Why does my power stering pump boil over after a race

The steering is controlled by the steering rack,
& they get stiff because no one changes the fluid
every 3 years

The upper strut bearings fail & make steering stiff

Doubt the pump was a problem at all

I would agree that you have a gearbox issue. I would have thought that something was wrong after the 2nd pump??

If power steering fluid is full, but the belt driven power steering pump's pulley doesn't turn at a good speed, then the power steering won't work properly. Check that the belt tensioner is providing enough belt tension for the power steering pump to do its job.

If the rack and pinion is bad, it may also cause a lack of power steering in your vehicle.

Good luck on this repair.

There are a few things to try:
1.) Check the power steering fluid, the level of the fluid will be on a rather short dipstick, and in most cases the power steering fluid container is on or around the cylinder head.
2.) The power steering pump is bad. The power steering pump has a pulley connected to it, and a belt which should go to other pulleys. The belt could be the problem as well. What happens is the belt moves the pulleys and allows the power steering fluid to be pumped through the steering system.
If the light is on, and you still have power steering I would say the fluid is low.

FIRST CHECK POWER STEERING FLUID.IF OKAY.CHECK POWER STEERING BELT TENSION.IF BELT TENSION OKAY.POWER STEERING PUMP GOING BAD.

Problems associated with low power steering fluid…

Hard Vehicle Steering
A low power steering fluid level can often times cause a vehicle's steering to become hard and labored. Adequate amounts of power steering fluid are necessary to enable a vehicle's power steering system to function and operate at optimum levels. A lack of power steering fluid in a vehicle's power steering system reduces the amount of hydraulic fluid pressure necessary to efficiently operating the various parts of the entire power steering system. Power steering fluid supplies the fluid force needed to operate the power steering gears and to enable power steering gearbox operation. Low power steering fluid levels reduce this hydraulic pressure, which commonly results in hard vehicle steering.

Pump Noise
It is very common for a low power steering fluid level to cause significant power steering pump noise. An adequate amount of power steering fluid is required to ensure the proper function and longevity of a power steering pump unit, which is a belt-driven pump responsible for housing and circulating power steering pump fluid. A low level of power steering fluid results in increased power steering pump friction, heat, and wear, all of which can significantly reduce the operational life of the power steering pump while at the same time cause excessive power steering pump noise.

Fluid Boiling
Many times a low power steering fluid level can result in excessive heating of power steering fluid, a condition that can seriously degrade the fluid and cause it to boil. A low power steering fluid level results in less available fluid to both lubricate and cool a power steering pump unit. A lack of power steering pump lubrication and cooling leads to excessive heat being generated within the power steering pump unit itself, a condition that translates into the available level of power steering fluid becoming super-heated and degraded. When this happens it is common for the power steering fluid to boil and lose all of its lubricating and heat-reducing capabilities.

Gearbox Wear
The power steering gearbox is a set of gears within a vehicle's power steering system designed to facilitate movement of a vehicle's front wheels. The power steering gearbox is connected to the power steering pump by hydraulic fluid lines that deliver a constant supply of power steering fluid to the power steering gearbox. A low power steering fluid level, especially a chronic and severe low power steering fluid level, can lead to increased friction and wear within the power steering gearbox assembly, a condition that can significantly shorten the operational life of the power steering gearbox and negatively affect its operation

check the power steering pump to see if the shaft broke. remove the belt and pull the pulley on the pump, it should not pull out of the pump. If it does you need a new pump

The steering sounds weird because the Power steering pump is starting to mix air into the fluid , it might make more noise turning than going straight. the places it most likely is leaking is the high pressure hose to the steering rack assembly , next would be the pump assembly , and the steering rack from there. the return line is more likely to have a seeping leak if any.

Hope this helps

Loosen 2 pivot bolts on back of pump, 13mm. then loose one bolt on bottom/front. Turn adjustment bolt on right side/bottom of pump to loosen belt. Once belt if off, remove all of the bolts connection pump to engine bracket. Remove hoses going to pump. Install new one, filled up with fluid. Now you have to bleed air out of sys. Move steering wheel left/right to the stops. Do this about 10 times either direction.

Yes it is the power steering pump, this is all to common on all Fords, you will need to flush the system until the fluid is clear and the replace pump, following bleeding instructions that come with new/rebuilt pump. If you don't flush out the old fluid the new pump will fail again.