Same compressor, same clutch - either TXV or CCOT. I used the CCOT as a common example of a system that will cycle the clutch for it's entire life.

You seem to be obsessed with the cycling. It has probably done this since new. If it bothers you, turn on the rear system.

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Rapid cycling can happen with any CCOT system in the right climate conditions. It does not hurt anything, and the compressor / clutch is designed for cycling. The solenoid valve in your system shunts all of the refrigerant flow to the front TXV when closed. I would expect cycling on front operation ...

The short answer is "Yes". Systems can cycle repeatedly without issue.

Do you have Item #16 as shown on page 87-50?

The refrigeration system is working just fine. It produces predictable pressures & temperatures, and the freeze switch works as advertised. The only time you saw a 19 psi low side was with the freeze switch disabled with a jumper wire. A useless thing to do. The clutch is supposed to cycle off t...

Most of those charts are vehicle specific, as published in the FSM for the vehicle. Over the years, people have copied those carts and presented them as universal. With systems varying wildly, from CCOT to TXV, POA valves, Variable displacement compressors, etc. there is no one set answer. Add in cl...

Weird. Almost like the clutch is not engaging?

LOL I have seen $100 SnapOn connectors fail to depress out of spec Dodge service port valves. The last 5 people that used that loaner tool probably had no trouble at all. What you have in that system right now is a mess. It was never evacuated, and now has a mix of non-condensable gasses and some re...

A TXV requires some sort of freeze protection. The low side cycling switch from the orifice tube system will do just fine.

Swap the OT for a TXV. Keep the cycling switch. Add a receiver dryer to the liquid line.

If the vehicle was equipped with a freeze switch on the evaporator, then it never had a variable displacement compressor. The two systems are mutually exclusive.

Common fault is service connectors that are not depressing the Schrader valves on the vehicle fittings. You evacuated the manifold & hoses. Then you charged the manifold & the hoses. A little bit of refrigerant will slip past a closed Schrader valve, so some pressure may have entered the sys...