2008 Ford Expedition 5.4 Firing Order – It’s important to know which banking institution (or cylinder head) is number one to assist figure out a place to start for firing order or perhaps to exchange the right aspect, like an Oxygen sensor, gasoline injector or ignition coil.
In the past all of that was required to determine which lender or cylinder go is # 1 was to see which cylinder go is situated the farthest frontward. One that is the most frontward (nearest to the front from the engine) is the top cylinder which area is bank one particular.
But many engines right now have cylinder heads which can be positioned consistently, which makes it harder to determine which is financial institution primary and which is financial institution second. A couple of common good reasons we have to know this, as an example would be to decide Oxygen sensing unit to exchange when you would like B1 S1 (Banking institution A single Sensor A single), or maybe if you’re trying to track down an ignition coil to inspect for a P0301 (#1 cylinder misfire recorded) misfire code.
Items to attempt
A number of cylinder engines also have the #1 cylinder nearest the front side of the engine (only one bank).
V-6 or V-8 try to find the connect that is certainly nearest to the top in the engine, in the event the cylinder heads are even an alternate method of identifying #1 will probably be necessary.
Don’t disregard the clear, review the spark plug cable itself for cylinder phone numbers.
Also examine the ignition coil for phone numbers.
For those who have a scan device, try out disconnecting an oxygen detector briefly to determine which is B1 or B2. Commonly a pending code or hard code sets quickly. Also check out the info display screen of the skim device, the voltage must in most cases normal to .5V.
If all else breaks down see the service guidebook. A lot of online options give easy access to firing order and even more at Do it yourself costs.
Some 2008 Ford Expedition 5.4 Firing Order Available here