1998 Volvo C70 2D Convertible, AutomaticFACTORY OEM SERVICE PROCEDURE

Checking exhaust system: Procedure

Fig 1: Checking Exhaust System For Leaks Between Cylinder Head & Rear Heated Oxygen Sensor
GLL100908Courtesy of VOLVO CARS OF NORTH AMERICA.
  • Check exhaust system by spraying soapy water on all joints and connections between cylinder head and rear HO2S.
  • Only extremely small and slowly increasing bubbles are permissible.
Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.

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