TAC/PCM/LS3 TB confusion?!?!
Thread Starter
Racer
Joined: Oct 2008
Posts: 483
Likes: 4
From: Cincinnati OH
TAC/PCM/LS3 TB confusion?!?!
Okay, So I just added an ls3 90mm TB along with a FAST 102 manifold, to go along with my cam, etc.. On my 2003 zo6.
The car starts and idles fine, it takes some throttle response fine. However, if you rev the engine a few times, or with the engine off, and car keyed-on and take it to WOT, the blade moves, but eventually I get the Reduced Engine power, from either p1515 or p1516 (had it happen both ways)
I have seen from some lots of searching some random mentionings that the TAC module needs swapped out? But nothing definitive, and doesnt seem to be common. I am definitely not the first to put an ls2/ls3 tb on my car, so what gives? Is it the TAC? Is it my casper electronics wiring harness adapter (the pinout seemed to be right though, unless a wire is loose?)
The car starts and idles fine, it takes some throttle response fine. However, if you rev the engine a few times, or with the engine off, and car keyed-on and take it to WOT, the blade moves, but eventually I get the Reduced Engine power, from either p1515 or p1516 (had it happen both ways)
I have seen from some lots of searching some random mentionings that the TAC module needs swapped out? But nothing definitive, and doesnt seem to be common. I am definitely not the first to put an ls2/ls3 tb on my car, so what gives? Is it the TAC? Is it my casper electronics wiring harness adapter (the pinout seemed to be right though, unless a wire is loose?)
Vettaholic
Joined: Jun 2006
Posts: 183
Likes: 0
From: Wherever I drive my vette
I have had also issues with a LS2 TB swap.
In my case the caspers electronics adapter harness was faulty (+5V and ground wires swapped.... ouch
)
Details here:
http://forums.corvetteforum.com/c5-t...brand-new.html
Lucky131969 might be able to help you.
Check that the brown and yellow wires are not reversed and that all connexions are tight for the position sensor 1 and 2.
Goos luck
In my case the caspers electronics adapter harness was faulty (+5V and ground wires swapped.... ouch
)Details here:
http://forums.corvetteforum.com/c5-t...brand-new.html
Lucky131969 might be able to help you.
Check that the brown and yellow wires are not reversed and that all connexions are tight for the position sensor 1 and 2.
Goos luck
