Which port on the EVR solenoid goes to the EGR valve?

The side hose nipple labeled 'To EGR' connects to the EGR valve; the lower nipple labeled 'Vac Source' receives the vacuum supply.

What is the electrical pinout of the EVR solenoid connector?

The two-terminal connector is labeled 'Pin 33' and '12v', one terminal is 12-volt power and the other goes to pin 33.

Where does the EVR solenoid get its vacuum?

From the port labeled 'Vac Source' on the bottom of the valve.

Does this diagram show mounting details?

It depicts a mounting bracket with a bolt hole on the solenoid body, but gives no torque values or hardware specifications.

Home/ Registry/ Ford/ Bronco/ 1987-1991/ “Eddie Bauer”/ Photo supermotors.net/registry/media/955948

Ford EVR Solenoid Diagram - Pin 33/12v Wiring & EGR Vacuum Hose Routing

EGR vacuum regulator solenoid drawing labeling vacuum source and EGR ports plus 12v pin 33

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EGR vacuum regulator solenoid illustration labeling the vacuum source and to-EGR vacuum ports along with the 12v Pin 33 electrical connection.

Part of 1987-1991 Ford Bronco Vacuum Routing Diagrams

AI caption November 2012 · Photo 1458 of 1787

This document is a labeled line drawing of an EGR Vacuum Regulator (EVR) solenoid, uploaded as part of an emissions/vacuum-routing reference set for a 1990 Ford Bronco. The illustration shows the cylindrical solenoid body with a mounting bracket, a two-terminal electrical connector, and two hose nipples. Callouts identify the electrical connector terminals as 'Pin 33' and '12v', indicating one terminal receives switched 12-volt power while the other connects to pin 33 (a computer/ECU control pin). The lower hose ports are labeled 'To EGR' (the output port that supplies regulated vacuum to the EGR valve) and 'Vac Source' (the input port that receives manifold vacuum). A reader can learn the correct hose routing for the EVR solenoid, which nipple takes source vacuum and which feeds the EGR valve, as well as the electrical connector pinout for testing or wiring diagnosis. The drawing contains no part numbers, torque values, year/model statements, or additional text beyond the four callouts, so applicability to a specific vehicle comes from the uploader's album context rather than the document itself.

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Frequently asked questions

Which port on the EVR solenoid goes to the EGR valve?: The side hose nipple labeled 'To EGR' connects to the EGR valve; the lower nipple labeled 'Vac Source' receives the vacuum supply.
What is the electrical pinout of the EVR solenoid connector?: The two-terminal connector is labeled 'Pin 33' and '12v', one terminal is 12-volt power and the other goes to pin 33.
Where does the EVR solenoid get its vacuum?: From the port labeled 'Vac Source' on the bottom of the valve.
Does this diagram show mounting details?: It depicts a mounting bracket with a bolt hole on the solenoid body, but gives no torque values or hardware specifications.