Originally Posted by Ted98
Just a few days ago I noticed a propane smell when I came to a stop. Its not all the time but I smell it about 2-3 times a day. At first I thought there was a diesel pickup near by running propane injection but it has become to frequent to be that.
I have been told it's my cat going bad but I always thought that a bad cat smelled worse then that and more like a sulfur/skunky smell.
Someone also mentioned to me today that it sounds like I could be running lean.
Without an AFR gauge on my truck or access to a decent scanner (all I have is for heavy trucks and a code scanner). I can't see in I am in fact running lean.
Any thoughts on what could be wrong?
Do you buy gas from a certain gas station? It is possible you are just pumping a bad batch! Other than that if you have a 1996 or newer there will be a post-cat oxygen sensor which should set off a emissions failure code, if you are getting this code than it is either the cat or the sensors.