2010 Ford ranger XLT 2.3 LTR. 4 cyl....idles perfect..temp good...engine light on not flashing..get a P0116 code...can't get above 40 without hesitation or bogging...am I in limp mode and why?
P0116 engine temp unit...temp stays perfect wtf

 

Welcome to the forum

P0116 Engine Coolant Temperature Circuit Range/Performance Problem

Change the CHT(cylinder head temp) sensor, its in the head/valve cover, between cylinder 3 and 4 I believe
Make sure the 2 wires and connector look OK
Not an uncommon issue on the 2002-2011 2.3l Ranger

The 2010 doesn't have a real temp gauge if that's what you are basing "temp stays perfect" on
2004 and up Rangers use a digital dash, so engine computer(PCM) feeds the dash most of the gauge info

If you have or can get an OBD2 reader that has Live data you can see what PCM sees from the current CHT sensor, and maybe why it set that code

You can buy Bluetooth OBD2 reader for $10-$20
It works with a FREE APP on your smartphone to display codes and Live Data as you drive
These work with ALL vehicles, 1996 and up, sold in the US and Canada, its the Law, so not a Ford thing
Its a good tool to have in the box

 

Yep,I have an obdII that's how I got the code...just reset all dash codes and truck ran perfect...75 mph I a heartbeat for a 4 cyl ranger....I'm gonna try the engine temp cesor first...will update....and just saying I'm going back to a straight body big block with points...