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Sounds like a sensor issue, I would check the temperature sensor for the ECM as a possibility or get the car scanned to see what the sensors are doing. If the check engine light is on there will be stored codes to give you direction.
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2003 Ford Focus engine stalls when air conditioning is turned on?
why 2003 ford focus stall when air conditioner is turned on
How many valves does the 2003 Ford Focus have?
The 2003 Ford Focus has 16 valves.
What kind of transmission does the 2003 Ford Focus have?
The 2003 Ford Focus has a 5-speed manual.
Is the 2003 Ford Focus electric or gas?
The 2003 Ford Focus is a gas-powered vehicle.
What size engine does the 2003 Ford Focus have?
The 2003 Ford Focus has an inline 4 engine.
What causes a 2003 Ford Focus to stall when stopping only on humid days with the temperature around 75 degrees after the car has been used for stop-and-go driving or running errands?
Stall or stop completely? Does it restart after it stalls or does it have to wait a few minutes? When it stalls does it still turn over or act as if power is not going to the starter? Not enough info to answer this question.
What is the curb weight of the 2003 Ford Focus?
The curb weight of the 2003 Ford Focus is 2598 lbs..
What kind of fuel does the 2003 Ford Focus use?
The 2003 Ford Focus runs on regular unleaded.
How long is the 2003 Ford Focus?
The 2003 Ford Focus is 14 ft. 0.1 in. (168.1 in.) long.
How tall is the 2003 Ford Focus?
The height of the 2003 Ford Focus is 4 ft. 8.3 in. (56.3 in.).
What is the cam type of the 2003 Ford Focus?
The 2003 Ford Focus has double overhead cam (DOHC).
What is the turning circle of the 2003 Ford Focus?
The 2003 Ford Focus's turning circle is 34.3 ft..
