Removing TB: anything I should be aware of?
09-11-2008, 02:10 PM
#31
its more for if they're having snow or something and the air being sucked into the intake is really cold and moist, it can start to accumulate on the throttle blade and cause stickage. But if I lived up north, i would keep it on just because the gains seen from this mod are VERY VERY small. But if you live down in texas like me, theres really no point in having it on there.
09-11-2008, 02:55 PM
#32
I'm guessing that the vacuum from the engine and incoming air pushing against the tb has something to do with it being harder to operate with the engine running.
As for how my tb got warped, I'm not sure, but it was a enough of a problem with the early NBS's that GM issued a TSB about it.
Is your linkage and accelerator cable OK? Maybe try disconnecting the cruise cable and seeing if the problem still exists.
As for how my tb got warped, I'm not sure, but it was a enough of a problem with the early NBS's that GM issued a TSB about it.
Is your linkage and accelerator cable OK? Maybe try disconnecting the cruise cable and seeing if the problem still exists.
09-11-2008, 04:25 PM
#34
Chevy all the way,
Spray some seafoam "deep creep" into your TB. That solved the sticking on my old TB which was due to carbon buildup. However, this is not the case for me currently. The TB I put in was so clean it looked new. It also opens effortlessly when the truck is off. I'm stumped.
Spray some seafoam "deep creep" into your TB. That solved the sticking on my old TB which was due to carbon buildup. However, this is not the case for me currently. The TB I put in was so clean it looked new. It also opens effortlessly when the truck is off. I'm stumped.
09-14-2008, 06:49 PM
#36
I had to put the stock TB back on. I couldn't deal with the sticking anymore. But now I have an idiling problem. When I drive and come to a stop light my rpms will drop to 3-400 instead of the normal 500. I believe the computer is expecting more air than is coming in due to me having the ported TB prior. Will the computer learn and compensate for this?
edit: computer fixed the idle.
But my truck is a complete dog now
With the cutout closed, the stock TB back on, and 1.5" taller tires (3.31 effective gear ratio) it just sucks
edit: computer fixed the idle.
But my truck is a complete dog now
With the cutout closed, the stock TB back on, and 1.5" taller tires (3.31 effective gear ratio) it just sucks
Last edited by GMCtrk; 09-14-2008 at 08:49 PM.
09-15-2008, 12:05 AM
#37
Open the throttle blade slightly by using the throttle screw. Maybe a 1/4 turn or so.
I used my much less than awesome MSPaint skills
to show you what/where it is.
You can do it while it's off the truck. The "trick" thing to do, is to remove that Torx screw and install it from the other side. That way it is 10X easier to access when it's on the truck. I "think" it's a T-15 torx bit, but not 100% positive.
I'll all but guarantee this "cures" your problem...
I used my much less than awesome MSPaint skills
to show you what/where it is.You can do it while it's off the truck. The "trick" thing to do, is to remove that Torx screw and install it from the other side. That way it is 10X easier to access when it's on the truck. I "think" it's a T-15 torx bit, but not 100% positive.
I'll all but guarantee this "cures" your problem...
09-15-2008, 12:54 AM
#38
Open the throttle blade slightly by using the throttle screw. Maybe a 1/4 turn or so.
I used my much less than awesome MSPaint skills to show you what/where it is.
You can do it while it's off the truck. The "trick" thing to do, is to remove that Torx screw and install it from the other side. That way it is 10X easier to access when it's on the truck. I "think" it's a T-15 torx bit, but not 100% positive.
I'll all but guarantee this "cures" your problem...
I used my much less than awesome MSPaint skills
to show you what/where it is.You can do it while it's off the truck. The "trick" thing to do, is to remove that Torx screw and install it from the other side. That way it is 10X easier to access when it's on the truck. I "think" it's a T-15 torx bit, but not 100% positive.
I'll all but guarantee this "cures" your problem...
I did that to mine as well because it was sticking too. Haven't had any problems since and its been a couple of years.
09-15-2008, 08:49 AM
#39
Open the throttle blade slightly by using the throttle screw. Maybe a 1/4 turn or so.
I used my much less than awesome MSPaint skills to show you what/where it is.
You can do it while it's off the truck. The "trick" thing to do, is to remove that Torx screw and install it from the other side. That way it is 10X easier to access when it's on the truck. I "think" it's a T-15 torx bit, but not 100% positive.
I'll all but guarantee this "cures" your problem...
I used my much less than awesome MSPaint skills
to show you what/where it is.You can do it while it's off the truck. The "trick" thing to do, is to remove that Torx screw and install it from the other side. That way it is 10X easier to access when it's on the truck. I "think" it's a T-15 torx bit, but not 100% positive.
I'll all but guarantee this "cures" your problem...
Michael
09-15-2008, 12:03 PM
#40
Guys, got it fixed. It was exactly what rel3rd said. The idle screw is indeed a T-15. I inverted the screw and raised it a bit. It took me several adjustments but now the pedal is smooth as can be. The idle went up to about 600 from 500. No big deal. I love this forum.