Freon restriction on a 1994 ge monogram fridge. Cap tube and drier has been replaced. Nitrogen flows through cap tube when disconnected. system does not equallize after shutdown. High side pressure is 200 and low side is at 0. Where or what could be restricted in this system

low on freon

Your looking at a Job that takes about 4 to 5 Hours of labor. Reclaim machine,Vacuum pump, Torch, Silver Solder, Freon, Nitrogen,Liquid line drier, Possible suction line drier if it was a shorted compressor windings. New start components. and then maybe a cap tube depending on what caused the compressor to fail. So with that said you can expect to spend $1500 to $2300.

Hi,You have a restriction and will need to remove it so the unit will function correctly. Use a strong vacuum over night too clean and dry out the system. Sometimes this works, other time I use nitrogen to clear the restriction, it's a pain and extra work but a very clean system when done. I hope this unit is yours, it can be costly to a consumers to cover you time.
Good Luck

I’m happy to help further over the phone at https://www.6ya.com/expert/gere_bf68e6055dd61249

Tell him to remove the strainer, remove cap tube, blow out system with nitrogen, install new strainer/ filter drier, install new cap tube and charge, you should be as good as new. Hope this helps.

Hello Sometimes there is a SCREEN in the liquid line just b4 the piston in the tube.You had a SEVERE burnout the filter driers are shot from doing there job even with the short run time.Also you could try pulling the piston out and blow out the cap tubes in the evap.Close the suction service valve and pressurize the pipe and let it blow out the piston holder ot help clear those tiny tubes.Use a OVERSIZE liquid drier this time,Get a 10 ton drier or better.

High suction pressure is telling you there is a blockage in the coolant system usually. It most often occurs at the drier. If the drier is clogged it will cause the symptom you describe. This may sound crazy but take two wooden handles (hammers whatever) but WOOD and strike the drier simultaniously. (I.e at the same tame with the handles. Don't be afraid to give it a good whack.. just don't dent it or the lines. It may or may not snap out of it. Additionally the capillary tube can cause the exact same symptom. You have coolant flow.. just not enough.

You may sadly have to have to system bleed off (recaptured coolant) and purged until restriction vanishes with nitrogen if you can not find the current restriction. These can be real easy or a nightmare there is no in between.

Thanks for choosing FixYa.

Kelly

DTC P1455 - Substantial Leak or Blockage in Evaporative Emission Control System

The PCM monitors the complete EVAP control system for no purge flow, the presence of a large fuel vapor leak or multiple small fuel vapor leaks. The system failure occurs when no purge flow (attributed to fuel vapor blockages or restrictions), a large fuel vapor leak or multiple fuel vapor leaks are detected by the EVAP running loss monitor test with the engine running (but not at idle).

Check this possible causes:
After-market EVAP hardware (such as fuel filler cap) non-conforming to required specifications
Disconnected or cracked fuel EVAP canister tube, EVAP canister purge outlet tube or EVAP return tube
EVAP canister purge valve stuck closed
Damaged EVAP canister
Damaged or missing fuel filler cap
Insufficient fuel filler cap installation
Loose fuel vapor hose/tube connections to EVAP system components
Blockages or restrictions in fuel vapor hoses/tubes (items also listed under disconnections or cracks)
Fuel vapor control valve tube assembly or fuel vapor vent valve assembly blocked
Canister vent (CV) solenoid stuck open
Mechanically inoperative fuel tank pressure (FTP) sensor


Check for audible vacuum noise or significant fuel odor in the engine compartment or near the EVAP canister and fuel tank

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Sounds like you have a clogged cap tube. Yes they should both be sweating, I would expect your low side pressure to be lower though unless it is real hot in the camper. You can replace the tube but make sure what goes in is the same diameter and length because that is all engineered for proper metering into the evaporator.

P0455 - EVAP Control System Leak Detected (No Purge Flow or Large Leak) The PCM monitors the complete EVAP control system for no purge flow, the presence of a large fuel vapor leak or multiple small fuel vapor leaks. The system failure occurs when no purge flow (attributed to fuel vapor blockages or restrictions), a large fuel vapor leak or multiple fuel vapor leaks are detected by the EVAP running loss monitor test with the engine running (but not at idle).

• After-market EVAP hardware (such as fuel filler cap) non-conforming to required specifications
• Disconnected or cracked fuel EVAP canister tube, EVAP canister purge outlet tube or EVAP return tube
• EVAP canister purge valve stuck closed
• Damaged EVAP canister
• Damaged or missing fuel filler cap
• Insufficient fuel filler cap installation
• Loose fuel vapor hose/tube connections to EVAP system components
• Blockages or restrictions in fuel vapor hoses/tubes (items also listed under disconnections or cracks)
• Fuel vapor control valve tube assembly or fuel vapor vent valve assembly blocked
• Canister vent (CV) solenoid stuck open
• Mechanically inoperative fuel tank pressure (FTP) sensor

Check for audible vacuum noise or significant fuel odor in the engine compartment or near the EVAP canister and fuel tank. ----------------------------------------------------------------------------- HX43 DTC P0457: CHECK FOR MISSING OR LEAKING FUEL FILLER CAP

• Check for missing fuel filler cap.
• Check for loose fuel filler cap.
• Check for possible cross-thread fuel filler cap condition.

