1997 Chevy Cavalier EGR vaulve

Tiny
NOTTOCARWISE
  • MEMBER
  • 1997 CHEVROLET CAVALIER
  • 4 CYL
  • FWD
  • MANUAL
  • 178,000 MILES
My check engine light came on so I looked up the code and it siad I need to replace egr vaulve. Could I still drive my car before replacing it without having to worry about further messing up my car?
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Sunday, December 30th, 2007 AT 11:19 PM

2 Replies

Tiny
MHPAUTOS
  • EXPERT
Hi there,

You will be able to drive with it malfunctioning, but your emissions will be way out of acceptable levels, the reason why is that.

The Exhaust Gas Recirculation (EGR) valve sends some of the exhaust gas back into the cylinders to reduce combustion temperature. This is required because nitrous oxides (nasty pollutants) form when the combustion temperature gets above 2,500 degrees F. This is as a result of the formation of nitrous oxides when the nitrogen in the air mixes with the oxygen. When it s sunny, the nitrous oxides from the exhaust get together with the hydrocarbons in the air to form smog. This is when the EGR valve comes in handy. By recirculating some of the exhaust gas back through the intake manifold to the cylinders, we can lower the combustion temperature. Lowering the combustion temperature lowers the amount of nitrous oxide produced. Consequently, less of it comes out the tail pipe.

Mark (mhpautos)
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Sunday, December 30th, 2007 AT 11:33 PM
Tiny
THEIAKAI
  • MEMBER
Hi,
I had the same code come up when I ran my test on my 1997 cavalier, 230,000 miles. My car has recently to begin to run hot and I am trying to figure out what is wrong with it. I was wondering if the EGR valve might be causing this.
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Thursday, March 27th, 2008 AT 9:37 PM

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