Quote:
Originally Posted by beno
The pipe leads to the back of the head where it recircs exhaust gases. That pipe itself can get up to 1000 degrees during operation.
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Hell almighty, that is hot. I am 100% convinced that the US market HG woes at cylinder 6 are due to this POS system. It obviously was necessary for Mr. T to get the pig to pass gubment standards, but I'm going to keep it disabled as long as possible.
I found this in the FSM:
"The recirculated exhaust gas lowers
the combustion temperature and NOx production is reduced. Under some driving conditions, EGR gases
affect driveability. Under these driving conditions, the ECM commands the VSV for EGR–cut to block the
engine vacuum source to the EGR valve. Blocking the vacuum signal allows the EGR valve to close and
stop recirculation of the exhaust gas to the intake manifold."
So I guess by blocking the tubes that ran from the TB that I have effectively neutered my EGR system.
That is unless that upper line in the diagram that runs from the VSV to just before the MAF has any influence on the system.
In other words, have I stopped the EGR valve and pipe from exhibiting temperatures of ~1000 degrees?