How is the EGR system controlled by the solenoid?
The EGR system is controlled by the EGR control solenoid. When the EGR control solenoid is activated, a passage is opened up that allows exhaust gases into the intake manifold.
How is exhaust gas circulated in an EGR system?
Most EGR systems have a by-pass valve integrated with the EGR cooler. When the engine is cold, the exhaust gas is circulated directly into the engine.
When does the Check Engine light come on on an EGR?
Check Engine Light comes on. An illuminated Check Engine Light is another symptom of a bad or failing EGR control solenoid. If the computer detects an issue with the EGR solenoid, circuit, or system, it will set off the Check Engine Light to notify the driver of the issue.
What are the symptoms of a bad EGR system?
Symptoms of a Bad or Failing EGR Control Solenoid. The exhaust gas recirculation system, also known as the EGR system, is an emission system that is found on many road going cars and trucks. Its purpose is to recirculate exhaust gases that have exited the engine, back into the intake manifold so that they can be reburned.
Where is the EGR vacuum solenoid?
EGR vacuum solenoid is located below your EGR valve. Center your self on the engine, look between the rear of the engine and your firewall. You can see your the top of you EGR valve, there will be a small vacuum hose connected to the top.
Where is the EGR sensor located?
The EGR pressure sensor is located within inches of the EGR valve. The exact location varies depending on the engine (2.5L, 3.0L or 4.0L). It is usually attached to the upper intake manifold with two small bolts.
What does a bad EGR solenoid do?
One of the first symptoms of a possible problem with the EGR control solenoid is engine performance issues. If the EGR solenoid has any issues, it can cause the finely tuned air fuel ratio to be thrown off. This may result in a decreased power, acceleration, fuel economy, as well as an increase in emissions.
Where is the EGR valve located?
The EGR (Exhaust Gas Recirculation) valve is technically located between the exhaust and intake manifolds, since it recirculates exhaust gasses back into the intake.