Prochem PTO only Idles.

[Total Perfection Cleaning]

Hi All, I am having trouble diagnosing My Prochem PTO. Just yesterday I was at a job and the machine would not go into High or low RPM, it just stayed idle.
I have water pressure and suction but the suction is not as much as it would be in High or low RPMs.

Has anyone encountered this before and could give advice.

Thank you
Troy

 

[OxiFreshGuy]

Check the connection under your dashboard, the part that plugs in to talk to your van engine, even if it's just a little loose it may not engage.