I have a 2005 1500 quad cab 4x4 4.7

after its warmed up, If I'm stopped in gear, the idle will drop to 500rpm or just a hair under. The truck slightly
shakes at this low rpm. No check engine light. I brought it to the dealer, and all they said is that it
had no stored error codes. Any one else? Is this actually normal?

 

i know on mine a 2002 their is a flash for this problem, im not sure if it is the same for the 2005 but i will check and let ya know

 

My hemi does that sometimes. Sitting at a light in gear it will drop as low as 500. Its not dangerous or anything. Really sounds good in the hemi too haha. Get that musclecar barely idling sound to it (piston fireing like every other second hahaha)

 

04 4.7 4X4 1500
Mine has always idled at 500 in D and 700 in N.
Only time it is not rock steady is if turning, it will surge a little which can be of a surprise.
I have no shake.

 

thanks for the input. It just doesn't seem right. I work at VW, and if one of those touchy little cars
had this going on, it would have a permanant check engine light for sure.

 

My o4 4.7 did the same thing. It also had a hard start or extended cranking problem. It was the fuel pump.

 

I HAD THE SAME PROBLEM WITH MY 03 1500, IT ONLY GOT WORST, STARTING TO STALL WHEN COMING TO STOP OR TURN.
DEALER WAS NO HELP AT ALL. REMOVE THE AIR INTAKE PLASTIC COVERS TO EXPOSE THE THROTTLE BODY AND CHECK THE VACUUM LINES FOR LEAKS. NEXT GO TO THE THROTTLE BODY AND REMOVE THE CONNECTOR AND SCREWS ON THE AIR MOTOR PULL AIR MOTOR OUT, ITS THE ONE NEAR THE BOTTOM OF THE THROTTLE BODY, IT MAY BE TIGHT CAREFULL NOT TO DAMAGE THE ORING AND CLEAN THE PLUNGER WITH CARB CLEANER SPRAY MOVING IT WITH YOUR FINGER, PRESS IT DOWN AND RELEASE MAKING SURE IT SNAPS CLOSE, MAKING SURE IT MOVES FREELY. REINSTALL AIR MOTOR, COAT O RING WITH VASELINE FOR EASIER INSTALLATION, TIGHTEN SCREWS, CONNECT THE CONNECTOR AND START IT UP......
AFTER I DID THIS THE PROBLEM WAS GONE !!!

 

TRY CELANING THE AIR MOTOR PLUNGER WITH CARB CLEANER AND CHECK VACUUM LINES FOR LEAKS

 

Don't use carb cleaner it will hurt thing, I was told to use tb cleaner

 

Thanks guys, I'll give that a try this wekend. Sems easy & harmless enough