I noticed when my fluid levels were low it seemed to jump, but right now they're spot on. There's another thread with the same issues I started with the same problems. Our engines are different sizes but I think mostly the same theories and practices apply.

 

Do you have the latest engine and transmission software, I have an 2005 Hemi and just last week it was updated with the latest flash now my idle is a lot better and so is all round drive ability.

 

I had it "reflashed" a few months ago. I can go and try it again.

 

A friend of mine has a 4.7 WK and had a similar problem. Turned out his air filter (stock) was clogged up. He replaced the filter and was good to go.

 

Another thing I had a rough idle at startup, and it came up with a P0300 random misfire. Ended up replacing all 16 plugs with oem champions and unplugged the battery to reset and that solved the code and weird idle at start up. The plugs had about 40,000 on them.

 

Thanks guys.

I have a K&N drop in filter for now and i changed my spark plugs over the summer.

 

Maybe your intake swallowed a Honda?

 

Might wanna check/clean IAC assembly because this sounds exactly like a common problem that Ford Explorers had and what was happening was that the IAC plunger was gummed up with carbon and sticking open. When you shift into drive, my guess is that the IAC plunger is not closing which means that you're getting more air and not enough gas (because the PCM assumes that the IAC plunger has closed and cuts the fuel accordingly). This could also explain why your engine dies as you come to a stop...the IAC assembly is supposed to gently open as you coast to a stop to start pumping air (you're no longer generating enough vacuum because your foot is not on the gas) and keep your engine running at idle.

 

What type of plugs did you put in?

 

what happened with this. now mine is idling wierd when im stopped with the brakes on, but if i put it in neutral it idles fine.

 

I originally added the 1/2 qt of trans fluid per the mechanics reccomendation. After about 8 months it started to stall again. I checked the fluid level and made sure it was nice and red and not brown or burnt smelling and it was all right where it should be. I then added some lucas trans oil fix stuff. Not sure which it was an additive oil for any modern trans. I have it in the garage if you want to know what it is. I added that a few months ago and its fine ever since. I am going to get a trans service soon and will prolly have to add more after that as it seems this problem happens after a service because of a lack of oil.

 

i did the same thing today BUT i also noticed my crankcase vent hose from the oil filler to the air intake was off. now the studder is gone. thanks for the info. my tranny fluid was at the LOW on the dipstick after warming the engine up so that was probably it.