Is a fault present concerning the proper installation of the fuel filler cap? Yes No REPLACE cross-threaded or damaged fuel filler cap. RECONNECT and TIGHTEN the fuel filler cap only one eighth turn so that the cap initially clicks by sound or touch. CLEAR Continuous Memory DTCs. COMPLETE an Evaporative Emission Running Loss Monitor Repair Verification Drive Cycle (refer to Section 2 , Drive Cycles). RERUN Quick Test . If DTC P0455 or P0457 is present, Go to HX44 . CLEAR Continuous Memory DTCs. COMPLETE an Evaporative Emission Running Loss Monitor Repair Verification Drive Cycle (refer to Section 2 , Drive Cycles). RERUN Quick Test .

For DTC P0455 still present: Go to HX44 .

Otherwise, INFORM the vehicle owner that it is important and necessary to immediately install the fuel filler cap after every refueling event. HX44 DTC P0455: VISUAL INSPECTION FOR SUBSTANTIAL EVAPORATIVE EMISSION SYSTEM LEAKS

• Check for missing fuel filler cap. If the cap is loose DO NOT DISTURB EVAP system.
• Verify that both the input port vacuum hose and EVAP return tube are attached to the EVAP canister purge valve. Note: If the EVAP canister-CV solenoid assembly is not accessible during this pinpoint test step, GO to Evaporative Emissions, Section 303-13 in the Workshop Manual for removal and installation instructions.
  
• Verify that the CV solenoid is properly seated on the EVAP canister (if possible).
• Visually inspect for disconnected or cracked fuel vapor hoses/tubes between the intake manifold, the EVAP canister purge valve, the EVAP canister, the fuel vapor vent valve assembly and if applicable the fuel vapor control valve tube assembly.
• Check for damage to the fuel filler pipe and the fuel tank.

Is a fault indicated? Yes No CONNECT or REPLACE fuel vapor hoses/tubes as required. REPLACE damaged EVAP system components (fuel filler pipe, fuel vapor vent valve assembly, fuel vapor control valve tube assembly, EVAP canister purge valve, FTP sensor and EVAP canister-CV solenoid assembly) as necessary. REFER to Evaporative Emissions, Section 303-13 in the Workshop Manual for removal and installation instructions. GO to HX45 . GO to HX45 . HX45 DTC P1443 and P0455: CHECK FOR EVAPORATIVE EMISSION SYSTEM LEAKS

Note: When checking for leaks or blockages in the EVAP system, energize (close) the canister vent (CV) solenoid through the scan tool for a maximum of nine minutes per pinpoint test step. Then de-energize the CV solenoid prior to performing the subsequent pinpoint test step. This is done to assure proper closing of the solenoid.

• Disconnect and plug the EVAP return tube (EVAP canister purge valve to intake manifold) at the intake manifold vacuum source.
• Connect scan tool.
• Key on, engine off.
• Access VPWR PID. If the voltage is not 12 volts or greater, GO to HX61 .
• Locate evaporative test port [marked EVAPORATIVE SERVICE PORT DO NOT USE UNREGULATED PRESSURE ABOVE 6.89 kPa (1 PSI)] near EVAP canister purge valve or EVAP canister.
• If vehicle is not equipped with the evaporative test port, GO to HX50 .
• Install the Rotunda Evaporative Emission System Leak Tester 310-F007 (134-00056) or equivalent at the evaporative test port.
• Close CV solenoid by accessing Output Test Mode on the scan tool.
• Select ALL OFF mode and push START button.
• Regulate the nitrogen or argon gas pressure on the tester to 3.48 kPa (14 in-H 2 O).
• Follow the instructions that come with the EVAP System Leak Tester and pressurize the EVAP system.
• Perform the EVAP system leak test.

Does the pressure on the EVAP system stay above 1.99 kPa (8 in-H 2 O) and pass the leak test? Yes No GO to HX46 . REMOVE the EVAP System Leak Tester from the evaporative test port and REINSTALL the test port cap. GO to HX50 .

The True TSSU-60-16 uses an oversized (134A) refrigeration system with air flow directed at the pans.... if the capillary tube is plugged it will NOT cool at all.. most of the time a restriction (plug) is at the drier where the capillary tube goes into it.. as it is smallest passage in the system...hope it helps