Idle Problems(TFS Stage 1)

[88-GT]

Well low and behold I finally finish the new motor and I cant get it to idle, but not in the general sence that others have expierienced. I have the base timing set at 16 degrees, and seems to be where the car likes it the most. If I try setting the base idle with the IAC disconnected it idles fine, I can rev it it comes back down, everything seems fine, I try to drive it and if I stall it all goes to ****. When I try to start it, it will start right away then on the downstroke die, everytime it surges I have to stab the gas to keep it running.

It seems like unless the idle is brought down gently via the throttle plate adjusting screw, it wont idle. Even beyond stalling, even off on with the key brings similar results.

Any thoughts? My next step is going to be to try a new IAC, and hope for the best. Then maybe to an IAC adjuster, either way, this sucks.

Mill:
TFS top end kit
Probe 9.3:1 srs pistons
BBK 70mm TB and EGR(loud as hell)
C&L 73mm


Thanks in advance.

 

[BK_CAULEY]

zero the throttle screw out and install a new i.a.c if it still does turn the screw until you get it just right.

or you can cut a small piece out of the iac gasket in the middle to let air in. not much just a little. and if need be trim more.

these are methods i have used, so they are not hard core tested just some i have found to work fo rme. not neccisarilly the correct fix.

 

[88mouse]

I took the IAC off and put a block off plate where it goes and turned the throttle screw in to set the idle.

Not the right way but it works just fine.

 

[stang_hp]

I had the same problem, turned out that I had to run a ground wire from the fire wall to the tps.

 

[BlownFiveLiter]

Surging Idle Checklist

Click that link and follow the steps in it. You should be able to keep that thing idling with the TFS cam. My 95 doesn't surge with it, and it's much less mod friendly than the A9* series EEC in the Fox.