Forced Induction Superchargers | Turbochargers | Intercoolers

Starts Then Dies Immediately - Intermittent

Thread Tools
 
Search this Thread
 
Old Aug 11, 2011 | 12:54 AM
  #1  
93BlackBeast's Avatar
Thread Starter
On The Tree
iTrader: (31)
 
Joined: Feb 2005
Posts: 148
Likes: 0
From: Van Buren, AR
Default Starts Then Dies Immediately - Intermittent

I figure I'll post this over here since my car is FI. I'll throw another one up in general maintenance.

Dilemma is, just got my new build running and all looks well. Thing is, sometimes (like 3 or 4 times in a row), I'll turn the key over to start it and it will fire right up, but IMMEDIATELY die. I can't give it pedal or anything to try and keep it running. And when I say immediately, I mean immediately. You know how when you start a car and it revs up a little higher than the idle RPM and then comes back down to close to idle RPMs. Well, mine will rev up to the higher and then drop all the way down to 0 instantly.

I've read and read and read and tried several different things, such as changing keys, thinking its the resistor in the key, looked at my tune with HP tuners, made sure it wasn't some weird column lock/vats/other random thing....no luck.

But then, after three or four failed attempts, it'll start the exact same way, and then just stay idling...and I'll go drive it for a while....aggravating..

Any input is greatly appreciated.
Reply
Old Aug 11, 2011 | 05:33 AM
  #2  
Orange99Z's Avatar
10 Second Club
iTrader: (25)
 
Joined: Jan 2004
Posts: 405
Likes: 0
From: Western MD
Default

I had a car that I could get it and drive anywhere as long as I didn't shut it off. Then it would randomly just crank & not start but sometimes it would. Ended up being the ignition relay in the fuse block under the hood.
Reply
Old Aug 11, 2011 | 01:16 PM
  #3  
93BlackBeast's Avatar
Thread Starter
On The Tree
iTrader: (31)
 
Joined: Feb 2005
Posts: 148
Likes: 0
From: Van Buren, AR
Default

See, that's the thing...my car will start every time...just not stay running every time...so I don't know what to think.
Reply
Old Aug 12, 2011 | 01:14 AM
  #4  
yessir's Avatar
Launching!
iTrader: (5)
 
Joined: Jul 2008
Posts: 283
Likes: 0
Default

my car did the same crap...ended up being a bad connection to the water temp sensor.Would do that start and die thing, id wiggle the plug untill it would run.I eventually changed the clip on the harness and the sensor for good measure
Reply
Old Aug 12, 2011 | 06:36 AM
  #5  
Bob@BruteSpeed's Avatar
LS1Tech Sponsor
20 Year Member
Active Streak: 30 Days
Active Streak: 60 Days
Liked
iTrader: (16)
 
Joined: Mar 2003
Posts: 21,020
Likes: 35
From: Roanoke, IN
Default

Do you have a fuel pressure gauge? Bob
__________________
ATI ProCharger and Moser Sales 260 672-2076

PM's disabled, please e-mail me
E-mail: brutespeed@gmail.comob@brutespeed.com

https://brutespeed.com/ Link to website


Reply
Old Aug 12, 2011 | 08:29 AM
  #6  
93BlackBeast's Avatar
Thread Starter
On The Tree
iTrader: (31)
 
Joined: Feb 2005
Posts: 148
Likes: 0
From: Van Buren, AR
Default

Hey Bob,

I sure do. It has an AEM digital one and reads a rock solid 60 lbs even as it is dying...one of the first things I checked too.

As for the water temp sensor, I log it every time I try and start it and it is able to read coolant temp the entire time...so if it wasn't a good connection on the sensor, I figure that it'd show on the logs that I'm not receiving data..I'll check the connections and condition of the wires going to it though.

Thanks for the input though guys
Reply
Old Aug 12, 2011 | 09:04 AM
  #7  
ren987's Avatar
Launching!
iTrader: (4)
 
Joined: May 2008
Posts: 265
Likes: 0
Default

You might check the ground straps on the back of the head, mine came loose once causing the car to die at odd times.
Reply
Old Aug 12, 2011 | 04:55 PM
  #8  
yessir's Avatar
Launching!
iTrader: (5)
 
Joined: Jul 2008
Posts: 283
Likes: 0
Default

when i had the water temp sensor issue on the dyno when the sensor wasnt connected properly the temp reading would defalut to a set temp( 130 i belive)
Reply
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

 Pouria Savadkouei
story-1

Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

 Verdad Gallardo
story-2

7 Most Reliable High-Performance Engines GM Has Ever Built

 Verdad Gallardo
story-3

Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

 Verdad Gallardo
story-4

6 Common C5 Corvette Failures and What's Involved In Repairing Them

 Pouria Savadkouei
story-5

Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

 Verdad Gallardo
story-6

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-7

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-8

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo
story-9

Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

 Verdad Gallardo
Old Aug 13, 2011 | 01:45 AM
  #9  
93BlackBeast's Avatar
Thread Starter
On The Tree
iTrader: (31)
 
Joined: Feb 2005
Posts: 148
Likes: 0
From: Van Buren, AR
Default

i'll check my coolant temp when the car fails to stay running and see if it has defaulted to this 130 number...but when it is running, it is fine and reading correctly...so one more thing to check out. Thanks for the help
Reply
Old Aug 13, 2011 | 06:44 AM
  #10  
yessir's Avatar
Launching!
iTrader: (5)
 
Joined: Jul 2008
Posts: 283
Likes: 0
Default

not sure exactly what the number was, but basically my tuner said that the pcm was miss fueling the engine on startup because of the faulty signal
Reply
Old Aug 14, 2011 | 11:26 PM
  #11  
3timeracin's Avatar
Launching!
iTrader: (15)
 
Joined: Jan 2008
Posts: 214
Likes: 0
From: 81 NY support
Default

when the passlock or vats systems or even the key cylinder start to go bad they do the same thing I had a 2002 GMC did the same thing so I cut the passlock wires and installed a resistor and never did it again ?
Reply
Old Aug 15, 2011 | 09:47 PM
  #12  
93BlackBeast's Avatar
Thread Starter
On The Tree
iTrader: (31)
 
Joined: Feb 2005
Posts: 148
Likes: 0
From: Van Buren, AR
Default

Originally Posted by 3timeracin
when the passlock or vats systems or even the key cylinder start to go bad they do the same thing I had a 2002 GMC did the same thing so I cut the passlock wires and installed a resistor and never did it again ?
Do you have any more info on what size resistor you used and what wires you connected it between? This is along the lines of what i think my problem is. I tried my second set of keys with the little resistor in it, and from what ive read, the value in the chip on the key varies around 20 ohms. I also read there is a relearn procedure if you happen to lose your keys and have to get another...so maybe that in combination with the hard wiring of the resistor will get me going.

Thanks for the input, i appreciate it!
Reply




All times are GMT -5. The time now is 10:41 AM.

story-0
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-1
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-2
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-3
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-4
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-5
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-6
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-7
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-8
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-9
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