2004 Ford Expedition Firing Order – It’s important to know which financial institution (or cylinder head) is primary to aid determine a beginning point for firing order or perhaps to replace the correct part, such as an Oxygen indicator, fuel injector or ignition coil.
In the past all of that was needed to find out which financial institution or cylinder mind is primary was to see which cylinder mind is situated the farthest ahead. The one which is easily the most frontward (nearest the front side of your engine) is the best cylinder and this area is bank a single.
But a majority of engines right now have cylinder heads which are placed uniformly, rendering it tougher to determine which is lender number one and which happens to be lender second. A couple of typical motives we must know this, as an example would be to figure out Oxygen sensing unit to replace when you are looking for B1 S1 (Bank One Sensing unit One particular), or if perhaps you’re trying to track down an ignition coil to examine to get a P0301 (#1 cylinder misfire captured) misfire code.
What you should try out
Several cylinder motors also have the #1 cylinder nearest to the front of your engine (merely one lender).
V-6 or V-8 try to find the plug that may be nearest to the front side of your engine, in case the cylinder heads are even a different method of determining #1 is going to be necessary.
Don’t overlook the apparent, check on the spark connect cable on its own for cylinder phone numbers.
Also examine the ignition coil for numbers.
In case you have a check out instrument, try disconnecting an oxygen sensing unit briefly to find out which is B1 or B2. Usually a pending code or tough code sets quickly. Also check out the details monitor from the check device, the voltage must in many instances normal to .5V.
If everything else falls flat look at the service handbook. Several online sources provide comfortable access to firing order and a lot more at DIY rates.
Some 2004 Ford Expedition Firing Order Available here