Need some help

[imjoesnuffy]

All kinds of issues with my GN.

Running like crap first of all. Still have an occasional backfire/sputter after swapping injectors. Very recent plugs and wires. Just pulled them, they look fine, not fouled. Checked the coil as well resistance is between 12 and 13 between each.Did the spring cleaning things, engine cleanerchanged all vacuum lines I could find.

About to just throw my hands up and take it to a mechanic that knows what they are doing. Man this car is frustrating. Installled a Knock and Boost gauge today as well. Cant get above 6 lbs of boost before Im in the yellow, have to get out of it quick or it goes to the red.

It does leak oil, Im wondering if the leak from the intake can be causing the problem? Thinking about pulling the intake and replacing the valve springs while I am at it. What recommendation for spring? Gasket or just sealant for the intake?

FP is 42 line on/38 off
BLM 128
INT 150
IAC 38
TPS .46 at idle and engine off
02 volts are. 93 at WOT
MAF is 5 at idle

Maybe Im not understanding something, any help you can offer would be appreciated. Thanks

 

[Pronto]

Are those #s with a Scanmaster? O2s should be in the around 800 if it really is at 93 then you areway lean. Have you replaced the O2 with a fresh GM one?

 

[imjoesnuffy]

#

Taken by OTC 4000E

 

[imjoesnuffy]

?

Because my values are all over the place. Was thinking possibly a bad ECM?

INT while driving fluctuates, BLM fluctuates as well. Not getting any codes.

Lean at idle .00 - .10, rich at WOT at .90 - .95????

Any way to test the ECM?

 

[imjoesnuffy]

the saga continues

This post is going on in Hot Air as well.