How does the EGR system work on a Miata?
The EGR system recalculates exhaust back to the intake manifold to lower the oxygen content of the intake gases, thereby cooling the combustion chamber, which in turn lowers NOx emissions. This is done by opening and closing an EGR valve. The Miata’s computer calls for the valve to open and close based on a number of factors.
Why does an old catalytic converter fail a smog test?
In most cases, the reason why an old CC fails a smog test is because the smog equipment is calibrated too sensitively. The CC is still good and still does its intended job of blocking pollutants from the vehicle’s exhaust, but unlike a brand new CC, it is no longer sensitive enough to pass a smog test.
What causes a check engine light on a Miata?
This is done by opening and closing an EGR valve. The Miata’s computer calls for the valve to open and close based on a number of factors. If the computer senses that this is not being done properly (valve stuck open or closed or lines plugged), then the CEL is turned on.
What causes the cel to turn on on a Miata?
The Miata’s computer calls for the valve to open and close based on a number of factors. If the computer senses that this is not being done properly (valve stuck open or closed or lines plugged), then the CEL is turned on.
What does excessive EGR flow on a car do?
If the code is P0402, the diagnosis is excessive EGR (exhaust gas recalculation) flow. The EGR system recalculates exhaust back to the intake manifold to lower the oxygen content of the intake gases, thereby cooling the combustion chamber, which in turn lowers NOx emissions. This is done by opening and closing an EGR valve.
Is the MX-5 Forum part of miata.net?
MX-5 Miata Forum is part of Miata.net. If you haven’t yet visited Miata.net, or are not yet familiar with it, please go there first. There is a wealth of information and it will be very helpful to be familiar with its offerings before becoming involved in the forum. Miata.net also has a brief intro for new users.
The EGR system recalculates exhaust back to the intake manifold to lower the oxygen content of the intake gases, thereby cooling the combustion chamber, which in turn lowers NOx emissions. This is done by opening and closing an EGR valve. The Miata’s computer calls for the valve to open and close based on a number of factors.
This is done by opening and closing an EGR valve. The Miata’s computer calls for the valve to open and close based on a number of factors. If the computer senses that this is not being done properly (valve stuck open or closed or lines plugged), then the CEL is turned on.
If the code is P0402, the diagnosis is excessive EGR (exhaust gas recalculation) flow. The EGR system recalculates exhaust back to the intake manifold to lower the oxygen content of the intake gases, thereby cooling the combustion chamber, which in turn lowers NOx emissions. This is done by opening and closing an EGR valve.
The Miata’s computer calls for the valve to open and close based on a number of factors. If the computer senses that this is not being done properly (valve stuck open or closed or lines plugged), then the CEL is turned on.
What do you need to replace O2 sensor on Miata?
Be sure to confirm the issue isn’t related to exhaust leaks, the exhaust gas recirculation (EGR) system, vacuum leaks, the MAF sensor, etc prior to replacing the O2 sensor. The only tools required for this job are a decently long socket extension, a 3/8″ socket wrench, and one of these O2 sensor sockets.
Be sure to confirm the issue isn’t related to exhaust leaks, the exhaust gas recirculation (EGR) system, vacuum leaks, the MAF sensor, etc prior to replacing the O2 sensor. The only tools required for this job are a decently long socket extension, a 3/8″ socket wrench, and one of these O2 sensor sockets.