Engine RPM wont come down

Cooter143 · Sep 12, 2014

I have a Ford 5600 that tends to idle high once its warm. But today after moving for an hour or so the RPMs kept increasing and I had to use the fuel shutoff to bring it back down. I was able to mow by keeping the fuel shutoff out just a little, but if I pushed it all the way it the engine would rev back up to 2500-2500 RPM. What is causing this?

Alan K · Sep 12, 2014

Is it a gasoline or diesel model? If it is a diesel model, depending on the type of pump they use it could be the governor in the injection pump.

souNdguy · Sep 12, 2014

since he said fuel shut off.. i'm going with diesel.

not sure if that has a inline or rotary pump.. but i have seen stuck racks make them go full out.

Cooter143 · Sep 12, 2014

Its a diesel, and it kind of acts like the governor isn't working. When it bogs down in the thick stuff the governor doesn't seem to be compensating. The grass kept the RPMs close to 2300 but when I would turn around in the cut area it would speed up and I'd have to ease out the shut off.

Allan in NE · Sep 12, 2014

Plugged fuel filter.

Allan

Cooter143 · Sep 12, 2014

I hope that's it, it is the only filter I haven't changed. When I changed the air filter, it was stamped 1979!

Engine RPM wont come down

Cooter143

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Alan K

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souNdguy

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Cooter143

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Allan in NE

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Cooter143

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