Failed CA smog test, NO(PPM) levels were at 512 (MAX) 88 (AVE) and 747 (MEAS) which is what caused it to fail. Is this related to the EGR system? How much can I expect repairs to cost if it is the EGR system? Car runs very well, no knocking, no pinging, no hesitation...no reason to think there is a problem other than the failed smog test! Many thanks for your help! J
Cost to replace EGR system on 1997 Toyota 4Runner
by jjjjagggg in Sierra Madre, CA on March 30, 2011
1 answer 1 comment
ANSWER by Superbob on April 06, 2011
I would guess it's an EGR problem but no way for me to know what it'll cost without knowing what's wrong. If you want to find a specialist, here's a directory link for you: https://repairpal.com/directory?address=91024&car_brand_names=Toyota
COMMENT by Visitor on April 08, 2011
Thank you for the response--it turned out to be a faulty Oxygen sensor which wrecked the cat., so I had to replace both those things--and then it passed.
The EGR System tends to get restricted or blocked with carbon after 100,000- 125,000 miles which will cause an emissions test failure for NOX. If the EGR system is equipped with an EGR temperat...
I was told that efi service was recommended. Also what mm should brakes be replaced?