Posts Tagged: TPS
Throttle position sensor TPS
Diagnose and replace throttle position sensor TPS What does a throttle position sensor do? A throttle position sensor is a potentiometer that changes voltage as it moves. It’s tells the ECM how far the driver is opening the throttle. In older vehicles it’s mounted right on the throttle body. However, in newer cars, the TPS is located right on the gas pedal inside the cabin. The manufacturers eliminated the cable to the throttle body and rely instead on stepper motors to open and close the throttle plate. What goes wrong … Read More
TIre pressure light on when temperature drops
Tire pressure light on in cold weather — How to turn off the light There is a direct relationship between outside temperature and tire pressure. As a general rule, tire pressure changes 1-psi for every 10° change drop in outside temperature. So if outside air temperature decreases 30° from your last tire pressure adjustment, expect tire pressure to drop about 3 psi. However, the change is not linear. In extremely cold weather, the rate of pressure drop can be greater than 1-psi for every 10°F change in outside temperature. So, … Read More