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On the 1998-2002 Mazda 626 v6 the Egr valve is located on the back right side toward the bottom of the engine. It is located in a very hard area to get to between the engine and the firewall. If you take out the intake system and the throttle control you can see it more clearly. there are two coolant lines connected to it. There are some picture of it at

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βˆ™ 2011-09-13 10:41:09
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Q: Where is the EGR valve on a 1999 Mazda 626?
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