What is Toyota EGR?
What is an exhaust gas recirculation (EGR) valve? The EGR valve in your Toyota is fitted within the exhaust system and allows some of the gases produced during the combustion process to be re-burnt within the combustion chamber for a second and more effective time.
Where is an EGR valve located?
intake manifold
The EGR valve is usually located near or attached to the intake manifold, with a tube running to the exhaust manifold. There should also be a vacuum or electrical connector (or both) running to the valve which will need to be detached.
Can you drive a car with a faulty EGR valve?
Can I drive with a bad EGR valve? Technically, you can drive your vehicle with a bad EGR valve, but your vehicle will run rough, shake at idle, and a check engine light will be illuminated. You might also hear popping sounds while driving down the road.
What causes EGR valve failure?
The failure of the EGR valve on the vehicle is not out of the ordinary, as this issue can arise on most modern diesel engines. The failures are usually caused by a build-up of deposits in the EGR valve over a period of time that causes them to stick.
Where is the EGR valve located on a Toyota?
“Where is the EGR Valve on my 1999 Toyota Camry ?”. The EGR Valve is located between the firewall and the top, side of your engine. Always check the rubber hoses here, since cracks and abrasions on these pressurized hoses can give EVAP system error codes easily.
How serious is an EGR valve?
If the EGR valve is stuck open, it will essentially cause a vacuum leak, leading to inefficient combustion, rough idling, hesitation, and sometimes stalling in extreme cases. This is because the car cannot combust on carbon dioxide from the tailpipe — it needs atmospheric oxygen.
What is the main function of an EGR valve?
The function of the EGR valve is to recirculate small amounts of exhaust back into the combustion chambers of the engine in order to decrease the combustion temperature, thereby reducing the formation of smog-producing nitrogen oxides. EGR valves can malfunction by becoming stuck open or closed due…
How often does an EGR valve need replacing?
EGR valves rarely require maintenance or repair and they also rarely need to be replaced. An EGR valve can sometimes become clogged, however, with carbon deposits, resulting in a valve that sticks or does not close completely.
