SOURCE: 1997 Ford Escort losses power
Do you have a blown head gasket? Just a guess. If you do this is one of the symptoms. You may have some coolant in your oil. Check your inside the valve cover for water by looking in through the oil cap.
SOURCE: After driving for an hour
I had the same issues for most of last summer. Finally, I replaced the Plug Wires and the car has been working like a charm since. The other problem I found was that I had the wrong plugs. It seems there are only two types for the Focus, the local parts guys quoted me the incorrect part number and my fuel efficiency went to ****.
Bryan
SOURCE: 1986 ford ranger xlt 2.9 liter fuel injected
thermostat or blocked matrix in rad,evan head gaskets could be on the way out
SOURCE: 2006 Ford F-150 5.4 engine. code
2006 Ford F-150 5.4 engine: code P0191 fuel rail pressure sensor circuit range / performance
First step is to change the fuel filter and test the car. If the problem still occurs: The fuel pump driver module was corroded through from salt and was malfunctioning. Bought a new one and runs great. Problem fixed. See pictures below:
This is why salt destroys cars.
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