When did corvette start using exhaust gas recirculation?
When did corvette start using exhaust gas recirculation?
1984-1996 Corvette EGR Diagnosis. Exhaust Gas Recirculation (EGR) came about in 1975 when catalytic converters were introduced. The inert exhaust gas was used to quell the increased heat in the engine’s cylinders from the lean fuel mixtures required to keep the catalytic converters from melting down.
Why is there no SES light on a 1984 Corvette?
This pulsing action prevents too much EGR gas from entering the engine and causing an overly lean condition. GM did not have to monitor EGR operation closely on the 1984 vehicles so there is no Service Engine Soon (SES) light illuminated if the system fails. The 1985-1989 Corvette was a different story.
Where is the oxygen sensor located on a car?
This information is used by the Powertrain Control Module (PCM) to determine the correct air to fuel ratio for your engine in real time. The sensor is located in the exhaust system and allows the fuel injection and engine timing to work efficiently, which assists with emissions control.
What are the symptoms of a bad oxygen sensor?
Symptoms of a Bad or Failing Oxygen Sensor 1 Check Engine Light comes on The first line of defense is the Check Engine Light. 2 Bad gas mileage and rotten egg smell If the oxygen sensor is going bad, the fuel-delivery and fuel-combustion systems will be thrown off. 3 Rough engine idle and misfires
What does negative back pressure do on a corvette?
The negative back pressure version is used on all of the 1984-1991 Corvette engines. This is a bit of a misnomer in the way that may sound; the EGR valve’s internal check valve will evacuate any vacuum holding the valve open, when the engine is running. The exhaust pressure present in the EGR system will open the check valve closing the valve.
What causes stalling on a 1984 Corvette crossfire?
A failing control valve solenoid can cause stalling and poor or very rough idle on the 1984 Corvette Crossfire engine. The 1984 engine uses a manifold vacuum source to operate the EGR valve so a strong vacuum flow from a stuck open control valve solenoid would allow EGR to flow at idle.
The negative back pressure version is used on all of the 1984-1991 Corvette engines. This is a bit of a misnomer in the way that may sound; the EGR valve’s internal check valve will evacuate any vacuum holding the valve open, when the engine is running. The exhaust pressure present in the EGR system will open the check valve closing the valve.
Why does my Corvette C5 engine keep misfiring?
Tracking down the issue of why your C5, C6 or C7 engine is misfiring is not easy. That’s because a misfiring engine can be caused by many mechanical problems. One way to detect a misfiring engine is by sensing the Corvette’s engine stumbling momentarily before regaining power. The engine can jerk or run rough as a result.
This pulsing action prevents too much EGR gas from entering the engine and causing an overly lean condition. GM did not have to monitor EGR operation closely on the 1984 vehicles so there is no Service Engine Soon (SES) light illuminated if the system fails. The 1985-1989 Corvette was a different story.
1984-1996 Corvette EGR Diagnosis. Exhaust Gas Recirculation (EGR) came about in 1975 when catalytic converters were introduced. The inert exhaust gas was used to quell the increased heat in the engine’s cylinders from the lean fuel mixtures required to keep the catalytic converters from melting down.
