I have a boosted dilema. opinions please
#32
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Location: Bandera, TX
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i didn't read your entire thread, but I had the same issue when I put my 427 in for some reason. anything over 12 psi put it in REP. even tho the exact same setup had no issue with 20 psi on my 6.0.... I changed out every part, TB, TB harness, Tons of sensors.... i gave up and did a nelson stand alone harness with 02 camaro pcm and cable TB, have never had an issue since. This is the only thing that fixed mine. good luck
#33
TECH Fanatic
I know this sounds like a shot in the dark, but can you log battery voltage during the run? If the alternator is dropping out at higher revs the throttle motor will lose torque momentarily too. Between that, the blade spring and the vacuum it could theoretically be a problem.
I also found this on LS1TECH. Not sure that it applies to your exact problem though:
" Go to engine diagnostic and multiply the 1514 table 200%."
I also found this on LS1TECH. Not sure that it applies to your exact problem though:
" Go to engine diagnostic and multiply the 1514 table 200%."
Last edited by Suburbazine; 06-24-2012 at 10:03 AM.
#35
I have been in contact with several very experienced tuners, and they state that a P2101 can not be tuned out. All of the tables associated with the ETC have been increased properly. I will check a battery voltage log later today to see what that shows. I truly feel it is a design flaw with the TB. The blade is offset in the hole letting more air enter one side. Well the more air is moving faster and causing a vacuum like an airplane wing. I am going to order an LS2 TB and see if the offset in the other direction will help keep it opened. If that doesn't work I might weld in dividers so the blade will line up and cut the air without putting stress on the blade. I can't find the proper magnets to upgrade the motor. I might look into a cable swap. I'm sure that would correct it. I don't plan on spending too much time on it this year, I really want to get my Chevelle done. If I can't get it fixed easily, I am just going to swap to a turbo.
#39
Admin
iTrader: (22)
Hmmm. Gold blade should be LS3, this is what I have. ( opens opposite LS7 from what I recall, LS7/LS2 are same I believe) I have heard of this issue alot on truck throttle bodies but not the LS3. If you send me a copy of your tune I can look to see if I see anything. I had a 87mm truck TB that would act up similar on a TBSS I tuned.