'Anybody know how I can change the idle speed in my Santa Fe ?
REPLY: I went thru this with my Hyundai local Service Dept soon after i
got my 2002 SantaFe as i didnt like the unecessary high revs when the
car was first started (especially in sub zero temps). They said that
its just the way it comes from the factory. After a bit of questioning
and personal exploration, I learned the workings of the device that
controls Idle Speed on this SUV. Its a black colored device located
right next to the throttle valve assembly and its held on by 2 bolts
with a plug in wire harness. It is simple to remove . Inside, there are
two small holes about the size of a dime. I got some sheetmetal and cut
a perfect template to fit the entire flanged area of the Device . I then
made two smaller holes in the sheetmetal directly over the present holes
in the Device , used sealant on the perimeter of the sheetmetal template
(both sides), then applied it before putting the Device back on.
Started up the car, and the idle was too low and nearly stalled the car.
So, i removed it again , made the holes slightly larger in the
sheetmetal , and reassembled. Fired up the car and the idle speed was to
Before, the idle speed when cold, was almost 2,000 rpms and when warmed
up was 950 rpms. Now, it is 1200 rpms and 800 rpms respectively. I
picked up 1 mpg more in fuel economy and the transmission shifts far
smoother when going from Park to Drive and Park to Reverse.
Dont know if you want to go to the trouble as i did, but its a simple
permanent cure , doesnt cause any codes to come up, nobody can tell
from the outside of the Device thats its been altered, and has the
benefits as i described above.