It means that one or more of the gauges is out of the safe zone.
Your fuel is low. Its telling you to check your gas gauge...
Not legally and not with out the check engine light coming on and staying on.
try looking at it
What gauge, there is no gauge, there is an illumination light that tells you your in 4 x4 mode, no gauge though.
common problem with 1998 mystique check engine light on
On a 1998 Ford Explorer ( like my 1995 ) Either your engine coolant temperature is too high , your engine oil pressure is too low , or your fuel gauge is at or near empty ( any of those 3 things will turn on the " check gage " warning light )
I assume it is the same as the 1998 Ford Explorer four door : There is a " CHECK GAGE " light ( just to the left and above the tachometer ) The light comes on if the engine coolant temperature is too HIGH , the engine oil pressure is too LOW , or the gas gauge is at or near empty
Check your coolant level.
You have 2 options. Either you put your catalytic converter back on or you unplug the check engine light. Thanks for killing the environment.
There could be a glitch on the computer in the vehicle. There could also be a ground in the wiring harness that goes to the gauge lights.
only if it sends back the right voltage to the computer.
it sounds like your primary coolant fan has quit and when you turn your A/C on it causes your secondary coolant fan to turn on and then cools the coolant in your radiator!