its showing open 3%?

 

That throttle cracker table "sees" TPS and MPH. So you can
"fade" the airflow adder such that it adds less and less, as
you go slower / lower. It's only meant to make for a "soft
landing" and probably ought to have hit zero added air by
the time you cross the threshold MPH value in that little
box pair. However it's better to have an elevated idle than
a rolling engine stall behavior, if you have to choose.

I believe the main problem is the discontinuous, spike/hole
nature of the stock table; traversing these potholes has to
whack the IAC and its control loop around big time and it's
not that stable or responsive, to deal with it well (especially
when it's got other "challenges".

 

Dang Jimmy, I looked at that table a while back after hearing how much it helps cammed / stalled cars idle, but it didn't make sense to me. I see now I should have tweaked it to make sense. You're good....

 

my was was weird, with values in the throttle cracker table my car dipped comming to a stop, values at 0 its fine, idle comes down smooth as well and holds the idle well

 

No, but it was before I reset it.

I copied your cracker table and it seems to have helped quite a bit.

Josh

 

ook, yeah i had a similar issue with mine, cool man im glad that worked out for you. i have actually been getting tons of messages about it saying its helped out, if i knew it would help that many people i would have posted a while ago, i just thought i had some weird issue lol

 

Hey fellas...
I have a 2000 Camaro with a big cam/stall and it idles at idle ok, but on deceleration it does the "hang at 1600 rpm" ting and then when at 99% stop, it surges back to idle at a dead stop. Also, the car likes to "drive itself" at abot 45 mph with my foot off the gas. My tuner used LS1EdiT for the tune...

Can any of you offer a file/table that I can show him to help him get my car to run right???

2000 Camaro, A4, .611/.619 242/250 114 cam, 4000 stall, etc.

 

that table that i have posted, if not just have him drop the values in the 1600-2000 range from 3.0 to about 1.5

 

Does the cracker work off the IAC motor or the crusie control or what?

 

Iac...

 

This is exactly the thread I was looking for. I have the same problem with the car driving itself and the idle hanging at 2200 RPM when stopped. I have a FAST/NW 90mm with ported 243's and a 240 .595 114LSA cam will WS6FirebirdTA00's cracker tables help me out any? And if it doesnt is it easy to reset my old table? This is with LS1 edit.Thanks

 

yeah man its really easy, if it doesnt work use the old file. im helping out BAIN on here with his and his seemed to be hanging also because iwth the 90mm tb he was at 0 iac steps on warm idle

 

Where are you located at in NC?

 

north of charlotte, by uncc

 

Hopefully related question...

I hooked up my EFI Live tonight, and scanned my car at key on (not started, not running, dead cold)...

My Throttle Position was 1.6%
IAC = 212 steps
MAP = 29.5inHG

I know I have a problem with my drivability (like others on this thread, hanging around 1600 rpm in drive, pushng itself down the road, etc....big cam, auto, big stall, big intake).

I also get a TPS code when the car is started, and I have replaced it. Does the fact that the TPS registers 1.6% with no pedal and key on make sense? Can this be contributing to my idle problem?

Thanks

SDB

 

what is your tps voltage? do a reset, unplug the sensor, turn the key on for a min or so, turn the key off and plug it in, should reset it. or you can drill out the botl holes in the TPS sensor and trim the tab and adjust it yourself to read 0.55-0.57 volts at idle, i bet your idle hangs on you comming to a light and acts all weird, like it never wants to go low enough when stopped??

 

I will do a reset, never knew thatcould reset it! It does hang at 1600 rpm until at a DEAD stop, then it settles back down to where it should be....I will try that prior to retune.

Thanks

SDB

 

All of that can be fixed with the right tune. Not knocking on your tuner, but it doesn't sound like they took the time to get it dialed in like it is supposed to be. All of your issues can be resolved. I just did a guys car with a MS3 with a 4500 on a 346 and it drives great. You should be able to achieve the same with your car. Out of curiousty, who did the tune on your car? You can PM me the info if you don't want it out in the public forum.

 

That is throttle cracker. It is disabled at 1mph which is why the car comes back to idle at a dead stop. TPS code could also be a result of the cam. I have seen this on a few TSP cams. Sounds like a PO121 code.

 

I tried that about 4 months ago, it seemed to work wonders on the car at idle but when you would come to a stop the car would almost die, the RPMs dropeed down to about 400-500. What other table do I need to adjust to make that stop?