89 Johnson 150 V6 Tilt & Trim Sllllooooowww

[Devdog99]

Alright, here is the background before I get into the problem.
Bought an 89 Johnson V6 150. I have no idea what the model number is cause the plate is not there and the number on the freeze plug is unreadable.

In my venture to rewire this thing (previous owner snipped a lot of wires) I finally got the T&T working. Put in a new fuze, a new up and down switch at the engine and relays. I'm getting 12V at the right wire for up and down and it is grounded properly.

Now here is the problem. With one relay in, it will go in the appropriate direction at what I would say is the right speed. With both relays in it crawls into position. Plus the wires going to the T&T motor and the relays get hot enough that you can't even touch them. This is with or without the engine running and at either the motor or remote switch. The pump has hyd fluid in it.

I'm at a loss on what can be the problem. Can anyone help?!?!?!?

Secondary problem. I am hooking up new guages and am trying to find the T&T sender. I looked in the place I think it should be, (under the engine near the hyd lift) but there is nothing. There are black and white wires coming from the top of the T&T relay box that go nowhere, is this it?

Thanks in advance.

 

[Chris1956]

Re: 89 Johnson 150 V6 Tilt & Trim Sllllooooowww

It sounds to me like you are putting voltage on the up and the down windings of the motor at the same time. If that motor is a three wire type, the black wire is common and grounded. The blue wire gets voltage to go up, and the green wire gets voltage to go down. These PTT units have sloenoids like the starter solenoid.

The newer PTT motors are two wire. The relays switch the voltage on the two wires, to run the motor in the desired direction.

I will take a wild guess that you have the three wire PTT motor and are using the relays, instead of the solenoids. BTW some of the aftermarket PTT motors are two wire and replace three wire motors. They usually are sold with the new wiring harness and the relays.

 

[Devdog99]

Re: 89 Johnson 150 V6 Tilt & Trim Sllllooooowww

Thank you for your reply. I will check to see if I am getting stray volatage on the other wire.

To expand on what kind of T&T I have. It is a duel relay with black (ground) blue (up) and green (down) wires coming off the motor. The right relay is the up and the left is the down. I'm trying to do this by memory on which wire goes which way cause I'm not around the boat at the moment.

 

[ezeke]

Re: 89 Johnson 150 V6 Tilt & Trim Sllllooooowww

The purpose of the relays is to reverse the polarity depending on which way the switch is thrown. The green and blue wires running from the relay to the motor are alternatively negative or positive, depending on which. There should be no noticeable difference in speed up or down with a fully charged battery.

 

[Devdog99]

Re: 89 Johnson 150 V6 Tilt & Trim Sllllooooowww

Here's what I have after looking at it last night. Both relays are working in the proper direction and I am getting no stray voltage across the wires. Everything is grounded correctly. I am still trying to find out why the wires would get really REALLY hot when the trim motor is in operation and why it would be running so slow. As stated above, if I take out the relay not in use the motor will trim in the speed that it should. I have both relays in and it trims at a snails pace. Ideas?

 

[ezeke]

Re: 89 Johnson 150 V6 Tilt & Trim Sllllooooowww

How many wires enter the trim motor? If 3, the relay system that was supposed to come with your motor is for a two (2) wire motor. You can rewire the system or replace the motor with the correct one, but either fix is complicated.

If you want to check the part, you can see the two wire motor and part number in the parts catalog for your model here: http://epc.brp.com/default.aspx?brands=ej&lang=e