Stop drilling those TBs, fix stalling without computer tuning...
TECH Enthusiast
Joined: Apr 2004
Posts: 749
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From: Chandler, Arizona
TIMMEH,
I've just put in a TSP 224/581/112 cam. I also have some minor mods like a lid and a 160 stat. I am waiting to receive Stainlessworks LT's, but they aren't due in for another week.
I've got it to idle by opening the blade slightly, resetting the TPS just the way you list it (let me confirm, the TPS is on the throttle shaft? I assume the top switch is the IAC valve). I also go through the idle relearn by letting idle for 5 minutes in nuetral (6 speed) with A/C off. My biggest problem is the "cruise control" effect, it just won't slow down off of 2500 rpm. I can live with it for another couple of weeks, then after the header install I will have the car tuned. I'm just hoping that with the tuning I can eliminate the "cruise control" effect.
Thanks,
Glenn
I've just put in a TSP 224/581/112 cam. I also have some minor mods like a lid and a 160 stat. I am waiting to receive Stainlessworks LT's, but they aren't due in for another week.
I've got it to idle by opening the blade slightly, resetting the TPS just the way you list it (let me confirm, the TPS is on the throttle shaft? I assume the top switch is the IAC valve). I also go through the idle relearn by letting idle for 5 minutes in nuetral (6 speed) with A/C off. My biggest problem is the "cruise control" effect, it just won't slow down off of 2500 rpm. I can live with it for another couple of weeks, then after the header install I will have the car tuned. I'm just hoping that with the tuning I can eliminate the "cruise control" effect.
Thanks,
Glenn
Thread Starter
TECH Addict
Joined: Feb 2004
Posts: 2,826
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Originally Posted by glennhl
TIMMEH,
I've just put in a TSP 224/581/112 cam. I also have some minor mods like a lid and a 160 stat. I am waiting to receive Stainlessworks LT's, but they aren't due in for another week.
I've got it to idle by opening the blade slightly, resetting the TPS just the way you list it (let me confirm, the TPS is on the throttle shaft? I assume the top switch is the IAC valve). I also go through the idle relearn by letting idle for 5 minutes in nuetral (6 speed) with A/C off. My biggest problem is the "cruise control" effect, it just won't slow down off of 2500 rpm. I can live with it for another couple of weeks, then after the header install I will have the car tuned. I'm just hoping that with the tuning I can eliminate the "cruise control" effect.
Thanks,
Glenn
I've just put in a TSP 224/581/112 cam. I also have some minor mods like a lid and a 160 stat. I am waiting to receive Stainlessworks LT's, but they aren't due in for another week.
I've got it to idle by opening the blade slightly, resetting the TPS just the way you list it (let me confirm, the TPS is on the throttle shaft? I assume the top switch is the IAC valve). I also go through the idle relearn by letting idle for 5 minutes in nuetral (6 speed) with A/C off. My biggest problem is the "cruise control" effect, it just won't slow down off of 2500 rpm. I can live with it for another couple of weeks, then after the header install I will have the car tuned. I'm just hoping that with the tuning I can eliminate the "cruise control" effect.
Thanks,
Glenn
TECH Apprentice
Joined: Apr 2003
Posts: 372
Likes: 0
From: Orlando, FL
Originally Posted by glennhl
TIMMEH,
I've just put in a TSP 224/581/112 cam. I also have some minor mods like a lid and a 160 stat. I am waiting to receive Stainlessworks LT's, but they aren't due in for another week.
I've got it to idle by opening the blade slightly, resetting the TPS just the way you list it (let me confirm, the TPS is on the throttle shaft? I assume the top switch is the IAC valve). I also go through the idle relearn by letting idle for 5 minutes in nuetral (6 speed) with A/C off. My biggest problem is the "cruise control" effect, it just won't slow down off of 2500 rpm. I can live with it for another couple of weeks, then after the header install I will have the car tuned. I'm just hoping that with the tuning I can eliminate the "cruise control" effect.
Thanks,
Glenn
I've just put in a TSP 224/581/112 cam. I also have some minor mods like a lid and a 160 stat. I am waiting to receive Stainlessworks LT's, but they aren't due in for another week.
I've got it to idle by opening the blade slightly, resetting the TPS just the way you list it (let me confirm, the TPS is on the throttle shaft? I assume the top switch is the IAC valve). I also go through the idle relearn by letting idle for 5 minutes in nuetral (6 speed) with A/C off. My biggest problem is the "cruise control" effect, it just won't slow down off of 2500 rpm. I can live with it for another couple of weeks, then after the header install I will have the car tuned. I'm just hoping that with the tuning I can eliminate the "cruise control" effect.
Thanks,
Glenn
I have a question. The tb set screw you are talking about. This is the torx screw that is directly under the throttle stop that is quite difficult to get to, correct? Also, the tps is the connection that is on the bottom, like it's inline with the throttle arm, correct? What is the sensor that is on the top side of the throttle body?
