I have a high revving Ranger, what could it be?

[Lonesome7.3]

This is my first newer Ranger, I am usually into the first and second Gens. SO when my 2000 Ranger had issues I am not knowledgeable in their quirks. This truck has a 3.0 with a five speed. When in neutral and idling the RPMs rev up past 2000. What could cause this and what am I looking at to repair it?

 

[slims]

I know this one... It's a sensor.. I can't remember what it's called. Honda civics have this problem often.

 

[slims]

Map sensor

 

[Wyley87]

IAC?

Idle Air Control Valve

 

[slims]

Manifold absolute pressure sensor. Map not maf or mag. Stupid spell check..

 

[Lonesome7.3]

I was thinking it might the the TPS. Wait, does this truck even have one?

 

[slims]

What's tps? google map sensor.

 

[Lonesome7.3]

Throttle position sensor. I did not think of the MAP.

 

[Wyley87]

Could be TPS now that I think about it.

With out a scan tool the only thing I can figure is to just change it and see what happens.

My brothers 93 gmc 1500 did this. Scan tool revealed TPS at 100% all the time.

 

[ProZach]

I believe the 2000s still had the TPS.