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Hey people, I have a 2000 Excursion with a V-10. It has 90,000 miles that I just cannot find what's causing what seems like a low speed mis. I have replaced the fuel pump (Had no fuel pressure), sparkplugs (used Autolite plugs), all new coils and boots. There is no check engine light and no codes set. I don't know what else to do any ideas?
Hey people, I have a 2000 Excursion with a V-10. It has 90,000 miles that I just cannot find what's causing what seems like a low speed mis. I have replaced the fuel pump (Had no fuel pressure), sparkplugs (used Autolite plugs), all new coils and boots. There is no check engine light and no codes set. I don't know what else to do any ideas?
does it also "miss" when sitting in your drive way idelling?
Broken,
Check that little rubber elbow that attaches to the front of the throttle body and runs to the PCV valve on the driver's side. You can't tell by looking sometimes, so you'll have to remove it. Look for deteriorated portions of it.
Vacuum line rotted out? Spray some carb cleaner around the lines and see if the rpm increases. If it does you have aleak. Try to pinpoint it wth the same method.
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