Originally Posted by Windy City
You do have to be careful when using an allen wrench since it is a Torx head screw but flipping the screw works even better.
I put mine in from the top and i'm really glad i did, it's so much easier to adjust (as long as the engine's not running lol). If you look the screw protrudes out a couple turns, which is very close to the thickness of the screw's head. If i remember correctly, when i screwed it all the way in from the top it read less than 1% on the throttle position sensor.
As for the other plug on the throttle body think you're talking about the idle air controller motor.
As for the other plug on the throttle body think you're talking about the idle air controller motor.
You guys who are getting the cruise control effect, are your idle air in gear tables stock? I get the cruise control thing sometimes, but i raised my idle air tables to 8.6 g/s warm idle, maybe i shouldn't have? I did notice that once i come to a stop the rpms immediately fall so maybe i should be looking at the throttle cracker airflow vs mph tables instead?
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Brett Foote TECH Enthusiast
Joined: Apr 2004
Posts: 749
Likes: 0
From: Chandler, Arizona
I haven't checked my IAC counts. I'll have to go over to a friends house and use his autotap. However, I know if I go any further in on the idle screw the car will die with the A/C on. It's on the ragged edge now and I still get the "cruise control" effect. I'm going to get it tuned by someone that's done a bunch of LS1's here in Arizona so I know he'll do everything possible. I'm just not sure what can be done as far as tuning.
Thanks,
Glenn
Thanks,
Glenn
On The Tree
Joined: May 2004
Posts: 133
Likes: 0
From: Dallas
First, the sensor you want to unplug is on the top...not the bottom. Second, I'd recommend you put the set screw in so the head is on top. Much easier to deal with.
Glenn, a tuner WILL be able to eliminate the cruise effect with tuning. However you can "band aid" it temporarily by using the method described in this thread. If anyone has edit I'll be glad to walk people through what to adjust in the tables. Just shoot me a pm.
Glenn, a tuner WILL be able to eliminate the cruise effect with tuning. However you can "band aid" it temporarily by using the method described in this thread. If anyone has edit I'll be glad to walk people through what to adjust in the tables. Just shoot me a pm.
TECH Enthusiast
Joined: Apr 2004
Posts: 749
Likes: 0
From: Chandler, Arizona
I need to confirm where the TPS is located. I just assumed that the TPS would be the bottom one on the shaft. I autotapped my car and set the idle screw to where the TPS read 3%. Then I unplugged the bottom connector, turned the car on and then off and replugged in the bottom connector and the TPS read 0%. That told me that the bottom one was the TPS. Could someone please confirm this.
Also, the top one has to be the IAC one because it's located where the bypass air passageway is. It would also be difficult to read a position from the top.
Thanks,
Glenn
Also, the top one has to be the IAC one because it's located where the bypass air passageway is. It would also be difficult to read a position from the top.
Thanks,
Glenn
Thread Starter
TECH Addict
Joined: Feb 2004
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Originally Posted by TIMMEH
First, the sensor you want to unplug is on the top...not the bottom. Second, I'd recommend you put the set screw in so the head is on top. Much easier to deal with.
Glenn, a tuner WILL be able to eliminate the cruise effect with tuning. However you can "band aid" it temporarily by using the method described in this thread. If anyone has edit I'll be glad to walk people through what to adjust in the tables. Just shoot me a pm.
Glenn, a tuner WILL be able to eliminate the cruise effect with tuning. However you can "band aid" it temporarily by using the method described in this thread. If anyone has edit I'll be glad to walk people through what to adjust in the tables. Just shoot me a pm.
I haven't drilled my TB yet, but have adjusted the set screw once. It looks to me as though it had been adjusted before because it is almost all the way screwed in. No matter what I do, I can't get my counts below 90. Any ideas? There are NO leaks on my car BTW.
TECH Enthusiast
Joined: Apr 2004
Posts: 749
Likes: 0
From: Chandler, Arizona
TIMMEH,
Thanks for confirming the TPS is on the bottom. I'll bet you really don't need to reset the TPS as long as you only go a small ways in. I would think there is a tolerance for the idle TPS setting and you are probably still below it.
Thanks,
Glenn
Thanks for confirming the TPS is on the bottom. I'll bet you really don't need to reset the TPS as long as you only go a small ways in. I would think there is a tolerance for the idle TPS setting and you are probably still below it.
Thanks,
Glenn
Originally Posted by P Mack
You screwed it all the way in from the bottom or from the top?
IAC Park Position
37 32 27 25 23 18 14 13 13 13
Idle Air
26.00
24.23
22.24
19.92
16.00
15.00
14.00
13.00
12.50
12.09
11.43
11.23
11.10
11.10
11.10
11.10