told me if i didn't need it bring it back.Wow, thanks to the guys that jumped in for the help. Total cost was $160.00.And some snorts of fuel...

David_Kb7uns · Apr 7, 2013

texasjohn said:
dunno re your specific model, but mine has a "limp" mode it goes into when things aren't right...this is what was happening to me with bad solenoid connection...internal computer realized that it would not have power to do any real work and shut down when asked to handle a load. Don't know all the situations that might initiate "limp" mode, if you have WSM, take a look there. Will search out my WSM and see what I can figure out that might apply to your case.

I would like to know what computer is going into limp mode? The intellipanel on the Grand L 30 series has no control of the engine other then the kill/run solenoid.

David Kb7uns