It you remove the EGR from the vehicle you can either just spray it out or let it soak in a shallow bath of carburetor cleaner. Since is simply pulls exhaust gasses from your exhaust and introduces them back into your engine's intake air it only makes sense that eventually it will become clogged or stuck open/closed from the carbon deposits. I am 16 and I do not have a lot of money is there an easy fix(CHEAP!!!!!!!). I took it to a mechanic and they fixed but recently it happened again, it did at about 55 MPH but it does not have a rough idle any more but the light is still on. One day I was coming off the highway and had to press on the brakes with alot of force, then the SES light came on and it idled roughly. I have 94 Chevy Blazer, with the 4.3 liter Vortec. Does the shaking has anything to do with EGR valve? I just did wheel balance and the car is 90K mile. In the mean time, I feel shaking when the car runs between 45-55 miles. The service engine light keeps on and indicates EGR valve related. I have a 2000 sl too and my SES light keeps coming on and I only have 13,000 miles on it and I took it to the dealership and they told me they have to replace the fuel tank, is that associated with the EGR valve? The expense is almost $500, I too, want to know what damage can it do to my car if I don't repair quickly? ![]() What basically is the function of this valve and by ignoring the indicator can I do damage to my car? Doing a cross-reference of the code it indicated something to do withe an EGR Valve. I was advised the code was P1404 when I had it checked. I currently have a 2000 sl and just recently my Service Engine Light came on. At higher RPM’s, this really isn’t noticable,īut at idle, the reintroduction of exhaust gas will cause a very rough idle and canĬause stalling if to much is introduced into the combustion chamber Now, since exhaust gas doesn’t burn, itĭoesn’t exactly help with combustion. The tailpipe thus not contributing to smog. The Nitrogen doesn’t react with the other compounds and is passed unchanged out The combustion chamber, it will lower combustion chamber temps enough so that Since exhaust gas is inert (very stable) it doesn’t burn again. It combines with other compounds like Hydrocarbons and forms Smog. After being released into the atmosphere, it picks up another Oxygen and becomes Nitrogen dioxide (NO2). Under very hot combustion temperatures, the Nitrogen reacts with the other two byproducts and forms Nitrogen oxide (NO). 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. That purpose is to reduce Oxides of Nitrogen (NOx). ![]() EGR serves one purpose and one purpose only. I'd say you're better off having a mechanic or experienced friend do it for you.ĮGR Theory. ![]() By sending warmer gas into the combustion chamber, the air/fuel mix does not have to do as much work to heat up, and your engine runs more efficiently.Īs far as fixing it yourself, it's an electronic part. Exhaust gas is routed back into the combustion chamber because the exhausted air is much hotter than the intake air (try touching a muffler sometime). The EGR stands for Exhaust Gas Recirculation. What is the function of the egr valve? Can it be repaired or does it need to be replaced?
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