*Blows dust off*
I got frustrated with it and gave up on it for a while. I cleaned up every connector I could find on there and triple checked all the wires. I even connected my scangauge to it and everything looked normal as far as air fuel ratio and the sort. I also learned that the check engine light must be burned out because it is throwing a code after all. It says bank 1 oxygen sensor no activity, which I find really odd since the sensor is new and has a new connector as well. I even searched a few junkyards for another 96 X motor car for a PCM, just to see if that could be the culprit.

I didn't find one but on a more positive note I found a HUD for it and put that in there.

_________________

-Ryan
2004 GTO....LS1, LSA supercharged 525whp, 6MT
96 SSEi...September 2010 COTM........GONE
04 GTP comp G.... December 2015 COTM........GONE
2013 Audi Allroad Quattro

This is one of the whole issues with this motor, it's PCM, and harness. The extreme finickiness (if that's a word). My '96 Monte with it, if a blade of grass in China waved in the wind, it'd set a CEL here in Chicago. It ewas just that tempermental/finicky.

On a side note, I don't recall if I posted it already in this thread (and I'm too lazy to go look), have you ensured that the upper intake plenum IS properly torqued/sealed to the base? Typically you'd think that any post-MAF air intrusion would lead to a lean code, but an ever so slight leak at that joint could be causing the surging. Those threads in the base are VERY senstitive to re-torquing.

_________________


Retired Bonneville Owner and former GM Tech:
2004 Pontiac Bonneville GXP: Black/Ebony *SOLD*

Summer Toys: Combined 827 RWHP / 877lb/ft RWTQ
2004 Pontiac GTO: Impulse Blue Metallic/Black/M6: lots 'o mods, 415 RWHP / 405lb/ft RWTQ!
2006 Cadillac STS-V: Light Platinum Metallic/Light Gray/A6 - Spectre CAI, Magnaflow exhaust, Speed Inc. tune, 412 RWHP / 472lb/ft RWTQ

Daily Drivers:
2019 Chrysler Pacifica Limited: Mommy's new RGC
2015 Chrysler Town & Country Limited Platinum: Kids new RGC
2007 Chrysler Town & Country Limited: Sold to neighbor
2009 Pontiac G8 GT: L76, Sport Red Metallic
2003 Chevrolet Suburban 2500: Doeskin Tan - 8.1L Big Block... new plow truck
1999 Chevrolet Suburban: Sunset Gold Metallic - Daddy's winter beater and plow truck

Ok so I was starting to lose my sanity with this thing. I ordered a Denso O2 sensor from rock auto and I had the place we got the car from install it. I just drove it 20 miles and no stalls, no surging, no codes and it even sounds quieter. So that means the sensor I had the first time must have been a dud.

_________________

-Ryan
2004 GTO....LS1, LSA supercharged 525whp, 6MT
96 SSEi...September 2010 COTM........GONE
04 GTP comp G.... December 2015 COTM........GONE
2013 Audi Allroad Quattro

Doh! Can't believe I didn't see this.

Yes, X motor PCM's can be very finicky regarding HO2S's.

_________________


Retired Bonneville Owner and former GM Tech:
2004 Pontiac Bonneville GXP: Black/Ebony *SOLD*

Summer Toys: Combined 827 RWHP / 877lb/ft RWTQ
2004 Pontiac GTO: Impulse Blue Metallic/Black/M6: lots 'o mods, 415 RWHP / 405lb/ft RWTQ!
2006 Cadillac STS-V: Light Platinum Metallic/Light Gray/A6 - Spectre CAI, Magnaflow exhaust, Speed Inc. tune, 412 RWHP / 472lb/ft RWTQ

Daily Drivers:
2019 Chrysler Pacifica Limited: Mommy's new RGC
2015 Chrysler Town & Country Limited Platinum: Kids new RGC
2007 Chrysler Town & Country Limited: Sold to neighbor
2009 Pontiac G8 GT: L76, Sport Red Metallic
2003 Chevrolet Suburban 2500: Doeskin Tan - 8.1L Big Block... new plow truck
1999 Chevrolet Suburban: Sunset Gold Metallic - Daddy's winter beater and plow truck