A 1994 940 should have a hole in the front under bumper area grille where the sensor is supposed to fit; should be in the right upper section of the grille when viewed from the front. No guessing and no zip tying should be necessary. Even then, some inaccurate reading when you first start the car should be expected especially in hot weather once the car is run and warm as the sensor will pick up reflected engine heat. A minute or two under way and the gauge should show the correct reading.

Dear 94 945T,

Hope you're well. I'm glad the installation went smoothly. You have it in the right place. I doubt the harness is long enough to allow movement far from its present place. Such movement isn't needful.

The sensor is accurate when the car is moving. Then, airflow pushes heat from the engine, away from the sensor. Airflow also dissipates heat from the road, an issue in summer: road surfaces can get hot enough to fry an egg. In summer, when the car isn't moving, the displayed temperature rises, as road- and engine-heat reach the sensor.

The only way to abate heat "contamination" might be to put the sensor near the headlights. I'm not sure that engine heat would any less. And, while there would be less road-heat (that is abated by airflow) the sun's heating of the hood would be a permanent source of inaccuracy, that airflow might not completely offset.

In short, where you have it is where Volvo's engineers intended it to go. I'd presume these engineers did the homework and so came to a sound conclusion.

Hope this helps.

Yours faithfully,

SPook