1990 Cadillac Deville catalytic converter

Tiny
HERMAN DAVIS
  • MEMBER
  • 1990 CADILLAC DEVILLE
  • V8
  • FWD
  • AUTOMATIC
  • 140,000 MILES
Im tryen to find out why my catalytic converter gets hot to the point it glows red, I have had it replaced twice and it still gets hot. I have changed the muffler, o2 censor and the ecm. The car also isn't given good gas mileage and does not have much power. Please help me.
Thursday, May 22nd, 2008 AT 5:42 PM

1 Reply

Tiny
BUZZSAW
  • MECHANIC
  • 1,198 POSTS
Sounds like the exhaust is too rich

pull your codes off and warmer on your heater controls at the same time, with your key in the on position, look for codes in the millage center, starts out 8.8.8 and ends with 0.7.0
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Saturday, May 24th, 2008 AT 3:01 PM

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