PCM Diagnostics & Tuning HP Tuners | Holley | Diablo

Change in Elevation and Trouble Idleing

Thread Tools
 
Search this Thread
 
Old Dec 28, 2008 | 12:04 PM
  #1  
algws6's Avatar
Thread Starter
TECH Fanatic
iTrader: (3)
 
Joined: Jun 2003
Posts: 1,139
Likes: 0
From: El Paso
Default Change in Elevation and Trouble Idleing

a well known tuner help me set up my tune here in el paso (around 4k) and the car runs perfect. a few weeks ago i trailered the car to houston to run at hrp. i took it cruising around for a day to get used to the elevation change but it had trouble idleing when i would come to a stop. i had a chance to look at the wb and it would go rich. the car ran fine running part and wot. any ideas?
Reply
Old Dec 28, 2008 | 05:41 PM
  #2  
algws6's Avatar
Thread Starter
TECH Fanatic
iTrader: (3)
 
Joined: Jun 2003
Posts: 1,139
Likes: 0
From: El Paso
Default

Originally Posted by 1bad lad
how rich is rich and how much o2 activity do u have at idle??? whats ur timing at idle post up the file
it was dipping into the 11s until it found the idle at 800. the file is on my laptop at work so ill post it tomorrow.

Last edited by algws6; Dec 29, 2008 at 03:11 PM.
Reply
Old Dec 29, 2008 | 10:10 AM
  #3  
WeathermanShawn's Avatar
TECH Enthusiast
iTrader: (1)
 
Joined: Dec 2005
Posts: 549
Likes: 0
From: Denver International Airport, Colorado USA
Default

It probably just needs to relearn Idle Trims.

It should do a BARO update along with Trims in the first 50 miles.

Somewhat of a unique problem. Trailering it down to lower elevations, it probably never did a BARO update till you restarted and met the min RPMS to initiate a relearn.

Hope that makes sense. It 'should' adjust itself in short time.

..WeathermanShawn..
Reply
Old Dec 29, 2008 | 03:09 PM
  #4  
algws6's Avatar
Thread Starter
TECH Fanatic
iTrader: (3)
 
Joined: Jun 2003
Posts: 1,139
Likes: 0
From: El Paso
Default

here is a log. notice i have to bump the accelerator when she goes rich.
Attached Files
File Type: hpl
hrp2.hpl (148.7 KB, 86 views)
Reply
Old Dec 30, 2008 | 03:13 PM
  #5  
98redorangeta's Avatar
12 Second Club
iTrader: (10)
 
Joined: Sep 2005
Posts: 948
Likes: 0
From: From Ohio now in that state up north
Default

The baro sensor probably isnt adjusting to the new elevation. Let it run in the new elevation and it should be ok. The car is ment to adjust as u drive to new elevation when u tralior the car it never gets that chance.
Reply




All times are GMT -5. The time now is 06:18 PM.

story-0
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-1
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-2
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-3
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-4
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-5
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
story-6
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

Slideshow: A one-off sports car that looks like a vintage Italian exotic-but hides a C6 Corvette underneath-just sold for the price of a new mid-engine Corvette.

By Verdad Gallardo | 2026-03-23 18:53:41


VIEW MORE
story-7
Awesome K5 Blazer Restomod Comes With C7 Corvette Power

Slideshow: A heavily reworked 1972 K5 Blazer swaps its off-road roots for a low-slung street-focused build with modern V8 power.

By Verdad Gallardo | 2026-03-09 18:08:45


VIEW MORE
story-8
10 Camaros You Should Never Buy

Slideshow: There are thousands of used Camaros on the market but we think you should avoid these 10

By | 2026-02-17 17:09:30


VIEW MORE
story-9
10 LS Engine Myths That Refuse to Die

Slideshows: Which one of these myths do you believe?

By Verdad Gallardo | 2026-01-28 18:10:11


VIEW MORE