05-07-2013, 11:17 PM
7xx is transmission, tcc is torque converter clutch lockup failure. 400s is egr fail, (or just the test parts failing, not EGR actual)
many folks ignore 400s, in non smog test regions. but if car runs bad, and wont idle right , (too low idle, or stalls) then it must be fixed.
if in a smog test region, the 400s means (most times) you will fail for too high NOX, a nasty gas that makes acid rain. etc.... nitros oxides.
if he desires to make 400 work good. do the stall test first.
96+ is here
http://www.fixkick.com/EGR-Gen3.html
many folks ignore 400s, in non smog test regions. but if car runs bad, and wont idle right , (too low idle, or stalls) then it must be fixed.
if in a smog test region, the 400s means (most times) you will fail for too high NOX, a nasty gas that makes acid rain. etc.... nitros oxides.
if he desires to make 400 work good. do the stall test first.
96+ is here
http://www.fixkick.com/EGR-Gen3.html
http://www.fixkick.com