Shaner TB Trouble
Shaner TB Trouble I installed a Shaner TB on my 99' T/A. I drove the car about 50 miles with no trouble, and the other day I got the SES light. I already reset the PCM to see if it would come back, and it did. Took the car to autozone to get the code pulled, and it is showing P0507. The guy at Auto Zone said it showed the Idle Control System, and RPM high. So what does all this mean? TIA!
I am pretty sure it's a T15 bit, but a small allen wrench may work also (not sure what size). The screw is in a pretty tight spot, if you can get it with an allen wrench you are ok but if you use the T15 bit you will have to remove the tb, no big deal just 3 bolts and it pops right out. If you want you can flip the screw so the head is on top for easier adjustments in the future.
Do yourself a favor, go ahead and take the TB off, and take the T15 idle screw out and flip it around so you can adjust it from the top, makes like 1000 times easier, next time you need to mess with the idle screw you will be glad you did it
Trending Topics
Thanks for the advice, great tip! Now if I am getting to much air around my TB blade will this make my car run lean? And if it is making my car lean is it OK to drive it as long as I don't run it hard? Thanks again guys!
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
10 LS Engine Myths That Refuse to Die
Verdad Gallardo
TECH Addict
Joined: Feb 2004
Posts: 2,826
Likes: 0
Originally Posted by Black 99 Bird
Thanks for the advice, great tip! Now if I am getting to much air around my TB blade will this make my car run lean? And if it is making my car lean is it OK to drive it as long as I don't run it hard? Thanks again guys!
I never turned my screw around. It is amazing what you can do with a torx bit and a wrench. And the added bonus? I can adjust my blade with the car running. I never did quite understand this whole "flipping the screw" around thing.
Originally Posted by Another_User
No. The air is metered before that point, it will not run lean.
I never turned my screw around. It is amazing what you can do with a torx bit and a wrench. And the added bonus? I can adjust my blade with the car running. I never did quite understand this whole "flipping the screw" around thing.
I never turned my screw around. It is amazing what you can do with a torx bit and a wrench. And the added bonus? I can adjust my blade with the car running. I never did quite understand this whole "flipping the screw" around thing.
My ported TB resulted in lean condition and hunting idle. If you flip the screw around and have a high idle, make sure you have enough thread left to adjust the idle down. I did not.
TECH Addict
Joined: Feb 2004
Posts: 2,826
Likes: 0
Originally Posted by 98A4LS1
My ported TB resulted in lean condition and hunting idle. If you flip the screw around and have a high idle, make sure you have enough thread left to adjust the idle down. I did not.
Originally Posted by Another_User
If you got a lean condition, you had a leak somewhere around that TB.
The idle hunting is annoying but not to bad ~100 rpm, originally 200-250 rpm right after ported TB install. Thanks for the reply!
TECH Addict
Joined: Feb 2004
Posts: 2,826
Likes: 0
Originally Posted by 98A4LS1
You're probably right. I've checked several times now and I can't find a leak.
The idle hunting is annoying but not to bad ~100 rpm, originally 200-250 rpm right after ported TB install. Thanks for the reply!
The idle hunting is annoying but not to bad ~100 rpm, originally 200-250 rpm right after ported TB install. Thanks for the reply!
I'm going to check for leaks one more time today. If I find no leaks, I think I am going to try adjusting the MAF calibration table (ie MAF airflow vs frequency) up 2-3% and see if that helps.
Thanks
Thanks
Well I pulled my tb off today and compared it to my stocker. The stock TB has virtually no gap between the plate and the inside walls of the tb, the ported tb has a very defined gap all around the top of the TB plate, and a small gap at the bottom. I tried adjusting the throttle stop skrew but it did not help, is there anything I can do?
Last edited by Black 99 Bird; Apr 16, 2005 at 05:23 PM.
TECH Addict
Joined: Feb 2004
Posts: 2,826
Likes: 0
Originally Posted by Black 99 Bird
Well I pulled my tb off today and compared it to my stocker. The stock TB has virtually no gap between the plate and the inside walls of the tb, the ported tb has a very defined gap all around the top of the TB plate, and a small gap at the bottom. I tried adjusting the throttle stop skrew but it did not help, is there anything I can do?
When I port a TB I do not take any material out around where the TB blade is at rest(since this is very important for idleing) but you can see slight amount of light around the blade compared to before simply because the lip is no longer there to block line of sight around the blade. Just giving a little info on comparing one that is ported to one that is not. Now if there is an actual gap and no factory machine marks directly where the blade is at rest then the TB has had too much material taken out. One fix is to take the blade out and have a local welder spot weld the bleed hole up and reinstall it and see how it idles then- or install a vette blade since they do not have any bleed holes in them.