By adding coolant to the overflow reservoir, if it does not turn off when at the proper level the sensor is most likely faulty.
Check that you have enough antifreeze in the overflow recovery unit there is a switch inside that lets you know the fluid is low -- the light should go out by it'self if the level is above the sensor
how do you reset engine light on 1991 volvo 240
reset the brakelamp light on the dashboard - Honda prelude 1991
How do you reset the check engine light on a 1991 mercedes Benz 560 Sel
To reset the service CCR light on a 1991 Eldorado, disconnect the battery for 10 minutes. Reconnect it and start the car.
enter code 11122, that should work. I needed the radio code for my 1992 Mecedes 190E, after the battery had been disconnected, so I called the dealer, who gave me the 4 digit code over the phone, no charge. I called and the code they gave me was shorter for a 190e it is 1133
There is no reset for a check gauges light. If the light is on, there is a problem either with the temperature oil pressure or voltage.
problem with the coolant sensor check the connection on the sensor reset your OBD I code if that don't work replace the coolant sensor
I have a 1991 190e 4 cylinder with the same problem - in cold weather the engine does not warm up. I know that I have a head gasket leak due to oil in coolant. I changed the thermostat but no improvement. I suspect the head gasket leak somehow affects the working of the thermostat or circulation of the coolant.
Have vehicle scanned to determine the problem
how to add coolant to 1991 lumina?
Yes it does.