Question about 1991 Cadillac DeVille
It could be from unburnt fuel. Try a new catalytic converter. Have the muffler shop install a Universal type converter not an OEM. Universal type is much cheaper. Be sure to keep your old converter. You can recycle it for enough money to pay for the new converter installation. Don't let the muffler shop have it. They recycle those things for big bucks. If they want it ,sellit to them. I had a universal converter put on my Buick Park Avenue for $150.00, including labor. Recycled the old converter for $197.00 the same day. The old original equipment converters are worth a lot more than the newer ones because of the platinum pellets inside.
Posted on Jan 22, 2011
Tips for a great answer:
Mar 16, 2015 | 1999 Chevrolet Suburban
Jul 22, 2014 | 1995 Chevrolet Tahoe
Apr 02, 2014 | 1992 Mitsubishi 3000GT
Aug 19, 2017 | 1994 Honda Accord
Mar 12, 2013 | 1995 Geo Prizm
Oct 17, 2017 | 1993 Ford Taurus
Nov 30, 2010 | Toyota Paseo Cars & Trucks
Jul 16, 2008 | 1990 Ford F250
134 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: