What controls "creep" speed in 1st gear ?

[repo]

The speed it goes when you put it in drive but dont give it any gas.

 

[absalom]

Engine compression and idle circuit? That's my answer at least, please don't take as definite

 

[JayRolla]

What he said along with the gears.

 

[CDNsldr]

The speed it goes when you put it in drive but dont give it any gas.

Manual or Auto? If auto, tq converter and fluid condition with have a significant impact as well as the grade of slope you're on and any driveline resistance (i.e. oversized heavy tires/rims etc). I'm not super up on tq converters but I'm pretty sure they don't lock up in 1st gear only 3rd+

 

[LiquidFlame]

Yes as others have said, its mainly your idle that controls your creep. Its like your ECU is giving a little gas to keep the car running, and if you were to change your idle, then you change the speed it creeps. Then you subtract the driveline loss like CDNsldr said.
My '02 Sport barely creeps at all, while my dads '00 SR5 wants to jump the line if you let off the brakes haha

 

[Mark_BC]

Here is an indepth explanation

 

[snow junky]

Your foot.


Sent from my iPhone using Tapatalk

 

[Tyler James Inc]

Idle speed.

 

[CDNsldr]

Idle speed.

Engine idle speed is only ever the MAXIMUM "creep" speed a veh with a torque converter will ever go (provided they're not creeping on a downslope)...which can be calculated mathematically using 1st gear ratio and final drive ratio (and t/case reduction if so engaged).

Jack your truck up with all 4 wheels off the ground and place it in D. The tires will spin a heck of a lot quick at idle than you will ever creep.

ANY resistance will take away from this. Road surface, headwind, veh weight, driveline wear, brakes dragging, cold or hot ATF etc

OP needs to clarify his question.