Tuesday, January 21, 2014
How to Check the Temperature Control Sensor on a 1997 Chrysler Concorde 3 5 Engine
The Chrysler Concorde, also known as the sister car to the more popular Dodge Intrepid, came from the factory with two V-6 engine options; a 2.7-liter engine and a more-powerful 3.5-liter engine. Of the two engines, the 3.5-liter engine was noted for its increased reliability over the smaller engine, which was prone to oil sludge problems. To help control and monitor the engine temperature, the 3.5-liter engine contains a coolant temperature sensor, located on the thermostat housing at the front of the engine.
Instructions
- 1
Start the engine and allow it warm to operating temperature, which is 200-degrees Fahrenheit.
2Locate the coolant temperature sensor on the top of the thermostat housing. Its mounted vertically and has two wires protruding from its base.
3Disconnect the coolant temperature sensors two-wire electrical connector. Measure the resistance across the sensors two terminals with a digital multimeter; the specified value is 700 to 1,000 Ohms.
4Let the engine cool down for three to four hours until the coolant is at room temperature. Measure the resistance again across the terminals with a digital multimeter. The resistance at 70-degrees Fahrenheit should be between 7,000 and 13,000 Ohms. If the resistance falls outside either of the hot or cold values, the sensor must be replaced.
5Measure the resistance across the pin terminals on the sensors electrical connector. If the resistance is greater than 1 Ohm, replace the sensors connector.
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