LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Ford >> 1988 >> Tempo Base >> Repair and Diagnosis >> Engine Performance >> System >> EGR System >> Component Testing >> System Components >> EGR Solenoid Vacuum Valve Assembly
October 30: LEMON manuals on a temporary server, it is slow and having issues, download the manuals you need! Later in November we will switch back to the fast server.

EGR Solenoid Vacuum Valve Assembly

  1. The resistance of each solenoid should be 32-64 ohms. Replace any solenoid which is not in this resistance range. The vent valve should allow flow when the solenoid is de-energized.
  2. The control valve should allow flow when the solenoid is energized. The valves may have a very small leakage rate during testing.
Fig 1: Solenoid Flow Diagram
G55798

EGR Valve Position Sensor (EVP)

NOTE: For EVP sensor testing procedures, see appropriate article in the COMPUTERIZED ENGINE CONTROLS section.


With the solenoid disconnected, check the resistance between the solenoid terminals. Resistance should be 51-108 ohms. Replace solenoid if not to specification. Ports should allow flow of air when solenoid is energized. Operational signal for solenoid is supplied by the ECA.

scientia non olet · About LEMON Manuals