Stop drilling those TBs, fix stalling without computer tuning...
#63
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you can get IAC counts in ATAP by using the "desired IAC" instead of the actual IAC since that may not work.
I switched the screw around too. I'm pretty close IAC wise. once you get down around 40 - 50, You need to experiment a bit as the IAC will vary by temp and other factors. Logging on a couple different times, I noticed the car settled into different IAC counts at hot idle (e.g. 175*) each time. Had a variance of around 10. In each case the idle was fine. Point being is that as you close in 30 - 50, you may not want to overshoot it much. I would guess that in the winter with colder, denser air that the IAC count will drop a bit lower.
I switched the screw around too. I'm pretty close IAC wise. once you get down around 40 - 50, You need to experiment a bit as the IAC will vary by temp and other factors. Logging on a couple different times, I noticed the car settled into different IAC counts at hot idle (e.g. 175*) each time. Had a variance of around 10. In each case the idle was fine. Point being is that as you close in 30 - 50, you may not want to overshoot it much. I would guess that in the winter with colder, denser air that the IAC count will drop a bit lower.
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OK I've tried this but I can't get my TPS to reset to 0. What gives...I'm running a g5x3 cam, and I was able to get my iac's down to 70, but it is showing 3%tps, and it is idling at 1300 rpm instead of 950. I backed it down to where it is only reading 0% but my IAC are still at 120. BTW I do not have a hole at all in my throttle blade. Should I drill a small one? What size is the factory hole?
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Originally Posted by WS6snake-eater
OK I've tried this but I can't get my TPS to reset to 0. What gives...I'm running a g5x3 cam, and I was able to get my iac's down to 70, but it is showing 3%tps, and it is idling at 1300 rpm instead of 950. I backed it down to where it is only reading 0% but my IAC are still at 120. BTW I do not have a hole at all in my throttle blade. Should I drill a small one? What size is the factory hole?
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Originally Posted by HC02SS
Did you reset the TPS sensor like mentioned above?
Yes but it will not reset...I'm going to try and drill a hole...does anyone know what size the stock hole is? My blade does not have a hole...I used to have a hole but I epoxied it shut, because it was way too big...My IAC's would start at 20 and work their way down to 0 once the car was warmed up. I figured if I closed off the hole and tried this method I could get it to work. I guess I'm going to need a little of both. Between the big *** cam and the big stall, the vacum is all jacked up. So what is the stock hole size?
FWIW...it did reset the 1st few times I tried it. I think it must have a limit to how far it can actually be open before it will no longer reset itself. I would say that I'm probably at a true 6 or 7 % right now, and it is reading zero but if i go any further it will not reset.
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Originally Posted by WS6snake-eater
Yes but it will not reset...I'm going to try and drill a hole...does anyone know what size the stock hole is? My blade does not have a hole...I used to have a hole but I epoxied it shut, because it was way too big...My IAC's would start at 20 and work their way down to 0 once the car was warmed up. I figured if I closed off the hole and tried this method I could get it to work. I guess I'm going to need a little of both. Between the big *** cam and the big stall, the vacum is all jacked up. So what is the stock hole size?
FWIW...it did reset the 1st few times I tried it. I think it must have a limit to how far it can actually be open before it will no longer reset itself. I would say that I'm probably at a true 6 or 7 % right now, and it is reading zero but if i go any further it will not reset.
FWIW...it did reset the 1st few times I tried it. I think it must have a limit to how far it can actually be open before it will no longer reset itself. I would say that I'm probably at a true 6 or 7 % right now, and it is reading zero but if i go any further it will not reset.
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Originally Posted by Ragtop 99
the stock hole is 5/32". I would start at 1/8" or 9/64". You can always go bigger but it is a pain to go smaller. ![Winky](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_wink.gif)
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Yeah, I'm really not that far off. I was thinking about going with the stock hole size, and then starting over. My original hole was over a 1/4" just to get it to drive...LOL...
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I did this today and it worked! Now my car idles really pretty good. One problem though, now it has that cruise control effect. Give the car gas and let off the accelerator and the car idles at around 2000 rpm for quite some time. Drive down the road and push in on the clutch, the car settles in at around 2000 rpm and the only time it came down today was when I touched the brake. How do I fix this?
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Originally Posted by P Mack
Mine did the same thing. I multiplied the entire throttle cracker table by 1/2 and it's pretty much gone now. I don't know if that's the right way to do it, cause it would probably be better to subtract a certain value rather than dividing but it's good enough for me.
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Originally Posted by Another_User
I suppose there could be a limit. I went a good 10% into it though and never hit it. Of course I had to back it down too...that was too far.
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Me and the tuner messed with the IAC till we were blue in the face. Drilling was the only method we could make work with my stock heads and a 224/228 .573/.603 N2O cam.
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Heres another question then. When I took the car back over to APE, they drilled the tb plate larger instead of doing anything with the IAC. What if I filled the hole and redrilled the hole starting at 1/8"? Maybe the hole is a little too big now after doing this to the iac's?
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Originally Posted by SS125
Heres another question then. When I took the car back over to APE, they drilled the tb plate larger instead of doing anything with the IAC. What if I filled the hole and redrilled the hole starting at 1/8"? Maybe the hole is a little too big now after doing this to the iac's?
That's exactly what I did...You can make it work