rough idle in gear, missfire, stumble, etc.
my 00 dakota 3.9 at, has been having some problems for a while now. i am done with the whole replace this, and hope it works thing. so, i am turning to the pros, you guys. anyway first problem is every once and a while it will missfire on one or maybe two cylinders, and only when it is idleing in gear. like i said it's random, but when it starts to miss you can put it in nuetral or step on the gas and it goes away. you can also hear a clicking sound, sort of an arcing sound, but it's definetly an electrical noise when it misses. i haven't noticed any kind of pattern, except after you've driven it somewhere and parked it for a short time, then restarted it, it seems to do it more often. but this problem is so random i can't make it miss to diagnose anything not to mention how many of my buddies have waited around for the truck to miss. it's funny how things never work when someone else is watching. but i have repaced the dist cap, rotor, plugs and wires, iac motor and relocated the iat, also tried about everykind of inj. cleaner.
problem two, this one just started, but it's very random as well. while you are driving it will lose power, not die, it will keep running but barely, it will idle roughly at about 400-500 rpm. if you try to give it a little gas it will stumble and cough and kind of rev but it seems to want to die. buuuuuuut. if you floor it, well then it runs perfect. generally above 2,000 rpm's it will run clear, drop below 2000 and it starts to stumble and cough. it's really weird, it runs terrible but it doesn't seem to ever die. it's like its short on fuel. but then when i punch it, it's not. and like i said it totally random. does it all on its own. not uphill or down not pulling or coasting not warm or cold. just when it feels like it. any help would be very appreciated. and i am sorry for the long post. just wanted to get all the info out there. thanks.