A/C Question - Diesel Truck Forum - TheDieselGarage.com
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post #1 of 5 (permalink) Old 08-30-2014, 01:10 AM Thread Starter
03 f350 xl 7.3 2wd x-tend
 
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A/C Question

Been awhile, but my 2003 F-350 has A/C issues. Used to be that when it idled for a while, or a lot of stop and go the A/C would shut off and blow hot. Usually on e you got going and got the air to flow over the radiator AC would kick back on, and I would notice the needledrop just a hair. So, I figured it was the fan clutch. Change that out, now the AC seems to go off whenever it wants. My wife made a 40+ mile run said it was sporadic when AC would work. I hopped in about an hour after she got home, drove it for 10 miles AC never came on. Any ideas?

03 f350 7.3l x-tend cab 2wd
& 1993 F-350 7.3L CREW CAB 5SPEED

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post #2 of 5 (permalink) Old 08-30-2014, 01:43 AM
Stuck in Commiefornia...
 
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Have you cleaned the A/C condenser? Pull the grille and wash/blow it out. They get packed with bugs, weeds, dust, and sometimes other junk like feathers. If air can't flow through it, it also blocks the intercooler and radiator, which will raise EGTs and coolant temps and overwork the fan clutch. And if the fans are all bent over and closed off that's bad too.

The other possibility is that you've got an A/C compressor clutch that's going out. If you're not really up on servicing these systems, sometimes it's worth taking it to a pro.

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post #3 of 5 (permalink) Old 08-30-2014, 04:06 AM Thread Starter
03 f350 xl 7.3 2wd x-tend
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I've done it compressor clutch on my 93. I'll try giving the condenser a try, I did notice a lot of fine looking dust inside the fan housing on the backside. So I live on a dirt road, so I may be having a lot of dirt in that condenser. I'll give it a try, thank you! And I'll keep you posted.

03 f350 7.3l x-tend cab 2wd
& 1993 F-350 7.3L CREW CAB 5SPEED

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post #4 of 5 (permalink) Old 08-30-2014, 04:13 AM Thread Starter
03 f350 xl 7.3 2wd x-tend
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Also forgot to mention, while my son was at baseball practice I went out to the truck and fired it up The AC compressor clutch was acting very erratic. Did look like it was holding good but it was turning on and off very quickly. Then after about a minute it clicked on and stayed on like it should. I ran around felt the air coming out of the vents, very cold. After baseball practice drove to the store blew cold the whole way. Then drove from the store to home, about five minutes, blew cold the whole way home.

03 f350 7.3l x-tend cab 2wd
& 1993 F-350 7.3L CREW CAB 5SPEED

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post #5 of 5 (permalink) Old 09-01-2014, 11:37 PM Thread Starter
03 f350 xl 7.3 2wd x-tend
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Hosed out the condenser and radiator and ac seems to be good.

03 f350 7.3l x-tend cab 2wd
& 1993 F-350 7.3L CREW CAB 5SPEED

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