General Maintenance & Repairs Leaks | Squeaks | Clunks | Rattles | Grinds
Sponsored by:
Sponsored by: CARiD

Hard to Start

Thread Tools
 
Search this Thread
 
Old Jun 22, 2011 | 04:50 PM
  #1  
jordjet13's Avatar
Thread Starter
Teching In
 
Joined: Aug 2010
Posts: 7
Likes: 0
Default Hard to Start

Hey Guys,
I have a '98 Trans Am with an LS3 that I recently bought from a friend. The car cranks fine and appears to be getting fuel but sometimes takes four or more cranking sessions before it will start. Once the car is started it runs great and doesn't appear to have any issues. Any suggestions? Someone suggested that maybe the Cam sensor was going bad. Does that sound possible? Any suggestions would be greatly appreciated.
Reply
Old Jun 22, 2011 | 05:25 PM
  #2  
dontbl1nk's Avatar
On The Tree
iTrader: (1)
 
Joined: Nov 2010
Posts: 124
Likes: 1
From: Tulsa, OK
Default

maybe the fuel pump? Get your fuel pressure tested.
Reply
Old Jun 22, 2011 | 07:40 PM
  #3  
71novaguy's Avatar
Banned
iTrader: (2)
 
Joined: Aug 2009
Posts: 591
Likes: 1
Default

fuel pressure regulator?
Reply
Old Jun 23, 2011 | 09:32 AM
  #4  
wssix99's Avatar
Save the manuals!
15 Year Member
iTrader: (5)
 
Joined: Dec 2007
Posts: 12,967
Likes: 389
From: Chicago, IL
Default

Probably either spark or fuel but I'd look at spark first.

How old is the battery and how old are the spark plugs? (In the heat of summer, your battery may be struggling or could be low on fluid - if its unsealed.)
Reply
Old Jun 24, 2011 | 07:20 PM
  #5  
jordjet13's Avatar
Thread Starter
Teching In
 
Joined: Aug 2010
Posts: 7
Likes: 0
Default

Thanks, Ill check the fuel pressure. I just replaced the battery and that doens't seem to have changed anything. I believe the plugs are new as well. Im thinking the problem has something to do with spark or something that regulates when the engine sparks. Does anyone know about Cam Sensors?
Reply
Old Jun 24, 2011 | 08:13 PM
  #6  
poltergeist 02's Avatar
TECH Fanatic
10 Year Member
iTrader: (65)
 
Joined: Jan 2010
Posts: 1,402
Likes: 3
Default

fuel filter or pump? maf, iac, tps, map sensors? any codes? need more info. does it seem down on power?
Reply
Old Jun 25, 2011 | 12:46 PM
  #7  
jordjet13's Avatar
Thread Starter
Teching In
 
Joined: Aug 2010
Posts: 7
Likes: 0
Default

There car isn't pulling any codes, and isn't down on power at all. I have checked the MAF sensor and it seems to be working fine.
Reply
Old Jun 25, 2011 | 01:57 PM
  #8  
wssix99's Avatar
Save the manuals!
15 Year Member
iTrader: (5)
 
Joined: Dec 2007
Posts: 12,967
Likes: 389
From: Chicago, IL
Default

Originally Posted by jordjet13
Thanks, Ill check the fuel pressure. I just replaced the battery and that doens't seem to have changed anything. I believe the plugs are new as well. Im thinking the problem has something to do with spark or something that regulates when the engine sparks. Does anyone know about Cam Sensors?
If any of the sensors were off, you'd know it when driving.

I'd go to the spark plugs next and then do a carbon cleaning after that. How many miles are on the plugs/engine?
Reply
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

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

 Verdad Gallardo
story-1

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

 Pouria Savadkouei
story-2

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

 Verdad Gallardo
story-3

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-4

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-5

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo
story-6

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

 Verdad Gallardo
story-7

Awesome K5 Blazer Restomod Comes With C7 Corvette Power

 Verdad Gallardo
story-8

10 Camaros You Should Never Buy

 
story-9

10 LS Engine Myths That Refuse to Die

 Verdad Gallardo
Old Jun 26, 2011 | 12:22 PM
  #9  
jordjet13's Avatar
Thread Starter
Teching In
 
Joined: Aug 2010
Posts: 7
Likes: 0
Default

Ill check the plugs and make sure they are good. The engine only has approximently 10,000 miles on it, so I wouldn't think there would be much carbon build-up.
Reply
Old Jun 26, 2011 | 06:49 PM
  #10  
myk's Avatar
myk
TECH Fanatic
15 Year Member
Liked
Loved
iTrader: (4)
 
Joined: May 2007
Posts: 1,882
Likes: 13
From: Sun Diego
Default

LS3 T/A, cool...
Reply
Old Jun 26, 2011 | 10:15 PM
  #11  
wssix99's Avatar
Save the manuals!
15 Year Member
iTrader: (5)
 
Joined: Dec 2007
Posts: 12,967
Likes: 389
From: Chicago, IL
Default

Originally Posted by jordjet13
Ill check the plugs and make sure they are good. The engine only has approximently 10,000 miles on it, so I wouldn't think there would be much carbon build-up.
Hmmm. What kind of life did it have before the engine came to you? Was it a crate engine or salvage?
Reply
Old Jun 28, 2011 | 03:58 PM
  #12  
jordjet13's Avatar
Thread Starter
Teching In
 
Joined: Aug 2010
Posts: 7
Likes: 0
Default

I believe it was a crate engine originally. The previous owner drove it hard occasionally, but always took very good care of the car. I checked the plugs today and they seem to all be fine.
Reply
Old Jun 28, 2011 | 06:21 PM
  #13  
98cherrySS's Avatar
TECH Resident
15 Year Member
iTrader: (2)
 
Joined: Jun 2008
Posts: 802
Likes: 59
Default

Leaking injectors... I've seen bad injectors on several late model chevy cars. Symptoms just as you describe. Worth a look...
Reply




All times are GMT -5. The time now is 09:26 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