Posted 03 April 2006 - 08:24 PM
How common are clogged cat converters. I had one clog on a MotorHome once and it was an interesting experience. I am concerned about mine.
Posted 04 April 2006 - 03:13 PM
It's important to fix any "miss" or SES condition quickly so as not to degrade the cat.
But if you've had misfiring, especially if it's been happening for a while, consider your catalytic converter's life to be diminished accordingly and your exhaust system back pressure to be higher also.
Higher back pressure lowers your engine's theoretical maximum efficiency (your mpg will suffer).
6.0L 4L80E Dark Grey Metallic, Toyo Open Country 285's, Pioneer DEH-9400MP, Infinity Basslink, Cobra 18WXST, Whelen Mini-Edge Strobe, WeatherGuard Cross Box
Posted 05 April 2006 - 06:31 AM
And only likely if one adds a lot of additives on a chronic basis that aren't cat friendly to the fuel. We also have a few 150,000+ mile vehicles with the original exhaust with cats. No problem at all with them.
2014 GMC 4WD SLT Crew Cab - Bronze
Posted 05 April 2006 - 06:37 AM
2006 SilverBirch Silverado CC Z71
Posted 05 April 2006 - 09:37 AM
Yelp, PCMs and converters covered 8 years 80,000
I had a 2003 5.3 Z71 Avalanche that had a clogged cat (passenger side) at 60,000 miles that was covered under warranty.
Posted 05 April 2006 - 04:07 PM
Then as some have experienced...not necessarily clogged, but classified as screwed when parking over tall dry grass...flame on!
Posted 06 April 2006 - 09:12 PM
2009 Suburban LTZ, 1970 C10 (Long term project), 1998 Silverado 2wd extended cab
Steve Ashworth Signature 383 Stroker, K&N FIPK II, True Dual Flowmasters, Thorley Tri-Y Headers, KYB Gas-A-Just shocks, Wait4me performance custom tune, MSD 6A Ignition, MSD Coil, MSD Superconductor Wires, SSBC Front 6 piston, rear 2 Piston Disc Brakes, Front and Rear Helwig Sway Bars. Eaton Posi, Complete MOOG Front End Rebuild
Wait4meperformance, Stainless Steel Brakes
Posted 07 April 2006 - 09:58 PM
Posted 31 July 2007 - 08:00 AM