gmrulz4u Posted September 13, 2007 Report Share Posted September 13, 2007 I was testing my EGR Valve the other night and all was looking good until I read in my 89 Cutlass Factory Service Manual that the EGR Valve should only hold between 3-7" hg of vacuum and mine was hold around 10" hg or more steady... What is the big deal with how much it holds? Does it mean it might not leak down fast enough or something when the EGR is commanded OFF? THANKS! Quote Link to comment Share on other sites More sharing options...
Andrew Posted September 13, 2007 Report Share Posted September 13, 2007 i would think that its recirculating too much exhaust gas in that situation. Quote Link to comment Share on other sites More sharing options...
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