Check the fuel pump electrical relays. if faulty can cause flux in preasure as it can't maintain full contact.

 

Also make sure you check the PCM connector, my H2 had exactly the same symptoms, i also replaced everything i could think of but it turned out to be water in the connector. The pcm is very easy to get to, in a plastic casing in the front, close to the radiator, driver side.
How do you get the truck running again once it stops? Mine would stop for around 10 minutes, then i could usually start it again, it would then run for a while (10 minutes to half a day)
next time it stops try jiggling the PCM harness a bit and see if that allows you to start it, if so it should be the connector.

Cheers,

 

i was mistaken, the sensor i had in mind is the engine coolant sensor. Googling for the position of the camshaft position sensor in the LQ4 block shows that the sensor is in the back of the valley on top of the block in the rear, 2007 and newer would be in the front.
http://i1233.photobucket.com/albums/...now678/051.jpg

i replaced the knock sensors the other day in the valley, chasing another gremlin, you'll probably need to take the intake manifold off to get access calling for new manifold gaskets if you want to play it by the book, the gaskets are rubber though and my old ones looked fine but i replaced them none the less. Lots of work though, you might want to explore other options first

 

I have a 2005 H2 and am wondering about early detection to try and prevent me from stalling/stopping in the middle of a highly traveled road all by myself, and the humiliation I would experience, especially with such a big beautiful vehicle as these?
I am Mrs. MARCM and usually the one driving this beautiful animal. Any suggestions I can provide my mechanic?