1991 FJ80 3fe - power steering loss/fade

[drpotatoez]

Hello,

Recently my power steering went away. It works fine at idle in the morning when engine is cold and at a stop, but as it starts to warm up, the power steering goes away.

I have flushes the system with new power steering fluid, replaced the pump from a donor fj80 that had a working power steering, replaced the reservoir from that same donor vehicle.

Don’t know what else to do. I don’t have a squealing or noisy pump,

Keep in mind im running w 6 inch lift with 35x12 tires. When I bought the tires, a few months later when turning at slow speed the power steer would jitter, like on and off constantly. Now it doesn’t work at all once engine is warm

Any advise?

 

[jonheld]

First thing to check is the belt tension and condition. The stuttering PS is something I've dealt with and it was the belt slipping under load.
On the 3FE, the tensioner pulley for the PS pump decreases the wrap on the PS pulley as the tension of the belt increases. Not an ideal setup.

 

[Two 3FEs]

First thing to check is the belt tension and condition. The stuttering PS is something I've dealt with and it was the belt slipping under load.
On the 3FE, the tensioner pulley for the PS pump decreases the wrap on the PS pulley as the tension of the belt increases. Not an ideal setup.

Anyone know or have link to power steering pump replacement? I have the good one from the '92 to replace on the '91. thnx