The computer is not seeing a voltage drop across the coolant sensor. You could have a bad sensor, broken wiring, or a bad computer.
check/replace the engine coolant level sensor located in the engine coolant overflow reservior (located at the rear of the engine compartment pass. side)
Low coolant or bad sensor
There is one in the reservoir and one in the coolant tank. They probably replaced the one in the reservoir. My 96 is doing the same thing and the dealership replaced the one in the reservoir but the message is still coming up. I found out on another forum that it is the one in the tank that needs replaced. So I would check that out. Hope this helps. if its not the sensor,its the sensor plug.if that doesn't help it is the connection to the computer on the firewall.its in back of the coolant reservoir.ive never heard of the tank thing,no such thing also if there is air in your system, (air will enter from leaks in your system) when the air passes the sensor it throws out bad coolant sensor code, due to the rapid temp. change from that air bubble, if there is air in the system and not pumped out it can cause a blown head gasket, very expensive replacement
Yes, but it is not recommended to run straight water in the cooling system.
I have a 1998 Pontiac Grand AM GT that coolant sensor went bad. So how do you change it with out breaking the coolant
yes
this is normal,because the coolant temp sensor is supposed to be in direct contact with the cooling fluid in order to read its temperature
An engine coolant temperature sensor will usually need to be replaced when it is drawing too much or too little voltage. The sensor may also have a bad ground connection.
See a dealer
Likely a faulty coolant temperature sensor. Change the sensor.
the coolant sensor is in the radiator on the passanger side the oxygen sensor is in the exhaust system on the manifold and the pipes and sometimes both
The low coolant level sensor is located in the top of the coolant reservoir o n the drivers side behind the battery www.lextechautomotivellc.com
remove the two 10mm nuts. dissconnnect the coolant level sensor plug and remove coolant hose's
Locate and remove old coolant temperature sensor (disconnect electric connector and you should be able to loosen sensor with an open end wrench; if it's too tight, use a flared end wrench to break it loose). Catch coolant that spills out after sensor is removed, properly dispose of old coolant. Install new sensor in reverse order. Top off coolant. Clear trouble code & test drive vehicle to ensure vehicle performs to spec.
The guage on the dash uses the ONE wire sensor... This is located in the block near the drivers side. Eric First check to see if you have coolant in the radiator. If there is no coolant you will not get any reading from the temperature sensor. If there is coolant then change the temperature sensor.
Drain off about 2 qts of coolant from radiator petcock after engine has cooled. Unplug wire harness from sensor. Remove sensor with a counterclockwise motion. Coat new sensor with a thread sealant and install until snug. Reconnect harness and refill coolant reservoir. Recheck coolant level after useage.