Hi All,

Long time reader first time caller here with a 2003 F-250 SD 4x4 w/5.4L engine and 4R100 trans (pic in sig) . Truck has 280K on it with about 40K on a partial rebuild on the top end.

Took the truck out offroading and got about 4" from the top of the 33" tire in water (not mud.. water) . Someone with 6' tractor tore through the puddle.....

Well the truck survived through it ... albeit dirty as all hell and developed some issues soon thereafter. Codes for misfires on cyl 1,3,6,7, general ignition coil, etc etc etc

Power washed the underbody , washed the mud off the engine bay (yeah... with water but given it was caked with mud and water to fill the plug wells... no additional harm lol) .

Replaced all 8 COP and 4 plugs ( easier ones to reach), oil change, oil filter, new paper cone filter. checked most all the harness connections and cleaned with alcohol also. Reset the PCM/ECU and drove the truck for about 100miles and finally just after putting a full tank of gas (92 Octane) I throw a P0325...

The engine runs very clean, no hesitation, smooth idle, smooth acceleration on both light and hard acceleration. Just the damn code. Curious is anyone has any insight? Is it the gas I just topped off? After 100+ miles with new COP and plugs it threw nothing until this and runs great. Dont hear any knock/ping/detonation by ear and feels silky smooth at idle.

I really dont want to have to tear the intake off to replace bank 1 knock if any of you folks have a cheaper / quicker test to try first?

Again... any ideas would be appreciated as my knuckles are still beat to hell from the COP and plugs this weekend.

Thanks

 

Any ideas folks? Any help at all would be helpful.

 

I know that this is not a Ford, but it might give you some direction on locating your problem. After all, a knock sensor is a knock sensor.

 

Thank you David I'll look and see if there is a published value to check my knock sensor. I did order and have a new one just really am avoiding taking the intake off to get to it.

 

Tried Today:

1) Tapping on block to see if ignition advance changes/retards via knocking ... it did not lol.
2) Cleaned MAF with MAF cleaner spray just on the outside chance it will help.
3) Put in an ethanol stabilizer / upper cylinder lube since the code tripped right after a full tank of 89 octane in NJ.
4) Erased the code and wait to see if it comes back again.

Incidentally P1000 Drive Cycle Not Complete still ? I have put nearly 200 miles on the truck with every type of situation I could think of (low/medium/hard accel, stop & go traffic, highway driving, hills and some off terrain) and its still hasn't completed ?? Seems O2 sensor readings aren't done yet

If anyone else has experienced this please chime in. The engine feels great and even with 33" baja claws on it she will power brake , launch hard, accelerate smooth and silky ... not that I bought a truck for 0-60 acceleration but even that feels about 10-11 seconds from a standstill .

 

Because your truck is over 8500 GVW it is OBD1 and will never show the drive cycle as being complete, that code will always be there..

 

Well there ya have it !! +1 , thanks for the info.