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Engine cooling > < Removing and installing oil pump

Octavia Mk2

Testing oil pressure and oil pressure switch
Testing oil pressure and oil pressure switch
Special tools and workshop equipment required
t  Oil pressure tester, e. g. -V.A.G 1342-
t  Voltage tester, e. g. -V.A.G 1527 B-
t  Measuring tool set, e.g. -V.A.G 1594 C-
Test conditions
l  Oil level o.k.
l  Engine oil temperature approx. 80°C.
Test preparations
–  Remove air intake pipe at lock carrier and air intake hose → Chapter.
   
–  Disconnect plug -arrow- at oil pressure switch -F1- and unscrew oil pressure switch -F1-.
  S17-0161
–  Screw the connection of the oil pressure tester -V.A.G 1342- into the hole for the oil pressure switch.
–  Screw oil pressure switch -2- into the oil pressure tester.
Testing oil pressure switch
–  Connect brown cable -1- of oil pressure tester to earth (-).
–  Unclamp the voltage tester with its auxiliary cables out of the measuring tool set on the oil pressure switch and plus (+) terminal on the battery.
l  The LED should not light up.
If the LED lights up:
–  Replace oil pressure switch.
If the LED does not light up:
–  Start engine.
  Note
Observe the testing equipment and the LED while actuating the starter since the switching point of the oil pressure switch can already be exceeded when starting up.
l  At 0.055...0.085 MPa (0.55...0.85 bar) the LED should light up.
If the LED does not light up:
–  Replace oil pressure switch.
Testing oil pressure
–  Start engine.
l  Oil pressure when engine idling: at least 0.08 MPa (0.8 bar)
l  Oil pressure at a speed of 2000 rpm: at least 0.2 MPa (2.0 bar)
If the specified values are not reached: Oil pump defective.
–  Replace oil pump → Chapter.
l  Oil pressure at a higher engine speed: maximum 0.7 MPa (7.0 bar)
If the specified value is exceeded: Pressure relief valve defective.
–  Replace oil filter holder → Chapter.
  S17-0157

Engine cooling > < Removing and installing oil pump