The first portion of the KOER test is for cylinder identification of the of the number of cylinders being tested. That is why I always get a 4 on my 460's and you got a 3 for the 4.9. Being batch fired the 4 and 3 cylinder identification is correct for our two motors. Perhaps when you got the 3 you assumed it needed a zero to make it a two digit code?

 

I have no confidence in the KOER test I made. There was definoitely a 30 code BUT, I'm sure I conducted the test incorrectly and/or made the wrong evaluation. Subsequently posts by forum users, ria2005, show that 135 and 246 are batch fired injectors that would seem to invalidate the 30 code for an individual cylindee. It was a mistake in the code or more likely a mistake in interpretation. This is something I'm going to think about for the next few days.

 

Can you elaborate on what issue the new ECM might have fixed?

 

Seems to have maximized the performance. A great example is if you just got a wild hair and floored it once it was time to shift it'd jump into the next gear causing the entire truck to jerk really hard. After installing the new ECM once it's time to shift it actually pulls down the rpms before it goes into the next gear and you barely even notice it shifted. Also would start falling on itself at a stop in gear or not and now that has went away. I regret to inform everyone though that my torque converter and miss are back for round two. You may of seen my thread "Major issues with my 94 F150...again" but going to replace tps (throttle positioning sensor for those who don't know) and see if that fixes it. It did last time so going to put a MotorCraft tps on instead of the cheapo brand and see what it does. Moral of the story it seems to be actually catching itself and maximizing the performance as it should in the first place. Only thing that puzzles me still is after having this miss and loosing the torque converter randomly the computer gives the system pass every time with no trouble codes but probably another unrelated issue.

 

To also note before the ECM went dead dead the truck rpms would randomly shoot up to 2000 by itself and if you shut it off and let it sit for five minutes it was fine until it did it again. Before it was parked the truck started falling on itself and could barely keep running. You could have it floored and it wouldn't do a single thing except choke itself out. Once again I started it three hours later and everything was fine. I had to replace the ECM one way or another because a capacitor had leaked all over the motherboard and was about to break off.

 

Nice! Well glad that the replacement fixed those issues. I dont want to junk myself my I am not experiencing any of the issues you are saying. I haven't gotten a chance to pull the ECM off yet to check any of the capacitors but I probably should do that soon just to make sure everything is doing what it should.

 

It should downshift hard depending on how much load is on the engine and what gear it was downshifting from then to. Fourth to second is a big jump. I’ve never seen the rpms get pulled down before shifting unless the current gear wasn’t sufficient to keep the current speed so that meant you were also slowing down as the rpms dropped. The fact that the computer did not fix your original problem means that the computer was not the solution. Just as I believe the computer is not the issue with Red Rascal’s truck.

 

Truck smoothed out the shifting is what I mean in simple terms and it should never go from 4th to 2nd at over 50mph. No I was not slowing down. Yes the computer didn't solve my problem completely but all I was saying was to not overlook it and investigate it. Takes like fifteen minutes to pull out the computer and look over the motherboard. All I was trying to do was to try to help out and tell him one of the many things it could be. Not looking for an argument and just giving any advice I have.

 

Yes, It will.

 

I don't know what setup and gearing you have but maybe yours does...mine never has. If it shifted from 4th into 2nd over 50 mph my engine would be over 5000 RPMS. Never in my entire ownership of this truck has it ever gone past 4500 RPMS and that's almost near impossible for me to get it there. Even floored it always wants to shift at 4000 RPMS. The transmission also shouldn't jerk the truck every gear it goes into. If I knew how to put vids on here I'd show the before and after results. With the new ECM you barely notice the shift and before the new ECM it'd shift hard into the next gear enough to make you move in your seat. I also know it shouldn't shift hard because a mechanic friend of mine who went to one of the best colleges in the states said it shouldn't either. Once again I'm just trying to help Red Rascal with my experiences. This thread is about ECMs after all...