EGR Vacuum Regulator (EVR) Solenoid
WARNING: This page does not describe the selected car, but rather 32 other vehicles, including the 2005 Mercury Sable, 2005 Mercury Mountaineer, 2005 Mercury Monterey, 2005 Mercury Montego, and 2005 Mercury Mariner. However, it is still accessible from the selected car via links, so may be relevant.
The EVR solenoid is an electromagnetic device which is used to regulate the vacuum supply to the EGR valve. The solenoid contains a coil which magnetically controls the position of a disc to regulate the vacuum. As the duty cycle to the coil increases, the vacuum signal passed through the solenoid to the EGR valve also increases. Vacuum not directed to the EGR valve is vented through the solenoid vent to atmosphere. Note that at 0% duty cycle (no electrical signal applied), the EVR solenoid allows some vacuum to pass, but not enough to open the EGR valve.
EGR VACUUM REGULATOR (EVR) SOLENOID DATA
| Duty Cycle (%) | Vacuum Output | |||||
|---|---|---|---|---|---|---|
| Minimum | Nominal | Maximum | ||||
| In-Hg | kPa | In-Hg | kPa | In-Hg | kPa | |
| 0 | 0 | 0 | 0.38 | 1.28 | 0.75 | 2.53 |
| 33 | 0.55 | 1.86 | 1.3 | 4.39 | 2.05 | 6.9 |
| 90 | 5.69 | 19.2 | 6.32 | 21.3 | 6.95 | 23.47 |
| EVR resistance: 26-40 Ohms | ||||||