so i tried posting something on fb. no such luck, anyways ive deleted fb and have been looking all throughout here and gmt nation. none of my problems seem to match anyone elses exactly. Basically the engine cranks, it starts up, runs at 1k then after 6 seconds or so, it starts to bounce the rpms down half way to 500 and then slowly bounces all the way down and stops. This happens in about 10-12 seconds total. heres what ive checked so far;;;
crankshaft position sensor
swapped fuel pump
checked fuel pressure with key on 2 50, during the start up described it goes to around 60-63 until it shuts off, then slowly drops to 48-49 psi
checked every fuse and relay with tester light front and back under seat
checked every wiring harness with test light, found weaker signals (dimmer light) from throttle body harness.
checked wiring harnesses to all spark plugs.
used reader and have a p2432 code for the sai?
Any help would be great, i am out of ideas.