Ive noticed several times at start up my truck will have a jerking, or surging feel after putting it in drive and thats with my foot not even being on the gas. It's an 05 with the 5.4. Thanks

 

yup- get it all the time.
nope, dunno if its a problem.

 

Are you putting it into drive right at start up? My truck idles at about 1500 rpm right at start up and the takes about 20-30 seconds to drop down to normal rpm's.

 

Do you take off immediately after start-up? These trucks have a rev up feature programmed in the computer allowing them to rev up to around 2k RPM'S a few seconds after start up, in order to warm the engine up quicker and get oil to the valves before taking off. I suggest starting your truck and let it run for about 45 seconds to 1 minute and then take off. If it is still doing it, report back and we'll get it figured out.

 

Lol my thought exactly. (posted at the same time)

 

well- it obviously does it at 1800 rpm- but it will lurch even after it drops to a cool 800 idle (in my truck at least)

 

after you start it up push down on the brakes hard and then put it into drive..

 

That will put a lot of presure on your u-joints. Wait the 30-45 seconds.

 

LOL when i start my truck.. i get the high idle feature.. happenend but my truck wont let me select a gear with out puttin my foot on the break... most vehicles are set up that way.. bein a safety feature

 

of course- but once you do select a gear, does your truck lurch forward, or is it smooth until you give it gas to go?

 

There are several functions in the PCM to control this, them main one however is the ISC air multiplier table that is setup based on ECT and Time. Roughly 80 cells if i can remember right.

 

i was wondering this too but guess thats my problem

i go out get in the truck start it and leave for school or i wont get a parking spot haha

 

it moves smooth as i accerlarate it dont jump ...

 

Its the idle. . just wait and it won't do it.

PS: Im glad I don't have to worry about that, gotta love the remote start!

 

God I love my remote start, by the time I get in my truck its already warmed up, and ready to go...