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I have a 2010 Ford Transit Connect. a/C runs intermittently.

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I have a 2010 Ford...
I have a 2010 Ford Transit Connect. A/C runs inermittently. When it is working blower fan runs on all 4 speeds. When it stops working it only runs on high. System is fully charged and I changed the blower fan resister
Submitted: 1 year ago.Category: Ford
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Answered in 13 minutes by:
6/6/2016
Ford Mechanic: HDGENE, Ford Senior Master/Diesel/Trans replied 1 year ago
HDGENE
HDGENE, Ford Senior Master/Diesel/Trans
Category: Ford
Satisfied Customers: 6,001
Experience: 28 years Auto experience, Ford ,GM, Chrysler, Asian & European
Verified

Hello, if only the blower fan is having an issue and will only work on high speed it is a problem with the blower motor resistor. When it fails it will only work on high speed. Inspect the electrical connector to the resistor for any hear damage and if ok, replace the blower resistor.Located behind the glove box on the ac case.

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Customer reply replied 1 year ago
As I said in original question I changed the resistor. It's the comressor clutch that is intermittent. When the compressor runs the blower runs on all speeds but when compressor cuts out blower only runs on high speed. This has been happening for two weeks now.
Ford Mechanic: HDGENE, Ford Senior Master/Diesel/Trans replied 1 year ago

Ok sorry i didnt see you replaced the resistor and fan. I thought you were having a fan only issue. When the compressor cuts out does the radiator cooling fan shut down or does it keep running? Does it work at all?

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Customer reply replied 1 year ago
Everytime it has cut out I have been driving so I dont know about cooling fan. When it does'nt run when I first start van the clutch has not engaged and. the cooling fan is not running. Like I said this has been going on for two weeks. It ran flawlessly Thursday afternoon and all day Friday. When I started it this morning after not using van all weekend it was working. After driving about 10 miles it stopped working. only consistancy is when the cooling stops the blower only runs on high and when it starts cooling again blower works on all speeds. Does'nt make any sense to me
Ford Mechanic: HDGENE, Ford Senior Master/Diesel/Trans replied 1 year ago

Ok what is odd is the blower fan speed operation. Either there is an issue with the ac switch on the dash being overheated and causing a voltage drop, which i have seen or blower switch, both in the center of the dash. Inspect both of them for any damage or signs of overheating. The cooling fans on the radiator should come on when the ac switch is commanded on, so if neither the compressor or the fan come on and the interior switches look ok. Try swapping out the ac relay and retest. If you have the same results. Install an ac manifold gauge set to check ac pressures. If the compressor engages but the fans dont, the high pressure switch will turn the ac compressor off.

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Ford Mechanic: HDGENE, Ford Senior Master/Diesel/Trans replied 1 year ago

Hello, do you need more help with this concern?

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Ford Mechanic: sprinkles08, ASE Certified Technician replied 1 year ago
sprinkles08
sprinkles08, ASE Certified Technician
Category: Ford
Satisfied Customers: 23,520
Experience: ASE Master and Advanced level certified. Factory trained with 17 years dealership experience
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Hello and welcome to Justanswer!

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