Originally Posted by 1994se
That wasn't meant to be insulting, i'm just saying i forgot you're at a higher elevation at all. Like you said yourself, if you were running that 3.4 at a lower altitude you'd have even more problems.
I never said you were being insulting...If my reply came off that way I apologize.
I'm reseting the PCM overnight to see what happens, I reset it before I changed the fuel filter, but it was impossible to blow air thru, completely plugged. Did I mention how much I hate michigans transportation department? Its an 01 and the line is already rusted out bad. PB blaster over 10 times to get the bugger off. I just got done re-inspecting all the vaccum lines in the engine bay and they appear to be fine.
I'm thinking of these possiblitys:
Cat Converter is plugged slightly
, 00+ seem to have more problems with cats dying than 92-99s it seems.
Fuel Injector(*) Not working right
- Perhaps one of my fuel injectors is not working right, If one cylinder is lean it will cause KR across the board. However I'm not sure its worth the cost of flowmatching or just upgrade to 42.5LB injectors..hmm....
Fuel Pump Failing Under Load
While I cannot test the "under load" pressure of the fuel pump, my 93 had the similar issue with KR when the fuel pump had fine PSI at idle and reving it but under load it would crap out.
PCM is significantly different in the 00+
Versus the 97-99. Perhaps it has different torque managment specs that it feels it needs to pull back timing automatically to protect the transmission. Maybe the fuel tables and other information is different on the PCM, I cant get a straight answer from anyone.
Perhaps the 97-99 Exhaust is more free-flowing than the 00+, too much backpressure = less power. That would be hard to believe though.
It was 60* outside tonight. Same KR, 7* of timing in 2nd gear with a couple degrees of KR, it seemed like the "starting point" for the KR was around 9.5* meaning, that instead of 15 or so my maximum timing in 2nd was 9.5.