Possible causes: Insufficient/no coolant in the system; insufficient antifreeze in the coolant and the coolant is frozen: the water pump is faulty and is not circulating the coolant; the belt that drives the water pump is loose or missing.
thermostat stuck
You have a bad fan clutch..............
my o6 chevy impala is lighting up on the dash that the engine is hot but the gauge is saying its cold what is wrong and how can i fix it?
That is normal, It is a thermostat
If it still blows cold when it is at running temp, check the engine thermostat, its probably stuck in the open position.
If the air conditioning pump in the 1993 Chevy Z24 blows perfectly, but won't get cold, it is possible that the Freon needs to be recharged in the air conditioning unit. This can usually be done for about $40 by the consumer.
checked antifreeze level???
It has a bad "Blower Motor Resistor" The fan switch itself is fine.
Low on coolant, Stuck open thermostat, Plugged heater core, Faulty blend door actuator,
With the engine cold, remove the cap on the power steering pump. Inside the cap is a dipstick with a marking for both the cold and hot fluid levels
can you please clarify what you mean, do you mean that the front heater blows cold but the rear blows hot or do you mean that when the heating is on cold it blows hot? many thanks paul
No , not to the top , there should be a mark for cold and hot or minimim / maximum something like that . Just maintain the coolant level up to the cold mark when the engine is cold