1998 4.6 missfire codes - Ford F150 Forum - Forums and Owners Club
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Old 08-31-2019, 09:21 AM
Sarah0306 Sarah0306 is offline
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Engine: 19971998 281 CID (4.6 L) Triton V8 220hp 280lb/ft
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Default 1998 4.6 missfire codes

I have started to get missfire codes on my truck, first was a cyl 5 and then on cyl 4.
I did get the flashing CEL and it reset once I shut off the engine and restarted.
Truck has 207K miles and is a manual, the flashing CEL was in 5th gear and low load.
This may be related, I have a coolant leak I can not find.

The smell of raw coolant is around the truck and no smoke out the exhaust or any trace of it in the engine oil.
I do have 2 new coil packs and wires along with plugs.
What has me even more puzzled is that cyl 5 and 4 are coming up, different side of the engine.
Any help is appreciated.
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  #2  
Old 08-31-2019, 04:02 PM
Sarah0306 Sarah0306 is offline
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Join Date: Feb 2017
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Engine: 19971998 281 CID (4.6 L) Triton V8 220hp 280lb/ft
Rep Power: 0
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Default Update

Well I replaced both coilpacks and found that 2 plug wire sockets have a lot of green corrosion in one and the other show evidence of spark jumping and eroded the plastic case.
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