N56629
07-19-2005, 01:14 PM
You say you just installed a V8 TB on your V6 and now you get a code 1494? Most likely you bought an older TB that was designed for early Magnum engines with an EGR system. The first two pictures should help you identify the EGR type TB. Avoid them if you can, but if the price is right don't worry, there is an easy fix.
Note the tiny holes just above the throttle plates. This identifies the EGR type without even removing it.
http://img.photobucket.com/albums/v311/N56629/Throttle%20Bodies/Picture27.jpg
Unlike the non-EGR type there is no passage for the higher vacuum source required by all post-EGR engines.
http://img.photobucket.com/albums/v311/N56629/Throttle%20Bodies/UnmodifiedEGRTG.jpg
Again, the solution is very simple. Take a dremel type tool and make two slots approximately 3/16 inch wide and about 1/8 inch deep or to the depth of the pocket. The exact location, size and shape is not at all important.
http://img.photobucket.com/albums/v311/N56629/Throttle%20Bodies/ModifiedEGRTB.jpg
Note the tiny holes just above the throttle plates. This identifies the EGR type without even removing it.
http://img.photobucket.com/albums/v311/N56629/Throttle%20Bodies/Picture27.jpg
Unlike the non-EGR type there is no passage for the higher vacuum source required by all post-EGR engines.
http://img.photobucket.com/albums/v311/N56629/Throttle%20Bodies/UnmodifiedEGRTG.jpg
Again, the solution is very simple. Take a dremel type tool and make two slots approximately 3/16 inch wide and about 1/8 inch deep or to the depth of the pocket. The exact location, size and shape is not at all important.
http://img.photobucket.com/albums/v311/N56629/Throttle%20Bodies/ModifiedEGRTB.jpg