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Try looking on the EGR valve underneath the intake manifold.
It is located in the intake pipe between the MAF sensor and the throttle.
Next to the thermostat. you will see it when you remove the hose
in mirror
between intake runner 3 and 4
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.
Connected to the intake air duct.
If a complete tune-up (with new ignition wires, plugs, air filter, cap, rotor) does not improve gas mileage, replace the coolant temperature sensor. The sensor is located under the intake manifold. Cost is about $39.00. Check the shape of the wiring socket to make sure you get the right sensor.
where is the crankshaft position sensor located on a 2002 Volvo S60 2.4 engine
Under the intake manifold.
where is the crankshaft position sensor located on a 2002 Volvo S60 2.4 engine
My 2002 has it in the drivers side mirror.