burekv Posted February 4, 2004 Report Share Posted February 4, 2004 I cleaned my egr valve a couple months ago, but i am getting the code p0404 again, so i don't think i cleaned it well enough. From other posts i read it stated not to get the carb cleaner on the coil. So how careful do you have to be when spraying the carb cleaner. Also how do you know if you need to replace the EGR valve instead of just cleaning it. Any help that you can give me would be greatly appreciated. Have a great day and enjoy your caddy. Link to comment Share on other sites More sharing options...
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