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1988 Chevrolet S-10
Problem for Chevrolet 1988 S-10

What is the purpose of an egr valve?




By rugrats_20 on Oct 16, 2009

" "
what is the purpose of an egr valve?
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Solution #1

posted on Oct 16, 2009
Not Rated)

clay58
clay58

Rank: Guru  Chevrolet Cars  Expert
Rating: 88%, 329 votes
An EGR (exhaust gas re-circulation) valve is designed to lower NOX (NO2) gases that occur in the combustion chamber when temperatures reach over 3,500 degrees Fahrenheit. NOX gases have been proven to cause brain damage in humans, therefore EGR valves have been mandatory on most vehicles since 1976. An EGR valve controls exhaust gases and allows them to enter the intake manifold and flow into the combustion chamber at certain times in the operation of the vehicle to reduce combustion chamber temperatures. Curtorsey: 2CARPROS
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Solution #2

posted on Oct 16, 2009
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hinkle123
hinkle123

Rank: Guru  Chevrolet Cars  Expert
Rating: 85%, 143 votes
exhaust recirculation helps with nox when you go through emissions


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