2005 Dodge Grand caravan rough idle

Asked by Jul 09, 2018 at 06:48 AM about the 2005 Dodge Grand Caravan

Question type: Maintenance & Repair

Recently while driving my 2005 Dodge Grand
caravan 3.3 v6 it just started bucking and running
rough... Mostly happens when you first start the
car but it is very unpredictable sometimes it won't
happen for 2 days and other times it will happen all
day back to back.... The issues are rough start,
rough idle (runs best from start to go if you put in
neutral and rev engine to 1500 rpms then go)
sometimes it goes from 35 mph to 5 mph and if
you press hard on the gas it will sometimes take
off and surge all the way to 3000 rpms then it
backfires, shaky, and sometimes you can hear the
combustion failure in the engine like pooping etc...
Smelling gas occasionally.... When we had the
codes done it came up p0301, p0201, and p0300
mechanic suggested Changing the spark plugs
and wires we did that but it had no change so he
said maybe bad gas, took it to another mechanic
he said just wait until the car dies and get a new
one(not really that feasible) and the next mechanic
suggested changing the fuel injectors which we
did yesterday.... No change.... But it's not as bad as
before there is still a problem.... Car runs better low
on gas.... Oil is clean, transmission fluid is clean,
air filter is clean, we will take it today to have the
codes run again and see if anything changed.... If it
helps the old fuel injectors were very dirty.....
Please help

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