So week 1 as a new 2009 Ford Ranger XLT Supercab with the 4.0L and I have a question?

What should my warm engine idle speed be? I have just over 10,000.

Mine seems to bounce between 1000 and 1250 rpms. I can be approaching a stop at say 25 MPH and pop the transmission into neutral and the revs will spike to 1500 and stay there until I come to a complete stop. It then rolls back to 1100-1250.

I can me rolling along at 35 MPH in OD, on a flat at about 12-1300 RPM, take my foot off the gas and pick up speed until I hit 1500 rpm.

 

i know mine sorry not 4.0 idles high when cold even while driving until the engine is warmed up in the mornings i leave and have 3 stop signs in a row and it will almost drive itself between them with out me ever hitting the gas lol

 

good? my 04 5speed does that too. tps mayb

 

push clutch in, come to stop and pop into neutral mine idles at about 750 to 850

 

mine usually does too but sum time hangs a higher rpm 2, so did my lil cousins 04 he took it to ford a few years ago and i think he said they changed the tps, i cant remember been to long ago lol

 

I had the local Ford dealer take a look at it under warranty. I wasn't crazy. They replaced the IAC (Idle Air Control Valve). It now idles at 750-800 and it doesn't feel like it wants to jump away a stop.

Thanks for the input.