A/C blows the receiver/dryer off the evaporator connection, I thought at first it was building to mush high side pressure due to fan clutch seized and condenser beat up not getting good air flow, but those have been replaced. Just went to start truck after it sat for 20-30 minutes and it blew again, when it's working air blows ice cold. Was going to put gauges on while not running to see if pressure equalized between high/low sides but that will have to wait.

Need to have the pressure readings to see what's going on.  Also, there is a high pressure switch which opens between 450-490psi and closes 270-330psi.

 

 

18 minutes ago, IBMobile said:

Need to have the pressure readings to see what's going on.  Also, there is a high pressure switch which opens between 450-490psi and closes 270-330psi.

 

 

 

Just now, Blueox01 said:

 

Seems like awful high pressure , mine at running was about 150/45 at 79 degrees ambient temp.

Do you still have the clips that hold the lines together?

Edited July 23, 20195 yr by dripley

13 minutes ago, dripley said:

Do you still have the clips that hold the lines together?

 

Just now, Blueox01 said:

 

Yes, but the lip for the spring to latch around has been flattened out, have the dash out now to replace the evaporator, had dash out 10 days ago to replace the heater core, so I got the procedure down.

Maybe thats wny it is blowing off.

31 minutes ago, dripley said:

Maybe thats wny it is blowing off.

I hope that's the reason.

5 hours ago, Blueox01 said:

Seems like awful high pressure

Those pressures are for the over pressure safety switch not the running pressure.

 

5 hours ago, Blueox01 said:

mine at running was about 150/45 at 79 degrees ambient temp.

That falls in the normal range. I think @dripley and you are on to something with that connection and spring. 

I've got a whole bag full of the locking springs for that purpose. Typically you can buy a o-ring kit for like $7 dollars and usually have a few locking springs in the kit. Double check the fittings too. Female side without the lock should have a good curled lip for the spring to grab.

4 minutes ago, Mopar1973Man said:

I've got a whole bag full of the locking springs for that purpose. Typically you can buy a o-ring kit for like $7 dollars and usually have a few locking springs in the kit. Double check the fittings too. Female side without the lock should have a good curled lip for the spring to grab.

Yea, missed that until now, it's been clicking on(could hear spring click) but the lip has been flattened out. I think it's just been connected/disconnected too many times.

12 minutes ago, Blueox01 said:

Yea, missed that until now, it's been clicking on(could hear spring click) but the lip has been flattened out. I think it's just been connected/disconnected too many times.

 

Time to replace that piece.

Yep, that's why the dash is out, last time I was time restricted, this time I'm going to replace door foam. Was going to get some adhesive remover to get the old foam off, hope that will work.