answersLogoWhite
Auto Parts and Repairs
EGR Systems
Ford Expedition XLT
Ford F-150

Whats the easiest way to test and repair the EGR valve and solenoid on a 1989 Chevy truck 305?


Top Answer
User Avatar
Wiki User
2004-11-14 16:41:19
2004-11-14 16:41:19

The EGR valves don't fail like they used to, due to better materials- silicon rubber diaphrams which can withstand the heat from the engine. What you probably have is a clogged port inside the manifold underneath the valve. To test the valve, you would hook up a hand vacuum pump, start the engine, apply vaccum, and if the engine stumbles, and almost dies, then the valve is working. If there is a problem with the solenoid, it would trigger a code in the pcm, and in effect illuminating your check engine light.


Copyright © 2020 Multiply Media, LLC. All Rights Reserved. The material on this site can not be reproduced, distributed, transmitted, cached or otherwise used, except with prior written permission of Multiply.