Car idles rough. Fuel filter? Alternator? Evap?

[Majikterror]

Well my car idles low after it warms up between 680-750. I have no boost leaks, I have new wires and plugs (Accel and BPR7ES). My car is also noticebly leaning out at high RPMs. Could this be a alternator problem, bad fuel filter? Also I just had my EVAP Solenoid DTC come on today with my usual Fuel Pressure Solenoid DTC. I confirmed the Fuel Pressure Solenoid is bad via Ohm resistance. Anyone else had this problem before?? Any thoughts on the EVAP solenoid code?

Thanks in advance.

 

[1995gsx20g]

that isn't low as per the emissions sticker under your hood that says 750rpm give or take 100.

 

[Majikterror]

that isn't low as per the emissions sticker under your hood that says 750rpm give or take 100.

But my car almost dies when it is idling low, lights flicker, oil light flickers you know the routine. Is this normal? Because my car has never been the same since I did the Honeycomb removal, then switched to to MAFT with GM MAF.

 

[1995gsx20g]

750 is the proper speed but. if you messed with the honeycomb it will reduce the amount of air that the ecu sees and will be more of a problem at low rpm due to the overall amount of air going threw your engine at idle is low. i would say that its running to lean to be stable at that rpm. nothing against you or your set-up but i personally hate gm maft. its just not enough to trick the ecu imho. this isnt a fix but you could turn your idle up via biss in the mean time until you get it better situated.

 

[Majikterror]

750 is the proper speed but. if you messed with the honeycomb it will reduce the amount of air that the ecu sees and will be more of a problem at low rpm due to the overall amount of air going threw your engine at idle is low. i would say that its running to lean to be stable at that rpm. nothing against you or your set-up but i personally hate gm maft. its just not enough to trick the ecu imho. this isnt a fix but you could turn your idle up via biss in the mean time until you get it better situated.

Any tricks to adjusting the BISS without a scantool? Anything in pocketlogger I can use or just play it by ear?

 

[YENKO]

You dont need a scan tool when you adjust biss just watch the tach while you turn the biss until you reach desired rpm´s