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The EGR (Exhaust Gas Recirculation) directs exhaust gasses into the engine's combustion chamber via the intake manifold. The exhaust gasses are inert (do not support combustion) and displace oxygen that would normally be drawn into the engine during the intake stroke. Think of the engine as a vacuum pump and can only draw in a fixed amount of oxygen to be mixed with the fuel for ignition. The reason that exhaust gasses are drawn into the combustion chamber is to cool the exhaust. With less Oxygen in the fuel mixture the flame burns cooler and cooler exhaust temperatures result in lower NOX (oxides of nitrogen) emissions.
What else can I help you with?
Where is the egr valve located on an h22a4?
The EGR valve is located at the front of the h22a4 engine. The EGR valve is right beside of the front of the EGR valve.
Can a bad EGR valve cause high hydrocarbons?
Yes, the EGR valve, or port EGR
What is the purpose of the EGR valve position sensor on a 1994 Explorer XLT?
The PCM controls the EGR valve, so the EGR position sensor tells the PCM what position the EGR valve is in, so it can control the EGR valve and ake other necessary adjustments.
How do you diagnose egr valves sticking on a 2001 dodge durango?
It doesn't have an Egr valve.It doesn't have an Egr valve.
Where is the EGR valve on a 1993 Pontiac 23?
As I recall, that engine does not have an EGR valve.
How do you change the EGR valve in an Aspire 1994 automatic?
There is no EGR valve on an Aspire.
Where is the EGR valve on 1994 Oldsmobile achieva 2.3l?
There is NOT an EGR valve on this engine.
Does 2000 Hyundai tiburon have egr valve?
does a Hyundai tiburon have a egr valve
Where is the 2001 Wrangler Jeep EGR Valve located?
It doesn't have an egr valve.
Where is the egr valve solenoid located on a 2005 dodge stratus?
On the egr valve.
Where is EGR Valve on 2002 Mercury Mountaineer?
The 2002 Mercury Mountaineer EGR valve can be found in the engine compartment, on the firewall. The EGR valve will be labeled as such.
Where is egr valve on 1993 cutlass ciera?
The EGR is the acronym for exhaust gas recirculation valve. The 1993 Cutlass Ciera does not come equipped with an EGR valve.
