first check Power Steering fluid,if to low then air is inside causing noise or p.s. pump is bad.
A 1990 Nissan pickup truck has power steering. If the truck is displaying symptoms of not having power steering check the fluid levels and pump itself.
How does one change a power steering belt on a 1997 nissan pickup?
Disconnect the low pressure line
look at top of steering wheel column.
These directions are for a 240. They may help you understand what you are in for. http://importnut.net/steeringswap.htm
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The fast idle-speed on a 1994 Nissan D21 pickup is adjusted by turning the screw on the side of the throttle body. It increases the speed of the engine when the vehicle is idle before completely warming up.
I have a 1997 Nissan 2wd pickup with an automatic transmission and 4 cylinder. The thermostat is located on the lower radiator hose under the power steering pump.
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The fast idle-speed on a 1994 Nissan D21 pickup is adjusted by turning the screw on the side of the throttle body. It increases the speed of the engine when the vehicle is idle before completely warming up.