v70 tranny install update!!!

[v70guy]

well, after searching for a few weeks a 50-52sn trans was located and finally installed- in the dirt, under a tree with basic hand tools- *briefly: there is no axle nut on this year model v70-2000 FWD- its a 13-15mm bolt that threads into the axleshaft in the middle of the wheel hub
anyways, after the trans was installed and the car finally driven, CEL made itself known
codes 225-t/p or pedal switch
305- cylinder 5 misfire
350 and 355 secondary ignition something or other
ETC light on the dash .
first drive showed the 2-3 flair up, but after the trip home the problem stopped- used the toyota t-iv fluid
ran suprizingly well for a car that sat for nearly 3yrs anyhow, the misfire, etc wasnt apparent on that first drive-meaning i saw the CEL but the car still ran damn good- but once it was shut down and restarted, thats when the misfire and sputtering got pretty bad. CEL started to blink randomly and the car then ran like crap
what's it mean when CEL flashes
as far as the codes are concerned, i'm pretty sure the 350/355 codes might be there because rats got in the wiring( rat poo EVERYWHERE!!!)-which caused the misfire code. the pedal/TP code is beyond me,though any ideas as to what could cause the secondary ignition codes to pop up? ALSO the ETC light comes on sometimes but the trans comp mode in my scanner says no codes are present in that modual
wish I knew how to post pics, but, well, there it is...
can i get some opinions?
THANXX