Target idle.

[PJG1173]

your other alternative would be to lower the fuel pressure .5 - 1 psi at a time until it leans out enough. when my setup was stock I switched to an AFPR I adjusted for 13 psi and I was globally rich on a stock tune. I had to back down to 11.5 psi to get blms to fall back in line.

[jameslleary]

Ok, so I have my idle BLM at 125 now. ended up cleaning the injectors with a home made tbi injector cleaning machine that I built with an extra injector pod, and an old inline tpi pump I had laying around...ran straight SeaFoam through them. Also, got another Throttle body base from Dave, which had the idle screw plug from the factory....cleaned her up and stuck the injctors on...all seems ok for now, still need more time for the computer to relearn, but very happy so far!
Thanks for your help guys!

[PJG1173]

do you have pics of this home made injector cleaner?

[jameslleary]

I can get some when I get back to da house.All I did was zip tie the injector pod to a piece of wood mounted to the side of a white laundy detergent bucket, fed the pump through a barbed fitting in the bottom of the bucket with a filter inline, and just left the bypass side with a rubber hose dumping into the bucket. used aligator clips on the injectors and used a battery to open them. Really a budget setup, but it worked.
Same thing as using one of the air tank based kits, but you are spraying into the bucket, instead of running the engine on the cleaner....just makes it a little easier to watch the spray pattern.

[jameslleary]

ok, I am still fighting with this, despit a fullm ac delco tune up, including ALL sensors.
The only things not replaced, are the injectors, but they spray a nice cone since the cleaning
New Catylist,so plugged exhaust is out of the question.
Fuel pressure is in spec. Timing is 0*
Grounds couldnt be better.

I have done the Min air adjustment over 50 times. After the idle is set, I fire it back up, and it seems ok while sitting in the drive way.
Move it from the driveway and take it for a spin, and bwammo, the surge is back. Blm still low, except after each time i do the minimum air proceedurs,regardless of what calibration I run. I thought I had the problem solved with the new chip program.
http://i144.photobucket.com/albums/r...y/6c1d30ab.mp4

[jim_in_dorris]

Two things James: what is the sound in the video that sounds like a card on bicycle spokes, and have you tried lowering your fuel pressure?

[EagleMark]

Yeah what's that noise?

The surging sounds so much like a vacuum leak, BLM low sounds like vacuum leak, driving good except idle sounds like vacuum leak, have you checked for vacuum leaks?