ice in the A/C vent!!!

[JIM S.]

Gottcha.....





hope this gets more attention than it did in the 1st gen forum

my bro has a 93 CTD and his A/C works great..... then it doesnt for a while... . then it heads again, very inconsistant... any ideas?

Jim

 

[emarsh]

Im not an A/C man, but I believe this usually means the system is overcharged.

 

[JohnMcIntyre]

Got some good feedback here....

I had a query on aircon recently and got some pretty good information back in this TDR thread, which may prove useful.....

 

[Gary - K7GLD]

ACTUALLY, Ice forming on portions of the evaporator is USUALLY a sign of LOW freon - there should be a small view glass somewhere in the system, usually on top of the accumulator - a cylinder usually towards the front of the vehicle - and with the engine running and AC on, there should be VERY few bubbles visible flowing in the freon stream - if there are LOTS of bubbles, or so much air in the system that NO flow is detectable, you got a problem...

 

[B.G. Smith]

AC problems

A problem I have I have seen in the older Chrysler AC where they have the aluminum block type metering valve is that after they have been is service for several years the dessicant in the dryer breaks down and plugs the orifice in the expansion valve. This might account for the "works sometime" as when the unit cycles off the back flow of refrigerant might sometimes clear the orifice for a while. Have to evacuate the system and replace the dryer and clean the exp. valve. bg

 

[DMalone]

Ice on evap is a sign of a low charge. Clean the evap and charge back so the suction line is sweating all the way back from the evap to the compressor. I would bet the suction line doesnt have any sweat on it as is. good luck