[Evan Vanhorne]

PLEASE PLEASE HELP ME!!!!!! so my 7.5 poly plow has been acting up. The plow and motor act like I’m holding down the button after I’ve let go. Once it moves as far over/up as it can go it locks in and runs the motor and pump as if I’m holding the controller buttons. I just spent 350 on a new controller and it fixed the problem for about 2 weeks, after the big snowfall in the Midwest this week the problem has come back the exact same way. I’ve changed the controller, solenoid, and plow side 9 pin harness. Some posts I’ve read have mentioned bad relays and grounds. If anybody has any ideas or has dealt with the same issue before please let me know, I really don’t want to have to start buying new wire harness parts for something I’m sure is simple.

 

[cwren2472]

What solenoid did you buy to replace the old one?

 

[Evan Vanhorne]

What solenoid did you buy to replace the old one?

Spoiler alert: I already know the answer...

Truck side, had no idea there was more than one solenoid. Not the greatest with electrical. Also first year plowing with my own equipment haha.

 

[cwren2472]

Truck side, had no idea there was more than one solenoid. Not the greatest with electrical. Also first year plowing with my own equipment haha.

No, I meant what specific piece did you purchase and where did you buy it?

Do you have a photo of it?

 

[Evan Vanhorne]

No, I meant what specific piece did you purchase and where did you buy it?

Do you have a photo of it?

 

[Evan Vanhorne]

View attachment 189552

oreillys

 

[Western1]

Most likely that solenoid is bad even though it’s new or newer!

 

[Evan Vanhorne]

Most likely that solenoid is bad even though it's new or newer!

I've hooked multiple up at this point. They all do the same. Going to redo the grounds on the solenoid now, If not that I guess I'll get another power cable since this one I guess looks a little funky. I'm at a loss, pretty disappointed

 

[cwren2472]

Hmmm, not what I was expecting. If it is doing it consistently, try unplugging the controller and see if it shuts off. It probably won't.

The other possibilities are a second bad solenoid, which is almost always the issue, but that solenoid appears to be an correct non-crappy one. It would be unusual for that one to fail that fast, but not impossible.

Last thing, you seem to have some sketchy connections going on and there is a chance that the spot highlighted below is touching the hot lead causing the solenoid to stay running. Not likely, since it's a ground wire, but something I would check anyway.

 

[cwren2472]

Silly question, but why is one of those big wires black?

If you have access to a test light, you'd want to test that small wire on the left for power when it's running and you aren't pressing the control. That will tell you if it is getting powered by some other wire inadvertently cuz the harness is damaged somewhere.

 

[Evan Vanhorne]

Silly question, but why is one of those big wires black?

If you have access to a test light, you'd want to test that small wire on the left for power when it's running and you aren't pressing the control. That will tell you if it is getting powered by some other wire inadvertently cuz the harness is damaged somewhere.

Cable running to positive battery

 

[cwren2472]

Incidentally, if unplugging the controller DOES cause it to shut off, then the controller is defective. The chances of that are extremely low, unless there is damage to the control harness shorting it out which is possible.

 

[Evan Vanhorne]

Doesn’t stop when unplugging controller. And yea controller loom is what I was also thinking

 

[Western1]

Do you have the old controller?

 

[Randall Ave]

Make sure all the battery connections are clean, do not assume. Does the new solenoid say Trombetta on it? If not, it's a knock off part. Is this intermittent or every time

 

[Evan Vanhorne]

Do you have the old controller?

Make sure all the battery connections are clean, do not assume. Does the new solenoid say Trombetta on it? If not, it's a knock off part. Is this intermittent or every time

I do

Do you have the old controller?

Do you have the old controller?

I do

 

[Evan Vanhorne]

Make sure all the battery connections are clean, do not assume. Does the new solenoid say Trombetta on it? If not, it's a knock off part. Is this intermittent or every time

Solenoid does not say trombetta. It was working great until yesterday after about 40 hours of plowing was done with it this week.

 

[Western1]

Like C said. Test light on solenoid. Also if you think a power cord is suspect you can use jumper cables to test that. But still something causing power to continue to motor after controller disengaged

 

[cwren2472]

Solenoid does not say trombetta. It was working great until yesterday after about 40 hours of plowing was done with it this week.

Can you post a picture of the tag on it?

 

[Philbilly2]

Does the new solenoid say Trombetta on it?

Gentlemen... place your bets...