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Hello strawder, I'm Chris, a current Ford Lincoln Mercury employee.
Thanks for visiting Just Answer. I will do my very best to help you resolve your concerns.
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Since the CEL has come on have you used a scan tool to see which code is stored?
Do you get a jerking feeling or a shudder when this occurs?
Can I get the vin#?
Once the #5 misfire parts were replaced did you still get a flashing CEL producing the same code?
I have changed cylinder #5 plug twice already and tested the new coil on another cylinder. The injector would cause a rich condition if it was stuck open (I had that problem on cylinder #1 before) I don't think checking compression will help because it doesn't show it as a misfire until a load is on the engine and the vehicle is moving. I will check the vacuum hose recall and try to monitor the sensor signals. I appreciate the help with this problem and I'll get back to you with an update.. THANKS!
Do Ford PCM's have a limp mode or reduced power mode like GM vehicles?