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2002 excursion a/c nightmare of 7 years

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Old 07-26-2014, 06:59 PM
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2002 excursion a/c nightmare of 7 years

So I bought my excursion 7 years ago. Since then the a/c has sucked. Been to 3 ford dealerships, multiple repair shops and my a/c instructors in automotive college have all looked at the truck including myself. The a/c has always been cool in the summer, freezing cold at night, freezing cold on the interstate, freezing cold in the winter. Pressures are as follows. Ambient 95 deg humidity 62%. At idle 51 psi low 217 psi high compressor does not cycle. 1500 rpms low 45 psi high 265 psi compressor does not cycle.

A little info on my system. Last winter the compressor and clutch, evaporator(front ac), accumulator, fot(yea it's the right color), and condenser were all replaced with oem ford parts bought straight from my local dealer. Also all the low side a/c lines were wrapped in foam. Ambient was in the 40's at the time. Couldn't get the right amount in the truck. Summer comes and top it off properly. Still the same problem. I've had excuses from multiple shops tell me it's cool air because the truck is black. Obviously false statement. My father has the identical truck (black) but gas 2wd and 2 years newer. His ac is ice cold all the time. He has to turn it down cause it's too cold.

What else could me and all the shops be missing for 7 years? I'm almost to the point of selling my baby cause I can't deal with the crappy ac another summer.
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2002 ford excursion 7.3 diesel 4x4 mbrp 4'' SS, afe stage 2 with zoodad mod, John woods valve body, +8 deep trans pan, 6.0 trans cooler,04 Lariat wheels w/ black painted windows, ebc greenstuff, x-codes, mod b-codes, amp power steps, mean green alternator, ranchhand grille guard, and one badazz sound system.
2002 Ford F-250 crew 4x4 riff raft thermo housing 7.3 350k miles and counting
2001 ford ranger 3.0 2wd xlt ext cab
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Old 07-27-2014, 06:52 AM
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Does that vehicle heating/cooling system use the same blend door arrangement as so many other Ford's do? Between that part and the dash mounted temp control I'd look there.

I did the same sort of swap minus evaporator on my 2000 E250, get about 40* leaving air temps at the vents, 65 MPH 90*+ days.
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Old 07-27-2014, 06:57 AM
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Does your Exc have the valve in the coolant lines to shut off coolant through the heater core in MAX A/C? Does it work?

What is the actual outlet air temp (center vent, high speed, temperature stabilized, 1500 RPMs) as measured with a thermometer?
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Old 07-27-2014, 09:25 AM
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Quote:
Originally Posted by JWA View Post
Does that vehicle heating/cooling system use the same blend door arrangement as so many other Ford's do? Between that part and the dash mounted temp control I'd look there.

I did the same sort of swap minus evaporator on my 2000 E250, get about 40* leaving air temps at the vents, 65 MPH 90*+ days.
Eatc doesn't display any code so I assumed that end was all good.
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2002 ford excursion 7.3 diesel 4x4 mbrp 4'' SS, afe stage 2 with zoodad mod, John woods valve body, +8 deep trans pan, 6.0 trans cooler,04 Lariat wheels w/ black painted windows, ebc greenstuff, x-codes, mod b-codes, amp power steps, mean green alternator, ranchhand grille guard, and one badazz sound system.
2002 Ford F-250 crew 4x4 riff raft thermo housing 7.3 350k miles and counting
2001 ford ranger 3.0 2wd xlt ext cab
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Old 07-27-2014, 09:29 AM
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Quote:
Originally Posted by projectSHO89 View Post
Does your Exc have the valve in the coolant lines to shut off coolant through the heater core in MAX A/C? Does it work?

What is the actual outlet air temp (center vent, high speed, temperature stabilized, 1500 RPMs) as measured with a thermometer?
Has coolant valve not sure if it works. Will get back to you on that one.

Still looking for my digital thermometer. Going by another one today.
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2002 ford excursion 7.3 diesel 4x4 mbrp 4'' SS, afe stage 2 with zoodad mod, John woods valve body, +8 deep trans pan, 6.0 trans cooler,04 Lariat wheels w/ black painted windows, ebc greenstuff, x-codes, mod b-codes, amp power steps, mean green alternator, ranchhand grille guard, and one badazz sound system.
2002 Ford F-250 crew 4x4 riff raft thermo housing 7.3 350k miles and counting
2001 ford ranger 3.0 2wd xlt ext cab
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