ABH

Inj. and ignition system Motronic
Notes 
● Work sequence see Maintenance booklet   
● Check idling speed and CO content 
 (not adjustable). 
 
Visual check 
⋆ Vacuum hoses connected   
⋆ Crankcase breather connected   
⋆ Electrical wiring for the mixture preparation and ignition systems 
 connected   
⋆ Exhaust system must be free of leaks   
⋆ Lambda probe connected   
⋆ Activated charcoal filter system wiring connected   
⋆ Catalyst fitted and not damaged   
⋆ Reduced diameter tank filler neck fitted   

Test conditions 
● Electrical consumers switched off.   
● Air conditioner switched off. 
 Vehicles with automatic gearbox   
● Throttle cable adjustment OK.
   
Test figures for emission check 
  Engine oil temperature min. 80 ±C   
  Idling speed Manual gearbox   
  Min. 690 rpm  Max. 750 rpm   
  Automatic gearbox   
  Min. 650 rpm  Max. 770 rpm   
  Firing angle Cannot be tested   
  Maximum CO content at idling 0,5 CO vol %   
  Increased idling speed Min. 2500 rpm  Max. 2800 rpm   
  Lambda value Min. 0,97 Max. 1,03   
  Maximum CO content at idling boost 0,3 CO vol %   
  Engine speed for control circuit test Manual gearbox   
  Min. 590 rpm  Max. 850 rpm   
  Automatic gearbox   
  Min. 550 rpm  Max. 870 rpm   
  Control circuit _ Basic procedure DELTA-Lambda 0,03   
  Level of malfunction switching on/off   
  ▸ Maintenance   
  Bring catalyst to operating temperature Time 2 min Speed ó 2500/rpm   
Bar codes for emission testing 

Engine oil capacities 
  With filter change 7,5 ltrs.   

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Spark plugs

  Audi 101 000 052 AA, 101 000 029 AB   
  Manufacturers'   
  designations Bosch HGR 7 KOC,   
  NGK BUR 6 EFSZ