[Shotimes] EGR valve?

[Alan Fanning]

Per the Tech Q&A in the latest Car Craft magazine, the lack of a functioning
EGR can also lead to detonation under conditions when the EGR should be
operating  but isn't (i.e., light part-throttle), as the computer is
expecting it to be there.

    Alan

> The EGR is only for NOx emissions.  It
> dumps exhaust gas into the intake and because the gas is inert will limit
> the combustion temps.  At high combustion temps the nitrogen in the air is
> fixed with oxygen, this forms the NOx pollutant.  It will form nitric acid
> and is the main component in brown smog.
> 
> Paul Nimz
> '97 TR
> '93 EG mtx