My exhaust smells gassy

kpinthebay

Member
Anyone else had this issue and was it fixed with a new O2 sensor? My 02 with 130k still has the original O2, so im thinking it might be it. No CEL though. Or maybe its the cat?
 
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Thanks for starting this.

Mine does and I've got new O2 sensors. It's really bad when first started. I'll usually start it and quickly back out of the garage. Not so bad once it warms up.

I also have a low rough idle when in gear issue as well. Don't know if these are related though. I'm going to address these issues when I do the timing belt this fall.
 
both my 2000 and '97 and my buddy's '02 all smell really toxic on start up, I thought it was just a 4runner thing!
 

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