So here's the deal... 2006 Dakota 4.7 has started "bucking". I thought it was a transmission issue, but I'm now leaning more towards fuel or electrical. The truck will cut out for half a second (rpm's drop out) then it comes back. Sometimes it happens a couple of times in succession, sometimes not at all. Sometimes when cold and sometimes when hot. No codes showing. HELP!

 

It sounds like an electrical problem. Something is getting hot and failing. I would lean towards a crank or cam sensor as on older engines, if they fail, they just don't send a signal. If the signal was wrong, it would set a code. Lack of data, when it can be on or off, won't set a code. I'm not exactly sure how your engine is set up as while I have had a 4.7, I never had an electrical issues with it.

 

Thanks for the input. I'll change those out and let you know.

 

Before I started throwing parts at it I played a hunch and it turned out to be water in the fuel. I bought a couple of bottles of heat, one yellow one red. I started with yellow, full bottle to half a tank. Drove it to below a quarter then put half a bottle of red in and fillled it to half. Did that one more time and it seems to have solved the issue. It's been 3 weeks and so far so good.

 

With the advent of Ethanol fuel, we don't get much moisture around here. Ethanol absorbs water so you must have really gotten a dose of water to affect it like that. When I got my license back around '70 (yes, I'm old) we had to worry about "gas line freeze". I haven't seen references to that in years. At least you have the problem solved. I'd figure out where you bought that fuel and go somewhere else. The only way you could get water is if they have a lot of ground water and leaky tanks.

 

I hope the problem is solved. Thanks for your input.

 

So it happened again yesterday. I've been staying away from Sam's club fuel, because that's where I thought it was happening from. So I decided I was going to change out both sensors crankshaft camshaft. Here's the thing my crankshaft sensor does not have a 10 mm bolt it had a 13-mm bolt and the only reason I bring that up is because it also seems to have a snap ring holding the damn sensor in. Have you or anybody else ever come across this type of mounting?

 

Remember to only use OEM sensors on these 3rd gen trucks.