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The exhaust gas recirculation (EGR) system is used to lower combustion temperatures and reduce oxides of nitrogen (NOx) emissions. This is accomplished by directing exhaust gases into the engine combustion chamber to cool the combustion burn.
Some EGR systems use a pressure feedback sensor in the exhaust stream that tells the powertrain control module (PCM) how much exhaust gas is actually flowing. The PCM then uses this information to adjust the EGR vacuum regulator for optimum EGR flow.
The typical symptoms of a failed EGR pressure feedback sensor include stalling, surging, rough idle, increased emissions, and an illuminated check engine light.
Part 1 of 3: Locate the pressure feedback sensor
In order to safely and efficiently replace your EGR pressure feedback sensor you need a couple of basic tools:
Step 1: Locate the EGR pressure feedback sensor. The EGR pressure feedback sensor is generally found mounted somewhere on the engine or to the firewall.
Part 2 of 3: Remove the EGR control valve
Step 1: Disconnect the negative battery cable. Disconnect the negative battery cable and set it aside.
Step 2: Disconnect the vacuum hoses. Disconnect the vacuum hoses by carefully sliding them off the connections.
Step 3: Remove the electrical connector. Remove the electrical connector by pushing down on the tab and sliding it off.
Step 4: Remove the retaining fastener. Remove the sensor retaining fasteners using a ratchet or wrench.
Step 5: Remove the sensor. Remove the old EGR pressure feedback sensor and keep it aside.
Part 3 of 3: Install the new EGR pressure feedback sensor
Step 1: Mount the new sensor. Mount the new EGR pressure feedback sensor in position.
Step 2: Install the fasteners. Reinstall the fasteners and tighten them until they are snug.
Step 3: Reinstall the electrical connector. Put the electrical connector back on.
Step 4: Reinstall the vacuum hoses. Put back the vacuum hoses that you had removed earlier.
Step 5: Reconnect the negative battery cable. Reconnect the negative battery cable and tighten it down.
You should now have a new EGR pressure feedback sensor installed. If this is something that you prefer to leave to the professionals, contact the team at YourMechanic and avail their expert EGR pressure feedback sensor replacement.
Schedule EGR Pressure Feedback Sensor Replacement
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