Will automatic transmission fluid hurt a power steering pump of 1992 ford explorer?

Yes, using automatic transmission fluid (ATF) in a power steering pump designed for power steering fluid will likely damage the pump. While both are fluids, they have different chemical compositions and properties. ATF is not designed to lubricate and protect the seals and components of a power steering pump in the same way that power steering fluid is. Using ATF can cause:

* Seal damage: ATF can degrade the seals within the power steering pump, leading to leaks.

* Pump damage: The different viscosity and frictional properties can cause increased wear and tear on the pump's internal components.

* Reduced performance: The pump may not operate as efficiently, leading to poor steering response.

In short, stick to the recommended power steering fluid specified in your 1992 Ford Explorer's owner's manual. Using the wrong fluid is almost always a bad idea.