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Removing and installing radiator outlet coolant temperature senderG83 > < Coolant pipes - exploded view

A4 Mk3

Removing and installing coolant temperature senderG62
Removing and installing coolant temperature sender -G62-
   
Removing
l  Engine cold.
–  Open filler cap on coolant expansion tank briefly and allow residual pressure in cooling system to dissipate.
–  Remove engine cover panel -arrows-.
  A10-10890
–  Unplug electrical connector -1- from air mass meter -G70-.
–  Unscrew bolt -3- and move clear exhaust gas pressure sensor 1 -G450--item 4- at air pipe.
–  Unplug electrical connector -2- and move air pipe clear.
–  Remove air hose and air mass meter -G70-. To do so, release hose clip -5- and clamps -arrows-.
  A10-10872
–  Unplug electrical connector -arrow- at coolant temperature sender -G62-.
–  Remove coolant temperature sender -G62-.
Installing
Installation is carried out in the reverse order; note the following:
l  Tightening torque → Chapter „Coolant pipes - exploded view“
  Note
t  Fit new O-rings.
t  To avoid loss of coolant, screw new coolant temperature sender -G62- into connection immediately.
t  Hose connections and air pipes and hoses must be free of oil and grease before assembly.
t  Secure all hose connections with the correct type of hose clips (same as original equipment) → Electronic parts catalogue.
t  To ensure that the air hoses can be properly secured at their connections, spray rust remover onto the worm thread of used hose clips before installing.
–  Install exhaust gas pressure sensor 1 -G450- → Rep. gr.23.
–  Check coolant level → Anchor.
  A19-10536

Removing and installing radiator outlet coolant temperature senderG83 > < Coolant pipes - exploded view