2000 300m valve cover removal

remove the ac compressor without disconnecting the hoses and the electrical lead and shift the entire thing out of the way. thereby preserving the freon charge

Kia Sedona expansion FRONT valve located under dash, behind glove box, fan and coil. Evacuate freon first. Disconnect Freon lines from firewall., Lay right front seat back to flat horizontal position and lay on top or totally remove the seat for easier working access. Remove under dash cover, fan, glove box, coil housing, remove coil mounting bolts, remove old expansion valve. (Inspect old valve, if debris inside, blow out coil before installing new valve. If visible debris best to consider replacing REAR expansion valve and DRIER/FILTER in front of radiator too and blow out all lines and coils while servicing.) Use compressor oil to lubricate "O" rings on new FRONT or REAR expansion valve, install valve bolts, reinstall coil bolts to FRONT firewall or REAR frame, reconnect freon lines to firewall in engine compartment. Evacuate AC system, install freon (35 1/2 ounces, nominal 3 pounds), check system for leaks, check for proper operation, enjoy.

Hi, the low pressure service gauge port valve is located on the manifold of the A/C compressor manifold and tube assembly at the A/C compressor Remove the plastic cover and view the picture below...

1. starting with the RIGHTside valve cover, disconnect the crankshaft sensor connector then the a/c compressor connector and the ac cycling switch connector.
2. release fuel preasure and disconnect lines. remove the connections for the fuel injectors and the ignition coils,remove the pcv tube and move of to the side,
3. remove the evap purge valve and repostion the holddown clamp for it,remove the bypass tube.
4. disconnect harness from valvecover and postion out of the way, now remove the studs,nuts and valve cover .REVERSE DIRECTIONS TO INSTALL,
5. NOW LEFTSIDE.
6. Remove oil sensor connector, next remove the brake booster asmbley.
7. remove cylinder head temp sensor jumperwire connector.
8. remove bolt and to studs for power steering resivior and braket and sit aside.
9. disconnect camshaft sensor connector.
10. disconnect connectors from coils and injectors,
11. remove the wiper cowl and then the42 pin connector and 16 pin connector and trany connector.
12. remove the 6bolts and 5 studs from valve cover and off with the cover, rev directions to install.
13. NOTE; CLEAN VALVE COVER AND HEAD SURFACE WHERE GASKET WILL SIT, THEN APLLY THIN COAT OF SEALANT TO COVER AND PUT GASKET ON AND LET SIT FOR 5 MIN, THEN APPLY THIN COAT TO GASKET TO MATE WITH HEAD. .

HOPE THIS IS HELPFUL, GOOD LUCK AND HAVE A NICE DAY.

Above solution is correct, had the same problem with mine and it was the expansion valve.

pls. check your ac compressor magnetic clutch attached in front of ur compressor if its working/ ac clutch engage when u turn the ac switch on and disengage when u turn the ac switch off/ it normally makes a clacking sound when it engage with the rotation of ur compressor/ if its not engaging it means ur magnetic clutch is stuck up giving excessive load to ur engine thats why it overheats/ it smell burnt because its magnetic coil is fried/ or check cooling system of ur car might be that coolant is empty/ fan is not working/ radiator is clogged or thermostatic valve is stuck blocking coolant flow....

if they are talking about the a/c expansion valve or h-valve,it could be stuck not allowing refrigerant flow..it can be replaced..it is located behind engine on passenger side at firewall..would recommend a professional to service your a/c system..this part may be available at your local parts dealer

ON these you do need to remove the a/c compressor. You do not need to undo the hoses but unbolt the compressor and set it asside out of the way. Be vary careful in doing this so not to break the hoses or anything else. You may have to remove the a/c brackets as well. Just remember how they come apart so you can put them back. Let me know how you did. and if you need more info. Please leave feedback.

You find the AC low pressure at the top of the compressor, orientated toward you , facing the front of the vehicle. You can also follow the compressor line to reach the port.

The valve is covered a plastic cap covering it.
Near the compressor you find two ports, the high port and low port.

To find out which one is the low port, run the air conditioner for a couple of minutes withthe engine on.
Then turn off the care and touch the lines from compressor to the two ports covered with plastic caps. Only one of the pipes will be cold, the cold line will lead you to the low port.

Regards.

The AC charge port is the on low pressure AC line (large line from compressor) near the firewall. Take care not to overcharge, there are other causes of no cooling like a stuck AC compressor cycling switch or a air temp control blend door motor malfunction, what is the issue u have? does the AC compressor run?