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Little odd misfire, 2005 2.3 head on 2.5 block


DaveH

Active Member
Law Enforcement
Joined
Jan 21, 2023
Messages
150
Reaction score
84
Points
28
Location
sherwood Oregon
Vehicle Year
2005
Make / Model
Ranger XL
Engine Type
2.3 (4 Cylinder)
Engine Size
2.3
Transmission
Automatic
I've driven this Ranger for a few hundred miles after the rebuild. I was able to solve the slew of codes (previous posts) in one fell swoop when I found a transmission electrical connection was loose. Now the codes are gone and the truck is running there is an intermittent problem. For some reason it has a random miss between 1800 and 2000 rpm. 50-55 mph. Other than this the truck runs and shifts perfect. Plugs are new, head is newly rebuilt, crank and cam sensors are new. The fuel injectors were cleaned and am using the OEM coil and wires. Since the misfire doesn't throw a code I'm looking for a place to start. Suggestions??
 
Last edited:


franklin2

Well-Known Member
Joined
Dec 24, 2019
Messages
3,586
Reaction score
1,844
Points
113
Location
Virginia
Vehicle Year
1984
Make / Model
Bronco II
Transmission
Manual
I would check the gap on the plugs and put the gap on the low end of the spec and see if that helps it. No one gaps new plugs out of the box, but they should be checked, even if they are new.
 

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