TPS Voltages and Holley 105 TB - LS1TECH - Camaro and Firebird Forum Discussion

Notices
Generation III External Engine LS1 | LS6 | Bolt-Ons | Intakes | Exhaust | Ignition | Accessories
Sponsored by:
Sponsored by:

TPS Voltages and Holley 105 TB

Reply

Old 04-16-2018, 04:52 PM
  #1  
TECH Fanatic
Thread Starter
iTrader: (10)
 
NHRATA01's Avatar
 
Join Date: Jan 2002
Location: Dutchess, New York
Posts: 1,723
Default TPS Voltages and Holley 105 TB

Been working out the startup kinks in my motor build, and like most new setups chasing idle and low speed issues. Did the basics and took TPS voltage readings, started off with 0.744V closed and 4.58V WOT. Did the TPS reset and dropped to 0.738V closed. Explains why it won't idle cold and struggles warm.

So since the Holley has the ability to clock the TPS, I rotated it a few clicks and took new measurements. Now I get 0.519V closed and 4.28V WOT. So that's good for idle but I'm concerned the voltage won't be high enough for the ecm to go into WOT.

I could try backing out the TB set screw a bit to drop the idle voltage, but I was worried the Holley factory setting was pretty much at bottom and didn't want to mess with it except as a last resort (more common to turn the set screw in to bump up the idle), don't want any blade sticking issues either.

Any suggestions/thoughts? Thanks.
NHRATA01 is offline  
Reply With Quote
Old 04-16-2018, 05:17 PM
  #2  
10 Second Club
iTrader: (4)
 
Darth_V8r's Avatar
 
Join Date: Jul 2014
Location: My own internal universe
Posts: 6,196
Default

Opening that bleed screw is a very nice tuning feature
Darth_V8r is offline  
Reply With Quote

Thread Tools
Search this Thread

Archive Advertising Cookie Policy Privacy Statement Terms of Service

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: