The engine coolant temp (ECT) sensor monitors the engine temp and sends that info to the engine control module (ECM). The ECM takes in info from many sensors including the ECT to determine the correct air/fuel ratio for the conditions. So to answer your question, yes. The ECT sensor does play a part in fuel control.
Likely a faulty coolant temperature sensor. Change the sensor.
the coolant temp sensor( cts) reads the temp of the engine and adjust the fuel air mixture depending on the temp. if its cold out the sensor will adjust for more fuel to ease the start of the engine. ADDITIONAL: The Coolant Temperature Sensor measures the temp of the coolant, not the engine. The sensor controls the thermo fans on/off. depending upon temperature. The actual engine temperature sensor is on top of the engine and does not control the fans. If the fans do not switch on at any temperature, disconnect the 2 wire connector from the sensor (Usually at the bottom of the radiator) If fans start up with connector disconnected, replace the sensor.
Yes, the 1999 Oldsmobile Bravada is equipped with a cold start sensor, often referred to as the coolant temperature sensor. If your Bravada will not start when cold, a common culprit is the coolant temperature sensor itself, which may be providing incorrect readings to the engine control module (ECM). Other potential issues could include the fuel system, battery, or spark plugs, but the coolant temperature sensor is a key component to check first.
The coolant sensor moniters the coolant temperature. A faulty thermostat could cause the engine to run cool.
There is NOT a choke on any fuel injected engine. The coolant temperature sensor does the job of what used to be the choke. When the coolant in the engine is cold, the coolant temperature sensor tells the engine control module and it determines how rich or lean to make the engine run. You can use a scanner to see if it and all the other sensors are doing the job they are meant to perform.
Try replacing the engine coolant temp sensor.
Engine coolant sensor may be bad
Faulty ECT (engine coolant temperature) sensor. Replace it.
The low coolant light on a 1999 Buick Regal with a 3.8L engine may remain illuminated until the engine reaches a certain temperature due to a faulty coolant level sensor or a problem with the cooling system. If the coolant level is adequate but the sensor is malfunctioning, it may incorrectly signal low coolant. Additionally, if the engine is cold, the coolant may not circulate properly, causing the sensor to read low until the engine warms up and the coolant expands. It's advisable to check the coolant level and sensor functionality to diagnose the issue accurately.
The sending unit is only to control the temperiture warning light/gauge on your dash. If you are referring to the sending unit in your overflow tank it just turns your low coolant light on. The temperiture sensor is used to feed engine temperiture data into the computer, to caculate how much fuel the engine will get during cold start up etc. It is simply input data for the computer.
The engine coolant temperature sensor is probably at fault.
Add coolant to the full cold line on the coolant reservoir when engine is cold.