I posted pictures on the location and replacement of an ambient temp. sensor for a 2001 S40. Google "ambient temperature sensor location/replacement" or go to Matthew's Volvo site and search there.
To replace the map sensor on a 2003 Volvo S40, first, locate the sensor, which is typically found on the intake manifold. Disconnect the electrical connector and remove the screws securing the sensor. Replace it with a new sensor, ensuring it is properly seated, then reconnect the electrical connector. Finally, start the engine to check for proper operation and any error codes.
Next to the thermostat. you will see it when you remove the hose
Most engines have the temperature sensor either at the top water inlet or on the side of the block. Remove the sensor wiring, then unscrew the sensor to replace it.
Where is the transmission fluid temperature sensor on a 1998 Honda accord and how do you replace it?"
I'm not sure what you're asking, but if you mean that you are getting an OBD-II diagnostic code of P0128 from your Volvo S40, that code corresponds to a problem with coolant temperature. On a first generation Volvo s40 (99-04), this usually means that the thermostat or electronic coolant temperature sensor are malfuctioning or have failed.
Remove the tail gate then replace water temperature sensor.
To change the gear position sensor on a Volvo S40, first, ensure the vehicle is securely parked and the ignition is off. Locate the sensor, typically found near the transmission, and disconnect the electrical connector. Remove the mounting bolts securing the sensor, then replace it with the new sensor and reattach the bolts and connector. Finally, test the vehicle to ensure proper operation of the sensor.
Camshaft sensor is located at rear end of rear camshaft(near driver). It is screwed on the little bowl and has a connector attached to it. The little bowl contains the camshaft sensor gear , do not unscrew if not necessary , just replace sensor. Jules
To replace the MAP sensor on a 2002 Volvo S40, first ensure the engine is cool and disconnect the negative battery terminal. Locate the MAP sensor, which is typically found on the intake manifold. Remove the connector by pressing the tab and pulling it off, then unscrew the sensor from its mounting. Install the new MAP sensor by reversing these steps, ensuring it is securely fastened and the connector is properly attached. Finally, reconnect the battery and start the engine to check for proper operation.
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On a 2003 Volvo S40 2.0T, the engine temperature sensor is typically located near the thermostat housing, which is on the engine block. You may need to remove some components for easier access, as it can be somewhat hidden by other parts. It's advisable to consult the vehicle’s service manual for precise details and diagrams.