PCM Diagnostics & Tuning HP Tuners | Holley | Diablo

Any good tips?

Old Jan 1, 2008 | 12:08 PM
  #1  
LS1Silverado05's Avatar
Thread Starter
TECH Addict
20 Year Member
Shutterbug
Liked
Loved
iTrader: (41)
 
Joined: Jun 2005
Posts: 2,374
Likes: 1
From: Classified
Default Any good tips?

We are in the begining stages of tuning my cam only combo. So far there are two main issues I am having. One..on a cold start it will hunt itself to an idle, but as soon as it goes in gear it comes very close to dying and you really need to use some pedal to keep it running. Once it is 100% warm it will still do that but only if you go to drive off within the first minute or so. The TB has been cracked open a little and the TPS has been unplugged and reset. I wouldnt think I should be that hard to tune an idle to, my mods are not that extensive. Problem two is somewhat intermitent...lockup on the highway in 4th will lock positively but after 30 minutes or so of highway at 65 or so... when in low throttle it acts like it wants to hover between locked and unlocked, and it seems like the lockup clutch is slipping...but if I roll into the gas it will engage very well and I can accelerate strong with it locked in 4th. Any ideas...? Some kind of partial throttle lockup thing?..It never happens right away...only after an extensive highway jaunt...but 3rd locks up and will never do this if I stay in 3rd locked.
Reply
Old Jan 1, 2008 | 12:18 PM
  #2  
LS1MCSS's Avatar
TECH Junkie
iTrader: (18)
 
Joined: Jan 2006
Posts: 3,831
Likes: 8
From: Dover, Arkansas
Default

What are you using to tune it, HPT or EFI Live? I believe, but am not certain, that the lockup problem can be cured in the TCC duty cycle, in HPT. Join the HPT forum and search for idle surge. There are saveral posts on how to cure it.
Reply
Old Jan 1, 2008 | 12:43 PM
  #3  
Frost's Avatar
FormerVendor
iTrader: (45)
 
Joined: Jul 2005
Posts: 5,913
Likes: 2
From: Richmond VA
Default

post your tune
Reply


Thread Tools
Search this Thread

All times are GMT -5. The time now is 11:29 PM.

story-0
6 Gifts Neither Your Dad Nor Grad Will Shove Into the 'Trinket Drawer'

Don't get dad new socks or a grill brush this year.

By Brett Foote | 2026-06-09 14:55:56


VIEW MORE
story-1
Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

Slideshow: We take a close look at the ONE and Artidiag 800BT2 diagnostic tools from Topdon and the reasons to buy one over the other.

By Pouria Savadkouei | 2026-05-28 11:05:11


VIEW MORE
story-2
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

Slideshow: The controversial Ferrari F6 swaps its original flat-12 for a Corvette Z06-derived LT4 V8 and sends power to four rear wheels through a custom-built drivetrain.

By Verdad Gallardo | 2026-05-26 18:23:54


VIEW MORE
story-3
7 Most Reliable High-Performance Engines GM Has Ever Built

Slideshow:These GM engines didn't just make huge power, they survived abuse, boost, track days, and six-digit mileage with a reputation for refusing to quit.

By Verdad Gallardo | 2026-05-21 16:45:27


VIEW MORE
story-4
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

Slideshow: This heavily modified 1971 Camaro mixes classic muscle car styling with a fifth-generation Camaro interior and modern LS3 power.

By Verdad Gallardo | 2026-05-12 18:06:42


VIEW MORE
story-5
6 Common C5 Corvette Failures and What's Involved In Repairing Them

Slideshow: From wobbling harmonic balancers to failed EBCMs, these are the issues that define long-term C5 ownership and what repairs typically involve.

By Pouria Savadkouei | 2026-05-07 18:44:57


VIEW MORE
story-6
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Slideshow: A modern Camaro transformed into a retro icon, this limited-run "Bandit" build blends nostalgia with brute force in a way few revivals manage.

By Verdad Gallardo | 2026-04-21 13:57:02


VIEW MORE
story-7
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Slideshow: Cadillac didn't just crash the high-performance luxury vehicle party, it showed up loud, supercharged, and occasionally a little unhinged...

By Pouria Savadkouei | 2026-04-16 10:05:15


VIEW MORE
story-8
Top 10 Most Powerful Chevy Trucks Ever Made!

Slideshow: Top ten most powerful Chevy trucks ever made

By | 2026-03-25 09:22:26


VIEW MORE
story-9
Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Slideshow: Hennessey has turned the Silverado ZR2 into a 700-hp off-road monster with supercharged V8 power and a limited production run.

By Verdad Gallardo | 2026-03-24 18:57:52


VIEW MORE