Water our worst enemy.

[Pepino]

Could be three things, bad news is that the three things are important, Air, Fuel, or spark.

ok how long did it take for the problem to start. this is important, while the engine is cold it runs a preprogrammed fuel map... it runs rich (good thing). once it warms up it starts to take readings of the fuel air mixture using the o2 sensors, then adjusts for the correct afm.

if it warmed up and came off the fuel map and tried to put the correct fuel in but could not it can run like this.

did you notice black smoke out the back?

the same goes for ignition timing, if the timing is off i.e. bad crank sensor the truck can run like ***, I get the same thing on my 89 bmw if the crank position sensor gets wet. runs just like that backfires dies and takes for ever to restart.

the air intake can also be premmaped untill the engine warms.

the two differrent modes are called closed/open loop, i forget which is which atm.

since you have cleaned the MAF and i assume have no air blockage since it was running, I think we can out the Air problem to the side for now.

I would start with the spark side first, checking over the whole system overview style, looking for bad conections, lingering water then do the same with fuel.

drive the truck till warm see if it happens again.

If it does, check the entire ignition system, pull off each coil one at a time look for water pull each plug look for cracked ceramic on the plugs, look at each plug they should be dry, kinda brown/metal color with minimal soot, carbon build up. if you find one that is not you may have found a symptom of your problem. soot is caused by too much fuel not burning correctly.

I really want to say its a problem with timing on the ignition side. I would say the crank sensor appears to be working.

How deep was the water inside the truck? the ecu is only inches above the tranny tunnel

No black smoke, problem happens randomly but never when engine is cold, I might have driven for 30 minutes when it starts, sometimes it takes more than an hour drive, if it dies I turn the ignition on and starts inmediatly like nothing is wrong.

Ignition seems to be fine, did a whole tune up and changed sparkplugs and they were fine.
No blockage in the intake, maf cleaned, I am even running right now without the cone filter. While I get a new better one, problem seemed to stop everytime I took the air filter out, but after a week of driving like that problem came back. So I thought it had something to do with intake and air.

I am still trying to figure out whats going on, doesnt seem to be a big deal If I dont push the engine to far. I am still trying different things to see what fixes the problem.

Thanks for all the input, I will let you know when the problem gets fixed, if it ever gets fixed.

[subject47]

hmm I was pretty drunk that night, I dont even remember typing that. lol