This is a long thread and getting hard to follow. Has reheating been eliminated? Those pressures are too high. Clamp off the heater hose. Are there under hood components too close to exhaust components, if so insulate them. Is the low side line insulated? Dual evaporator system is going to run ~50-...

On a side note, no oil would drain from the old compressor, as in not a single drop even turning the pulley. However, I drained about 8 oz out of the old receiver/dryer. Total system spec including compressor is 11oz. Eight ounces of oil came out of the old R/D and none from the compressor? Oh, my ...

Sounds like you made good headway. Fan install also looks good. Almost like they should have been there from the factory. I have both of my fans on the bottom rows of the condenser vs your offset mounting. Probably tomato vs tomatoe but I made the assumption the condenser was hottest at the top and ...

Orifice tube should be in the evaporator inlet. I have had probably a dozen of the Express/Savanna systems apart and same difficult as heck place to get at location for all of them. I say difficult because they love to stick and it is hard to get a puller on the tube where the line sits in regard to...

I just dug into the Ford catalog. Looks like the OE rear expansion valve is an H block. Ignore what I said about the capilary as it does not apply. That being said if it is not an OE expansion valve, get one and try it first before you spend days chasing this ac cooling ghost. The pressures definite...

Microtube parallel flow is going to cool the best for a given condenser dimension. A subcooling model would work even better but it is hard enough to find a proper dimension microtube parallel flow for older vehicles as it is. Your pressures sound like what my Express van did when the flat out wrong...

Lot of assumptions there Chris. My intake picks up air from the same place the condenser gets it - in front of the core support. The mainly plastic intake tract heat soaks a small amount. Idling in traffic surrounded by other vehicles blowing out 150+f air from their heat exchanger stacks raises th...

One other thing I swear by. ICE32 additive and I have been using it for 20 years now in everything I touch. I personally watched 2oz of the stuff injected into my at the time basically new 2002 Ram with an oil injector while the system was in operation drop the head pressure nearly 25 psi within 5 m...

I had to take mine again a while back merely to be able to have the auto parts stores sell it to the delaership parts department I worked in. It was crazy that we had multiple certified technicians working with it but since it was sold to the parts department someone in the parts department had to b...

I am assuming this is a raised roof van to be having this much difficulty keeping it cool in such modest ambient temos. If the system is still not adequate, research and find out if a company offers a refer unit setup or 2nd compressor setup for a school bus or shuttle bus application for that engin...