[Fwd: Re: [DML] Re: Failed emissions!!!]

[Robert Brandys <BobB@xxxx>]

Adam

> IT SOUNDS LIKE YOUR CAR HAS A VOLTAGE(AMPERAGE) SUPPLY PROBLEM. THE SOUND YOU HEAR WHEN THE FANS ENGAGE IS THE ALTERNATER GENERATING MORE POWER. THIS PUTS A STRAIN ON THE ALTERNATOR BELT AND THE BEARINGS AND BRUSHES MAKE MORE NOISE. 

WHEN WAS THE LAST TIME YOU INSTALLED A NEW BATTERY? I HAVE SEEN CARS 
WITH BATTERY/ALTERNATOR PROBLEMS DO STRANGE THINGS. I WOULD SUGGEST 
TRYING A NEW BATTERY WITH AT LEAST 900 CCA. (YOUR DWELL VARIATION 
POINTS IN THIS DIRECTION. I WOULD ALSO PUT ON A LARGE ALTERNATOR 
(FROM DARRYL) AND CLEAN YOUR GROUNDS.

AS FOR THE RELATIONSHIP BETWEEN CO, HC AND NOX. IT IS A BIT COMPLEX. 
HOWEVER, AS THE MIXTURE BURNS MORE EFFICIENTLY, THE COMBUSTION 
TEMPERATURE INCREASES AND THE NOX DOES INCREASE.

HOWEVER, YOU CANNOT DIRECTLY MESSURE THIS AFTER THE CATALYTIC CONVERTOR 
BECAUSE IT CHANGES THE CO AND HC READINGS AND MORE MODERN CONVERTORS 
ALSO REDUCE NOX.

BOB


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