Question about Buick Century
A variety of sensors provide information to the ECM/PCM regarding engine operating characteristics. These sensors and their functions are described below. Be sure to take note that not every sensor described is used with every engine application.
Coolant Temperature (ECT)
The Engine Coolant Temperature Sensor (ECT) is a thermister (a resistor which changes value based on temperature) mounted on the engine coolant stream. As the temperature of the engine coolant changes, the resistance of the coolant sensor changes. Low coolant temperature produces a high resistance (100,000 ohms at 40°C/40°F), while high temperature causes low resistance (70 ohms at 130°C/266°F).
The ECM/PCM supplies a 5 volt signal to the coolant sensor and measures the voltage that returns. By measuring the voltage change, the ECM/PCM determines the engine coolant temperature. The voltage will be high when the engine is cold and low when the engine is hot. This information is used to control fuel management, IAC, spark timing, EGR, canister purge and other engine operating conditions.
A failure in the coolant sensor circuit should either set a Code 14 or 15. These codes indicate a failure in the coolant temperature sensor circuit.
It looks like the above, under hood, passenger side, upper engine area, mounted in front side of water outlet (according to Autozone.com).
Posted on Oct 08, 2010
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
Tips for a great answer:
Oct 01, 2010 | 1998 Buick Century
Aug 31, 2010 | 2001 Buick Century
Jun 01, 2010 | 1994 Buick Century
Mar 18, 2010 | 1992 Buick Century
Mar 17, 2010 | 1993 Buick Century
Feb 25, 2010 | 1999 Buick Century
Feb 05, 2010 | 2000 Buick Century
Dec 20, 2008 | 2000 Buick Century
857 people viewed this question
Usually answered in minutes!