AC issues 2007 E350 Van 5.4L
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New User
Joined: Jul 2019
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AC issues 2007 E350 Van 5.4L
Hello all,
My first forum I have every sign up for, see how it works, so bare with me.
This van has been setting for 6 years at the farm. I thought I would get it home and get it running for my son. We have cleaned her up and serviced everything. But we can not get the ac compressor to come on. We have power the low pressure (purple wire)and have jumped it but no clutch engagement, check for power to the compressor clutch wire and no power to the compressor clutch. There is Freon pressure in the system we checked that first thing. The fuse in the engine compartment for the "AC" is good. I have read about a ac relay, but not clear where it is to check the relay.
If I can answer any questions to help with this, let me know.
Any suggestions would be very helpful.
Thanks!
My first forum I have every sign up for, see how it works, so bare with me.
This van has been setting for 6 years at the farm. I thought I would get it home and get it running for my son. We have cleaned her up and serviced everything. But we can not get the ac compressor to come on. We have power the low pressure (purple wire)and have jumped it but no clutch engagement, check for power to the compressor clutch wire and no power to the compressor clutch. There is Freon pressure in the system we checked that first thing. The fuse in the engine compartment for the "AC" is good. I have read about a ac relay, but not clear where it is to check the relay.
If I can answer any questions to help with this, let me know.
Any suggestions would be very helpful.
Thanks!
Fleet Mechanic
Joined: Feb 2007
Posts: 1,652
Likes: 79
From: Mooresville, NC
As a rule of thumb, sitting that long would require a complete flush, evac of the system, likely new orings throughout, new accum, vac pull down and new refrigerant...................here's a quick troubleshooting guide to get started:
Low Pressure Low
High Pressure Low >>>>Low refrigerant Charge
Low side normal
High Side Low>>>> High Side Restriction
Low side normal/high
High Side Normal/High >>>>System Overcharged
Low side high
High Side high >>>>Moisture in the system
Low side Low
High Side Normal>>>> Faulty Cycling Switch
System will not operate
Stuck open>>>> Cycling Switch
Low side high
High Side high >>>>Inoperative cooling fan, blocked Condenser
Low Pressure Low
High Pressure Low >>>>Low refrigerant Charge
Low side normal
High Side Low>>>> High Side Restriction
Low side normal/high
High Side Normal/High >>>>System Overcharged
Low side high
High Side high >>>>Moisture in the system
Low side Low
High Side Normal>>>> Faulty Cycling Switch
System will not operate
Stuck open>>>> Cycling Switch
Low side high
High Side high >>>>Inoperative cooling fan, blocked Condenser
Fleet Owner
Joined: Aug 2010
Posts: 21,253
Likes: 1,656
From: Reynoldsburg, Ohio
How did you test the van's current refrigerant charge?
Your best bet is to post this same question in the A/C sub-forum here--include your year and model in the body of your message as that's very helpful.
You might also obtain an EVTM or book of schematics that shows not only the wiring & circuits it'll help locate parts associated with any one system. This would be useful for the A/C issues as well as just about every other electrical situation you may encounter.
HTH
Your best bet is to post this same question in the A/C sub-forum here--include your year and model in the body of your message as that's very helpful.
You might also obtain an EVTM or book of schematics that shows not only the wiring & circuits it'll help locate parts associated with any one system. This would be useful for the A/C issues as well as just about every other electrical situation you may encounter.
HTH
Thread Starter
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New User
Joined: Jul 2019
Posts: 3
Likes: 0
How did you test the van's current refrigerant charge?
Your best bet is to post this same question in the A/C sub-forum here--include your year and model in the body of your message as that's very helpful.
You might also obtain an EVTM or book of schematics that shows not only the wiring & circuits it'll help locate parts associated with any one system. This would be useful for the A/C issues as well as just about every other electrical situation you may encounter.
HTH
Your best bet is to post this same question in the A/C sub-forum here--include your year and model in the body of your message as that's very helpful.
You might also obtain an EVTM or book of schematics that shows not only the wiring & circuits it'll help locate parts associated with any one system. This would be useful for the A/C issues as well as just about every other electrical situation you may encounter.
HTH
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