My 04 ford e350 AC isn't blowing cold air like it should...its cools down only on long hauls not in the city. Freon is in and the AC is "charged" whatever that means..

Asked by Sep 08, 2013 at 06:16 PM about the 2004 Ford E-Series Wagon E-350 Super Duty XL Ext

Question type: Maintenance & Repair

Some one suggested that the
vents underneath may be
clogged by debris. If so can I
clean it? Where would I look?

4 Answers

6,485

#1 - No debris in the duct work. #2 - The A/C system is designed to have a certain pressure with use of the R134(A). The "Freon/oil" mix lubricates the parts internally while operating. #3 - The Freon gas is heated in the compressor (due to normal compression action), then sent to the condenser to cool where it is sent to the plenum (inside the vehicle) and then back to the compressor to be re-compressed and repeat the system. #4 - I would check to see if the "air temperature control vacuum dash manifold" is broken and not allowing the correct operation with the dash air ducts. It is located just behind the dash knobs (they attach to it) which control "hot to cold, dash/floor/foot air direction, fan speed" settings. It is a common Ford issue for these to break after just a few years, as mine broke after just 3 years.

5 out of 5 people think this is helpful.
101,695

If cools good at highway speeds but not in stop and go traffic I would check the electric radiator fan. It should be running when ac is on and vehicle is idling. If its not running trouble shoot why. It must run when idling or in slow traffic or ac compressor will kick off due to too high of temp.

4 out of 4 people think this is helpful.
21,805

Typical AC System inspection: Debris in the Condenser/Radiator not allowing enough air flow - Fan Clutch failing to engage - Serpentine belt stretched/slipping, AC Compressor Clutch slipping, AC system low on Freon. One scenario is that the fan clutch has failed causing an over-pressure in the AC system and popping-off the over pressure valve causing a low Freon charge or, the High Pressure switch is doing it's job and shutting down the system because of high pressures. Either way, I'd look at the Condenser, Radiator, and Fan Clutch first.

3 out of 3 people think this is helpful.
10

DON'T USE 4 SEASON COMPRESSORS. HAD 3 UNDER WARRANTY AND ALL NEVER WORKED AS GOOD AS A USED MOTORCRAFT PUMP. NEVER COULD GET LOW SIDE UNDER 70 PSI AT IDLE. INSTALLED THE USED MOTORCRAFT AND IT WAS AT 35 PSI AT IDLE. 4 SEASONS JUST DOES NOT MAKE A GOOD PUMP.

1 out of 1 people think this is helpful.

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