TB removal and then some!!!

[Roadster]

Originally Posted by S.hafsmo

I thought it wasn't supposed to go to zero at idle? Zero would mean it's cannot close further, and thus no longer controls the idle (=air leak)?

It's not suppose to go to "0" as you mentioned...I just don't know why it did and then after using the AC it went to 6 or 7. In other words why did it go to "0" to begin with is the question.....obviously something is not right, but it idles great......

Late update.....just had a long phone conversation and have a better understanding of my situation. I'm on the right track, just need to make some more minor adjustments with the TPS and min-air. I'm almost there.....

[nelson007]

Looks great.

Nelson

[Roadster]

Originally Posted by nelson007

Looks great.

Nelson

Thanks Nelson, appreciated.....still have much more to do, but it is better than it was......

BTW, send you a PM recently, hope you check it out......

[HAWAIIZR-1]

Congratulations Tom and great job with this project. Thanks for taking time to document and share. I'm sure you'll find a new project soon and I can't wait to follow along and I'll be a sponge sucking up this info.


Sent from my iPhone using ZR-1 Net Registry

[gtcollins@maxnet.co.nz]

Hi Tom great to see it going again awesome to see it idling at the correct speed also good that you are happy with it

Sent from my SM-G930F using ZR-1 Net Registry mobile app

[Roadster]

Originally Posted by HAWAIIZR-1

Congratulations Tom and great job with this project. Thanks for taking time to document and share. I'm sure you'll find a new project soon and I can't wait to follow along and I'll be a sponge sucking up this info.


Sent from my iPhone using ZR-1 Net Registry

Glad you are enjoying the thread Craig, still more to do with the minor adjustments. Always projects going on, never ending.....

Originally Posted by gtcollins@maxnet.co.nz

Hi Tom great to see it going again awesome to see it idling at the correct speed also good that you are happy with it

Sent from my SM-G930F using ZR-1 Net Registry mobile app

Hello and thanks Glen, yes very happy with the idle speed but as mentioned above and previous posts, just maybe another minor tweak or two, to keep those IAC's in an acceptable range. If I get them to stay up above a 10 count or higher during idle on a consistent basis, I will be satisfied......

[tnova]

I've been following the posts closely as I'm rebuilding my LT5 (160k miles) to with GVD full porting including the TB. I'll have to go through the idle setting. Short block is done, waiting on the top end but not rushing. Thanks.
Tony

[Roadster]

Originally Posted by tnova

I've been following the posts closely as I'm rebuilding my LT5 (160k miles) to with GVD full porting including the TB. I'll have to go through the idle setting. Short block is done, waiting on the top end but not rushing. Thanks.
Tony

Tony, glad the posts may help you out. On the idle issue from what I have learned from reading and relayed by phone conversations is to let the engine warm up fully to operating temps in Closed Loop. Check your IAC's and TPS settings. It would also be good to have access to a Tech 1 or similar scanning device. After fully warmed up check your IAC counts at idle to see where they fall and also check your idle. If your counts and idle are within the range, then go far a test drive and do multiple stops and starts making sure you come to full complete stops for more than a few seconds. Each time you come to a complete stop, check where your IAC counts are and what your idle is doing. If you need to make adjustments to bring your IAC counts up, you will need to turn the min-air adjustment screw counter clockwise (which will close the primary blade more) ever, ever so very slightly for each adjustment you do. Blip the throttle and let the idle settle down for a few, and then set your TPS to .54v, again blip the throttle and let everything settle down. Then what I feel is the most important item, is to go for a test drive like you previously did and follow the same procedure as you did before. Come back and take your readings again, make any adjustments
that you need to do to get your counts in range.
If your idle is higher than it should be, then you may have a different or additional problem that will need to be addressed.
Most of you probably already know this, but I thought I would post what is working for me. This has been quite a learning experience for me and I very much appreciate the certain individual who has educated me through this during this time.

[Ccmano]

Originally Posted by tnova

I've been following the posts closely as I'm rebuilding my LT5 (160k miles) to with GVD full porting including the TB. I'll have to go through the idle setting. Short block is done, waiting on the top end but not rushing. Thanks.
Tony

Not to hijack the thread, Tony why did u decide to rebuild at 160k miles? Mine is at 181k but compression is strong. Other than possible chain stretch is see no reason to rebuild just yet.
H

[tnova]

Thanks. I've got a Tech 1 and will be following the procedure you provided.
Tony