The engine cylinder locations are numbered :
firewall
4 - 8
3 - 7
2 - 6
1 - 5
front of Ford Expedition
so I would ASSUME it's
firewall
D - H
C - G
B - F
A - E
front of Ford Expedition
On a 1998 Ford Expedition : One way is : The 4.6 has the Electronic Distributorless Ignition System ( EDIS ) and has ( 2 ) coil packs and ( 8 ) SPARK PLUG WIRES The 5.4 has the Coil On Plug ( C.O.P. ) ignition system and has ( 8 ) individual coils
98 expedition
The 3.2L has an ignition coil on each spark plug.
In the distributor housing
Some Mercedes has the ignition coil together with the spark plug. I mean, one ignition coil feed directly one cylinder and with a wire another one. So, if the engine has 6 cylinders there are 3 ignition coils.
the ignition coil
Check the Sonoma crank position first. If the sensor is bad then there will be no spark from the coil.
passenger side up front next to alternator.
under the coil pack or on the distrbutor
you have to replace your spark plug wires there is a coil on each wire for each cylinder.
Trouble code P0351 means: Ignition Coil A Primary/Secondary Circuit
Ignition module, ECM, ignition coil are all resonable suspects. Ignition module, ECM, ignition coil are all resonable suspects.