Workshop Manuals Factory service & repair Alfa Romeo
Alfa Romeo 145/146 Engines, 146 Bodywork and Engine Overhaul Manual (1994-2001)01 · 1.7 16V Boxer engine (1712)
01 · Engine

Timing sensor

Make
Alfa Romeo
Model
145/146 Engines, 146 Bodywork and Engine Overhaul Manual
Year
1994–2001
Section
Electric - electronic components › Timing sensor
1.7 16V Boxer engine (1712)Timing sensor

TIMING SENSOR

The timing sensor (cam angle sensor) comprises a Hall effect device.

The voltage signal "lowers" sharply when the tooth machined on the camshaft drive pulley opposite the sensor passes in front of it.

Timing sensor and camshaft drive pulley

REMOVAL/REFITTING

  1. Disconnect the electrical connection of the timing sensor.
Hands disconnecting electrical connection of timing sensor
  1. Slacken the fastening screw and remove the timing sensor releasing the wiring from the fastening clamps.
Timing sensor being removed from engine

CHECKING THE AIR GAP

  • Remove the timing sensor (see specific procedure).
  1. Using tool N° 1.820.079.000 (A.2.0449), measure dimension "A".
Measuring dimension A with tool 1.820.079.000
  1. Using a gauge measure dimension "A".
Measuring dimension A with a gauge
  1. With a dial gauge check the value of "B" on the sensor.
Checking dimension B with a dial gauge
  • Calculate the air gap of the timing sensor and check that it is within the specified limits.
Air gap calculation: A - B = 1.5 mm

Parts & tools for this job For 1994 Alfa Romeo 145/146

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