EGR Vacuum Regulator Solenoid
WARNING: This page does not describe the selected car, but rather 30 other vehicles, including the 2004 Mercury Sable, 2004 Mercury Mountaineer, 2004 Mercury Monterey, 2004 Mercury Marauder, and 2004 Mercury Grand Marquis. However, it is still accessible from the selected car via links, so may be relevant.
The EGR vacuum regulator solenoid (EVR), (Fig 1) 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 EGR vacuum regulator solenoid allows some vacuum to pass, but not enough to open the EGR valve.
EGR VACUUM REGULATOR 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 | .75 | 2.53 |
| 33 | .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 | ||||||