How to troubleshoot the EGR valve control solenoid?

1987 GMC JIMMY
90,000 MILES • 2.8L • 6 CYL • 4WD • AUTOMATIC
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ACTIVEAL
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How to troubleshoot.
Jan 11, 2025 at 3:21 AM
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STRAILER
  • ✓ASE Certified Mechanic
  • 54,837 POSTS
  • ASE Certified Mechanic
That is a linear valve so it might be difficult to test but you can try a continuity test between the two coil windings.

Here is a guide and the EGR control valve wiring diagrams:

https://www.2carpros.com/articles/how-to-use-a-voltmeter

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Jan 11, 2025 at 9:20 AM
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