High RPM's at every single start up
Guys, need your help here.
My truck on every start up, the RPM's will rise to about 1500 or more, then slowly lower to about 1200 and then after about 4-5 minutes, it will drop to 1000 and after a longer while, and driving it, it will drop to 750.
It does that every single time, it doesn't matter if the truck was driven before (warmed up) or not (cold start).
Does anybody have an answer for this?
I just don't like it to be to accelerated for too long, it's a waste of gas, It's also annoying because I do several short trips (less than 5 minutes), and then I have to start it again, and again, high RPM's.
The check engine light is not on, once the rpm's drop, the engine is super steady, no rough idle.
Tell me what do you guys think I can do to fix this? or is this something very common on Rangers and I will have to live with it?...