PCM Diagnostics & Tuning HP Tuners | Holley | Diablo

PCM Question

Thread Tools
 
Search this Thread
 
Old Dec 25, 2007 | 12:59 PM
  #1  
highheat99's Avatar
Thread Starter
TECH Enthusiast
iTrader: (28)
 
Joined: Dec 2006
Posts: 519
Likes: 0
From: Richmond, Tx
Default PCM Question

how would i know for sure that its my pcm that isnt good anymore? we have checked pretty much everything else. is there anything to check that would tell me for sure that its the pcm? thanks
Reply
Old Dec 25, 2007 | 03:57 PM
  #2  
tording99Z28's Avatar
10 Second Club
iTrader: (3)
 
Joined: Nov 2007
Posts: 1,033
Likes: 2
From: Hampton, VA
Default

Put that PCM in another car and see if it works or not maybe or vice versa and put a known good PCM in your car and see if it corrects the problem which you never really said what the problem is. Does it not run at all?
Reply
Old Dec 25, 2007 | 07:01 PM
  #3  
highheat99's Avatar
Thread Starter
TECH Enthusiast
iTrader: (28)
 
Joined: Dec 2006
Posts: 519
Likes: 0
From: Richmond, Tx
Default

no. will not start. we think it might be something with the security system but not sure what to do
Reply
Old Dec 26, 2007 | 05:39 AM
  #4  
LS1MCSS's Avatar
TECH Junkie
iTrader: (18)
 
Joined: Jan 2006
Posts: 3,831
Likes: 8
From: Dover, Arkansas
Default

Give us some more symptoms. Will the engine crank over at all? Do you have injector pulse, fuel pressure, or fire from the coils?
Reply
Old Dec 26, 2007 | 06:36 AM
  #5  
tording99Z28's Avatar
10 Second Club
iTrader: (3)
 
Joined: Nov 2007
Posts: 1,033
Likes: 2
From: Hampton, VA
Default

Yeah check the baics first. Fuel, Air, and spark. If it won't start chances are one of these are missing from the equation or it could be security related.
Reply
Old Dec 26, 2007 | 08:11 AM
  #6  
wait4me's Avatar
TECH Addict
iTrader: (10)
 
Joined: Feb 2003
Posts: 2,961
Likes: 2
From: warsaw, in
Default

When you turn on the car does the fuel pump run? Also does it just start and die?

If it does not start and die, then it is not the computer security.

I would also not blame the computer before anything else on your car.. They are very tough and it would be hard to have one die.
Reply




All times are GMT -5. The time now is 01:44 AM.

story-0
10 Reasons Daily Driving a Swap Project SUCKS! (& 1 Reason to Do It Anyway)

Slideshow: 10 reasons daily-driving a swap project might not be for you. Or is it?

By Michael S. Palmer | 2026-06-17 09:39:05


VIEW MORE
story-1
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-2
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 | 2026-06-18 10:26:23


VIEW MORE
story-3
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-4
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-5
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-6
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-7
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-8
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-9
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