Oh the 5.4 and its troubles
#1
Senior Member
Thread Starter
Oh the 5.4 and its troubles
So as I'm driving to college today my CEL starts to flash (it's been on cause of misfire cyl3 which I replaced) so I know from experience that it flash before it throws codes so I didn't study it a whole lot but I noticed loss of power lack of throttle response etc so after class I take ol girl to oreillys to get her scanned 5 codes in total
P303 misfire in cyl 3 which I replaced
P0172 system to rich
P0300 multiple misfires
P0307 misfire cyl 7 haven't replaced yet
P0357 I think is what it was which is bad ignition coil
Trucks an 05 KR 4x4
Replaced coils and plugs in cylinders 1-4 and 6 so I still gotta do 5,7,& 8 anyway I need help any help as to what to do besides change plugs and coils how do I test coils and what not how do I fix the system to rich?
Thanks Forrest
P303 misfire in cyl 3 which I replaced
P0172 system to rich
P0300 multiple misfires
P0307 misfire cyl 7 haven't replaced yet
P0357 I think is what it was which is bad ignition coil
Trucks an 05 KR 4x4
Replaced coils and plugs in cylinders 1-4 and 6 so I still gotta do 5,7,& 8 anyway I need help any help as to what to do besides change plugs and coils how do I test coils and what not how do I fix the system to rich?
Thanks Forrest
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Bossgame (02-03-2015)
#3
Senior Member
Thread Starter
#5
Senior Member
Were the COP boots and springs replaced when the plugs were done?
Why are you just replace 1 or 2 plugs at a time? Do them all at the same time. You are just chasing smoke instead of putting the fire out.
The plugs missing could cause your system rich due to unburned fuel.
You need to fix this asap or you will replacing cat also
Why are you just replace 1 or 2 plugs at a time? Do them all at the same time. You are just chasing smoke instead of putting the fire out.
The plugs missing could cause your system rich due to unburned fuel.
You need to fix this asap or you will replacing cat also
#6
Senior Member
Thread Starter
Were the COP boots and springs replaced when the plugs were done? Why are you just replace 1 or 2 plugs at a time? Do them all at the same time. You are just chasing smoke instead of putting the fire out. The plugs missing could cause your system rich due to unburned fuel. You need to fix this asap or you will replacing cat also
#7
Senior Member