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podemski
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Everything posted by podemski
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Failing emissions badly. please help
podemski replied to tonicinwhite's topic in 924, 931, 944, 951, 968 Series
How have you ruled out the Cat being bad? The Cats are TWCs, so NOx is converted to N2 and the Oxygen liberated is used to combine with CO to produce CO2 and with the Hydrocarbons to produce CO2 and H2O. So the Cat is clearly not doing its job. Treat correctly, the Cat should last the life of the vehicle. The major damaging factors to the Cat are; mechanical shock, oil smoke (cloggs the core) and unburnt fuel (causes excessive temperatures in the Cat and a 'core meltdown'). Your modification setup may be causing excessive unburnt fuel. You say it passed with this set-up in 2002, however it sounds like the Cat was coping with it then, however 4 years later it may be overwhelmed. I've just read your other post, you say you have smoking exhaust problems... Can you ascertain if it is oil smoke (bluish, hangs around a bit) or rich poorly burnt fuel (black, petrol smell)? How long has it been since you changed to 0ygen sensor? I had similar emission problems and that was the root cause. -
Where is the control unit for the door lock system located? I am suspecting my unit is bad as i can only lock the doors with the console switch, they will open only manually or with they key.