Rpm in neutral

[jimsea]

Have a 2003 ranger 4wd ext cab 40 engine and the governor kicks in @3000
Rpm when in neutral, is this correct or should it be higher?
It does run fine and will get up to almost 6000 rpm in 2nd gear on a hill


Ok I found the answer, it is called a rev limiter and is set at 3000rpm
In neutral and park. Could not find the reason for it, I assume
It is to protect the transmission, so you can't drop it in drive
At a high rpm, does this sound right? Anybody know when this
Started?

 

[rangerbum]

You are exactly right. It's to avoid high rpm neutral drops into gear, and avoid engine damage from the high rpms.

I would assume they started doing that around 2001, but that's just based on my experience with these trucks, not any factual references.

 

[jimsea]

Rev limiter

Thanks for the reply. I am not sure it is for over reving the engine because
It is not installed in the manual tranny. Why would they let you
Over rev in a manual, and not in an auto.

 

[RonD]

As far as I know manual also has REV limiter.
Some manuals have a neutral switch at the top by the shifter.
But Limiter can also be active if clutch pedal is in and/or speedometer is below 5MPH

I think the REV Limiter was added to some models with the start of the EEC-V computers, so as early as 1995, not sure when Rangers got it