Idle issue with my 1g.
 

Ok, so heres the deal, My 1g likes to idle rich, which would be fixable, but then all the sudden it will go way lean, then run that way until I rev it up then it will run rich again. The drop in voltage seems to be the trigger, but even after the voltage comes back up after it almost dies it will stay that way. I have enclosed a DSMlink log to show you what I'm talking about. I've ruled out vacuum leaks, I'm pretty certain this is an electrical issue of somesort but cannot figure out what, TPS voltage is right.

Car has DSM V3, twin 255lph pumps, 1600cc ford injectors, Aeromotive FPR, 3" GM maf with the cable to use link directly.

Any idea's welcome.

Re: Idle issue with my 1g.
 

if your pretty sure it electrical, make sure all the grounding straps are in place, and in good condition. also have your alternator and battery checked out

Re: Idle issue with my 1g.
 

ISC? FIAV? Elimanted, broken, or working?

Idle switch?

Re: Idle issue with my 1g.
 

alternator works, doesn't spike voltage or anything silly, battery is rock solid, the idle screw backed all the way out and shot it self out onto 694, which is fine cause I need it all the way out anywase, so I just plugged up the top. The idle motor works, I had an issue with the one on the car and it would just die then. Idle switch is emulated from the tps position in dsmlink.

Re: Idle issue with my 1g.
 

Fiav?

Re: Idle issue with my 1g.
 

What spark plugs are you running?

Re: Idle issue with my 1g.
 

NGK BPR8ES. It did the same thing with the 7's though

Re: Idle issue with my 1g.
 

Can't be anything changing in there, I JB welded the whole setup under the throttle body shut and took off the coolant lines. I would not be surprised if it didn't want to idle high enough warming up, but its fine warming up, its once its warm it has issues.