Ford Focus Forum, Ford Focus ST Forum, Ford Focus RS Forum - View Single Post - 2001 ZX3 probably heading to pasture !!!
View Single Post
Old 03-05-2013, 09:30 AM   #11
Focus Fanatic
6SPD_soul's Avatar
Join Date: Feb 2008
Fan#: 53637
Location: Tomah, WI
What I Drive: 2003 Comp Orange EAP SVT

Posts: 1,543
Points 3,033, Level 33
Points: 3,033, Level: 33 Points: 3,033, Level: 33 Points: 3,033, Level: 33
Level Up 89% Completed
Level up: 89% Level up: 89% Level up: 89%
Forum Activity 37%
Activity: 37% Activity: 37% Activity: 37%
FF Reputation: 24 6SPD_soul Great Standing Member
Buy-Sell-Trade Rating: (1)
You need to be on the lookout for problems in the wiring going to the coil pack also, here's a good explanation of this that just came up today from BCZX3:

When you get a misfire in cylinder 1 and 4 as a pair (or 2 and 3 as a pair) it's usually indicative of an ignition primary circuit problem since the Ford "wasted spark" ignition system fires the plugs in those groupings. Of the three wires comprising the ignition coil connector, one of the two thinner outer wires should show physical damage, chafing, splitting or corrosion. (The thicker middle wire is 12V supply.)

Easiest thing to do is to simply tug on the wires; they usually break or come apart if bad.

If the problem is severe and persistent enough, eventually you'lll throw a DTC code - P0350, P0351 or P0352.
6SPD_soul is offline  
    Reply With Quote