Why would my check gage light come on if all of my gages are ok? Oil pressure is good, engine temp is good, fuel level is good, and battery is good. No other dash lights come on. Are there other “secret” reasons for the check gage light? Lol

 

Welcome to the forum

What YEAR ranger?

May need engine size as well?

 

Sorry. 2002 Ranger 4x4
4.0 V6 with an automatic tranny.

 

Do all the warning lights work properly during the initial key-on phase, such as check engine light, etc?

Also - any chance you could get a photo of the cluster with the check gauge light on?

 

All warning lights work properly. I will get a pic of the cluster when it comes on again. It comes on and off and I can’t quite see a rhyme or reason yet.

 

Check Gauge light is operated by the Anti-Slosh Module, just called slosh module now

Slosh module was originally used just for the Fuel gauge, to prevent the needle from going up and down every time you went around a corner and gasoline in the tank "sloshed" from one side to the other.

Ford added "low fuel" light to it for a few years and then wired it to oil and temp gauges and changed it to "check gauge" light, so it just monitors those 3 gauges

Slosh modules did fail, usually causing fuel gauge issues, but also "check gauge" light

Anti-slosh module is in the back of the instrument cluster, but look at the gauges closely with engine running, failing oil pressure sender/switch can trigger light same for fuel sender with a dead spot.
The module prevents the fuel needle from moving quickly, so if the sender/float in the tank has a dead spot the light will come on and off but gauge won't react, and since the fuel does" slosh" around when driving, sender can hit a dead spot(0 ohms) in a wide range of fuel levels, so keep an eye on light when cornering

 

That's great info, Ron! Lots of things I wasn't previously aware of.

 

Ok thank u! Def some good info. I’ll be sure to update on what I found.