the gold2 Posted November 22, 2010 Report Share Posted November 22, 2010 Hello, a quick question. The 92 Eldorado has two EGR stack pipes inside the throttle body. One toward the back is rigid and does not move when handled. The one toward the front of the car does rotate when handled and sits non-fixated(handled via the opened throttle plates). That one seems to have a 'collar' at it's base. Normal? I'm curoius now because recently I cleaned the area and just took this observation for granted. Thank you !! Link to comment Share on other sites More sharing options...
BodybyFisher Posted November 22, 2010 Report Share Posted November 22, 2010 That is normal, they move, must rod them out and make sure they are clear. If you have your EGR off, those 2 pipes lead to the EGR, you can use compressed air, wire brushes and carb cleaner to clean them out good. Pre-1995 - DTC codes OBD1 >> 1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/ Cadillac History & Specifications Year by Year http://www.motorera.com/cadillac/index.htm Link to comment Share on other sites More sharing options...
the gold2 Posted November 22, 2010 Author Report Share Posted November 22, 2010 Thanks BodybyFisher, its good to be sure. My next step is to remove the EGR and clean that and the manifold and expel the debri with air. Have a good Thanksgiving ! Link to comment Share on other sites More sharing options...
BodybyFisher Posted November 22, 2010 Report Share Posted November 22, 2010 Thanks BodybyFisher, its good to be sure. My next step is to remove the EGR and clean that and the manifold and expel the debri with air. Have a good Thanksgiving ! You have a good TG also! It is not necessary to pull the EGR to clean those tubes, but you can get deeper if you do, put a rag over the outlet when you blow it with compressed air Simply rodding them out cleans those tubes fine, we have that from a Northstar engineer But if you are pulling the EGR anyway to clean it, deep cleaning it is great Make sure you have a new EGR gasket Pre-1995 - DTC codes OBD1 >> 1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/ Cadillac History & Specifications Year by Year http://www.motorera.com/cadillac/index.htm Link to comment Share on other sites More sharing options...
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