My truck finally stalled on me today in the street, though it started back up just fine, whats weird about it is that it didnt stall when i stopped at the sign, it stalled after i gave it some gas while i was turning,
now, any one who read my post about what the engine and transmission do with the "Loss of Power" knows that i have a little problem with that and thats what i thought it was until i noticed i was only going like 10MPH and it was in first and noticed the tac went down to 0 RPM im wondering why it stalled because it was completely random

just to refresh peoples memory if this matter it is the Carburated 3.9 V6

 

I wish I could help you, but I don't know much about the engine/drivetrains of the pre-magnum dakotas. Just out of curiosity, has the carb recently been cleaned and tuned? I still think from when you mentioned it before that it is a carb issue, but since it stalled while you were turning, it could be a fuel delivery issue? How much gas was in the tank?

 

The carb has not been cleaned or adjusted at least since i got it but i havnt put to many miles on it either, the gas tank is basicaly speaking almost full, filled it up all the way last week or earlier this week

 

Well the way I understand it, miles don't have a lot to do with the tuning of a carb. In theory, each season when the climate changes the carb needs to be tuned (unless IL doesn't have huge climate differences). For example, if it was tuned on a cold day, and now its really hot outside, it will run rich. Or if it was tuned on a hot day and now its cold, it will run lean. Chances are if it stalled under load (you said you were giving it gas) then it is too rich.

Typically in my experience (which isn't a whole lot with carbs) if it stalls at lower rpms under load it is rich, and if it cuts out at high rpms under load it is too lean.

 

Huh, but i wonder why it didnt do it before, lately (This week) its been raining accept for today which is clowdy and hovering around the 50s-60sF though on hotter days it had ran fine and did the same when we got it which was in Feb which was a good amount colder at times

Edit: I also didnt know it had to be adjusted depending on season

 

It may not just be temperature, it may be a combination of the temperature and humidity levels since it was raining. This is why EFI is so much better, the o2 sensors do real time tuning of the engine, with a carb, it's basically as close as you can get it for "average" climate conditions in your area.

 

What about it having an Oxygen senser, what does that do for it because i know my truck has one but i dont know if that affects the carb or anything like that in specific

 

I have no idea! My experience with carbs is limited to 100% mechanical carbs, not electrically controlled carbs. Hopefully someone else can chime in with some info.

 

So these carbs are electronicly controlled, what the hell!? How much of a difference is there between a regular and electricaly controlled carbs?

 

I assume they are. I've never actually seen the early Dakota's up close. I'm just about out of advice now, but I'm starting to think if it really has an o2 sensor, maybe the sensor has gone bad? I'm still sticking with a tuning issue though.