= EGR Theory. EGR serves one purpose and one purpose only. That purpose is to reduce Oxides of Nitrogen (NOx). Undernormal combustion, Nitrogen(N2)Oxygen (O2) in the air and Hydrocarbons (HC) in the fuel combind into water(H2O) Carbon dioxide (CO2) and the Nitrogen remains unchanged. Under very hot combustion temperatures, the Nitrogen reacts with the other two byproducts and forms Nitrogen oxide (NO). After being released into the atmosphere, it picks up another Oxygen and becomes Nitrogen dioxide (NO2). In the presence of sunlight,
it combines with other compounds like Hydrocarbons and forms Smog. Since exhaust gas is inert (very stable) it doesn't burn again. So by being introduced into
the combustion chamber, it will lower combustion chamber temps enough so that
the Nitrogen doesn't react with the other compounds and is passed unchanged out
the tailpipe thus not contributing to smog. Now, since exhaust gas doesn't burn, it
doesn't exactly help with combustion. At higher RPM's, this really isn't noticable,
but at idle, the reintroduction of exhaust gas will cause a very rough idle and can
cause stalling if to much is introduced into the combustion chamber = = EGR Valve = 4.2L, 4.6L, 5.4L and 6.8L Engines 1. Disconnect the negative battery cable. 2. Remove the vacuum hose from the EGR valve. 3. On the 4.6L engine, remove the nut and brake booster bracket. 4. On the 5.4L engine, remove the DPFE sensor retaining nuts and place the sensor to the side to allow access to the EGR tube. 5. Disconnect the EGR valve-to-exhaust manifold tube from the EGR valve. 6. Remove the EGR valve mounting bolts, then separate the valve from the intake manifold. 7. Remove and discard the old EGR valve gasket, and clean the gasket mating surfaces on the valve and the intake manifold. To Install: 8. Install the EGR valve, along with a new gasket, on the manifold, then install and tighten the mounting bolts. 9. Connect the EGR valve-to-exhaust manifold tube to the valve, then tighten the tube nut to 25-35 lbs. (34-47 Nm). 10. Connect the vacuum hose to the EGR valve. 11. On the 5.7L engine, install the DPFE sensor. 12. On the 4.6L engine install the brake booster bracket and the retaining nut. 13. Connect the negative battery cable.
It is on the back of the engine under the wiper area
it is in with the EGR valve system
right in back of the intake by the fire wall. Hard to see and replace. Not recommended to DIY ...
get a bigger air intake K&N unpluge your EGR vavle
The 2004 Cummins does not have EGR.
does a 2004 grand am ,2.2 l have a egr valve
i want to know if a 2004 grand am , 2.2 engine has a egr valve
it is part of the egr valve
A 2004 Dodge Ram with the 5.9L Cummin's does not have EGR.
The 2004 Dodge Durango EGR valve can be found on the firewall in the engine compartment. The EGR valve will be on the passenger side of the firewall.
the egr valve on a 2004 impala should be on the drivers side of the engine. It is located at the rear towards the firewall.
The egr valve should be in the top of one of your valae covers.