why do my catalytic converter gets cherry red hot

1996 MERCURY MARQUIS
112,000 MILES
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YONKERSNY10701
  • MEMBER
  • 1 POST
changed the intake manifold
Apr 5, 2012 at 7:00 PM
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ASEMASTER6371
  • ✓Experienced Mechanic
  • 52,796 POSTS
either late timing or you have a missfire that is pouring fuel into the cat.

Roy
Apr 5, 2012 at 7:02 PM
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DJCL
  • ✓Experienced Mechanic
  • 767 POSTS
To much fuel getting dumped in to the cat is a shore way to wipe out the cat. You must find the reason fore the rich running problem or you will need a cat . There not cheap.
Apr 5, 2012 at 7:35 PM
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