Question about Ford Fairmont
One thing that I would suggest is going out at night time and starting the car and open the hood. See if you see any of the spark plug wires sparking. You could have a bad plug wire. Another thing that you could check is a fouled plug. Or maybe the points are getting worn. It is very hard to diagnose problems without seeing the vehicle. But from what you describe it sounds like an ignition problem.
Posted on Oct 17, 2010
It is very likely the Exhaust Gas Recirculation (EGR) valve is the cause of this, disconnect the vacuum to the EGR valve and if the stumble goes away replace the EGR valve vacuum delay valve, or thermal vacuum valve, I was a Ford Tech for years and the EGR was a problem on this engine. Below is a picture of the EGR valve and the vacuum delay valve, the parts are avail in the aftermarket from parts stores like Napa and Carquest.. 1st is thermal Vacuum valve for the EGR, next is the EGR valve .
Posted on Oct 16, 2010
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Posted on Jan 02, 2017
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