Catalytic smells on warm up
#1
Catalytic smells on warm up
I have a 95 4runner with a 3.4 in it. Tha cat smells on warm up, is it bad or one or both of the O2 sensors? If I relace the 02 sensor shopuld I do both? No one carries the rear sensor in stock so it seams like they are not offten replaced. Also, my cat does not rattle.
Thanks
Thanks
#3
I wouldn't base 02 sensor replacement on smell. There are too many variables. Plus, the rear 02 sensor rarely goes out; it's usually the pre-cat sensor that takes a dump.
BTW, what do you mean the cat smells? You mean the exhaust, right? Can you describe the smell? Is it a raw unburnt fuel smell, or a rotten egg smell?
Have you been tracking your mpg?
BTW, what do you mean the cat smells? You mean the exhaust, right? Can you describe the smell? Is it a raw unburnt fuel smell, or a rotten egg smell?
Have you been tracking your mpg?
#4
Registered User
Join Date: Nov 2002
Location: Far western Kentucky (transplanted from central PA)
Posts: 1,066
Likes: 0
Received 0 Likes
on
0 Posts
If you're not throwing a CEL, then I'd try changing your brand of gas first. I doubt it's the O2 sensors so I would guess it's either the gas or the converter (OR it's a normal odor that you've just noticed).
Last edited by Rick F.; 11-06-2006 at 03:50 AM.
Thread
Thread Starter
Forum
Replies
Last Post
Longbed 90
86-95 Trucks & 4Runners
27
10-19-2015 11:05 AM