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Originally Posted by Fasterthanyou
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Originally Posted by PDubs87Z28
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Originally Posted by Fasterthanyou
It's running rich. Replace the o2 sensor, it happens often and I just ran into the same problem (smell mostly) with my car before it got taken down last year. It was the o2 sensor going bad and the result was slightly rich. That made the cat stink and my HC was close to the inspection limit.
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also....last sunday i filled my car with shell 93 and drove around 130 miles on the highway just that day, it was a little above 3/4 tank. Then the past 3 days i noticed this and i have put 120 city miles since monday before filling up again today.
So say if i replace the O2 do u think i still need to replace the cat? Its two weeks old and i hear the heat shield rattle alittle. Let me know thanks |
The heat shield might not be rattling on the cat. With a 3rd gen the shield could be what's on the floor pan or the 2 touching. I've had to fight HARD with all of the cat's to get the heat shields off so I doubt the cat is 'bad'.
A new o2 sensor never hurt anybody and with todays gas prices it's hardly an expense. $20 for the sensor is like 3/4 of a tank of gas. You'll save that much in a few months just in gas savings. That is of course if the o2 is bad or going bad.
A new cat smells like rotten eggs when it's running slightly rich. Last question, is it a 3 way converter with an air pipe and do you have the air pipe hooked up and working? That makes a difference in the cat's efficiency. |
1)Air pump siezed(been like that since i bought it 2 years ago) so no air hose hooked up(capped off from hose out of cat)
2)Got an O2 already was going to do with a tune up but i'll put it in tomorrow, Tune up has to wait. Got 8mm accel plugs/wires on(bought it like that)
3) If you want me to get a new air pump(won't bother me to do).....where the hell do i get one/and how much?
4) Numbers of emissions of the top of my head:
NOX read an 18 out of 1187 standard
HC read a 17 out of 800something standard
other ones i can't remember bc i don't have the sheet with me.
let me know what you think.