2 questions

[Seberth]

p400s is EGR failure,
see my EGR MONO port cleaning?
this car has 2 tests for EGR, test A and B. both must pass and there is no fooling like 95 and older (egrt sensor fooling)
The one is cruise test and other the cut fuel coast to stop test, the scan tool shows which it is. if you look at vacuum and rpm in the expanded, mode, called freeze frame data.
this fact of the freeze frame tells use what mode fails.
the EGR is only active on this car, hot and must be moving.
making testing not easy at all.
my stall test. (if the works and i bet it wont) is always first.
my bark test.?
last is the life test, but is very tricky test. (takes 2 persons
clean the mono port yet,; never seen one not packed 100% ever. so.......

this is what I call a gen 3 system and 96 is that, in USA are you USA? canada my not be this. see? until 1998.
my page just for this car. is here,
http://www.fixkick.com/EGR-Gen3.html


is your Cat converter missing, if yes, EGR will never work again, impossible
due to MODulaotor goes off line for ever.

Thanks Helperbee, Just ordered intake gaskets and will remove intake to insp and clean.