Stuck open thermostat.
Check your thermostat, it is either stuck open or not in the engine.
http://www.geocities.com/iverjohnsoncollector/
yes it runs off vaccum from the engine, it only works when the car is at cruising speed, not at idle or flat foot.
try replacing the thermostat
No............... Just let the engine get to its operating temperature and service it out at an idle only......
As long as the engine temperature doesn't move into the extremely hot range, then this is just normal operation for the engine's cooling system. When an engine is running at idle speed with the vehicle stopped, there is no air flow coming through the grill to assist in cooling the radiator. Only the engine's fan system is doing any of the cooling at idle speed. For this reason, the engine temperature will increase somewhat at idle in a non-moving vehicle. Once you start moving, even though the engine RPMs increase causing more heat, the air flow forced through the vehicle's front grill and through the radiator cooling fins compensates for the added heat and decreases the engine temperature. Note however, if the temperature is moving into the extreme hot area on the dash gage when the vehicle is idling and not moving, there may be issues with the engine's cooling system.
The name Gage contains only one syllable. The word is pronounced with a single stress point.
if its only on idle it sounds like a bad injector
No it will not. It only controlls the idle of the engine.
Low fluid level, incorrect or defective filter. Replace the filter with the proper AC/Delco filter and fill the system to full. Could be a bad sending unit for the gage. could be a bad gage. could be a bad oil pump, could be a bad filter. == New Answer Also have the same problem. Found that idle is set to low. Clasic problem with these models. Step on gas a little and light goes out. Have your idle adjusted just a bit.
need to replace the fast idle valve. they are only located a the dealership.... good luck need to replace the fast idle valve. they are only located a the dealership.... good luck
Fast idle motor is not working. This is allowing the idle to fall below the threshold of what it should be when the A/C is on.