sabot Posted March 21, 2004 Posted March 21, 2004 I failed emissions on NOx and I was wondering if my 1993 lexus sc 400 has a egr valve? I cant find it. could any one help me on this..... Chick
SKperformance Posted March 22, 2004 Posted March 22, 2004 You do have an egr ,where i am not sure. it should be beside the throttle body 2 round little cans one is attached with a rusty looking metal pipe.
UCF3 Posted March 22, 2004 Posted March 22, 2004 Is your checkengine light on, before you went for emissions testing? The EGR is on the Left side of the block, next to the LExus Symbol.
sightdev Posted March 22, 2004 Posted March 22, 2004 Sabot; colder engine will produce more emission, with that note did you have engine running and fully warmed before entering the bay? I had some stations tell me to turn off the engine but I knew that would cause excessive emission before the test. If you have fully warmed the engine before testing, you may want to checkout the oxygen sensor first for malfunction.
Sadistic Posted March 22, 2004 Posted March 22, 2004 If an o2 sensor malfunctions, you would think it would throw a hard code. Most every emissions part will throw some sort of hard code that won't go away. In case you can't find it, here's a diagram.. EGR valve is E2
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