Go Back   LS1TECH > LS1-LS2-LS3-LS6-LS7 PERFORMANCE > Conversions & Hybrids
Sign in using an external account
Register Forgot Password?
Search

Conversions & Hybrids
LSX Engines in Non-LSX Vehicles
Sponsored by
Don Hardy Race Cars

Welcome to LS1Tech.com!
Welcome to LS1Tech.com.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, at no cost, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, join LS1Tech.com today!


Reply
 
Thread Tools Search this Thread
Old 12-30-2013, 07:00 PM   #1
Registered User
Garage is empty, add now
 
Trader Rating: 0
Join Date: Dec 2013
Posts: 2
Default 6.0 liter spits and sputters

I hope someone out there can help me. I have a 2002 6 liter in a '72 Chevy truck that has ran fine for 2 years. Now every once in a while driving down the road, I will lose all power and the truck will not rev up. It just spits and sputters and tries to die when I give it gas. Any ideas or suggestions will be very much appreciated.
Tom mcd is offline   Reply With Quote
Old 12-31-2013, 12:48 AM   #2
Launching!
Garage is empty, add now
 
Trader Rating: 3
Join Date: Nov 2012
Posts: 289
Default

Could be a number of things but i would lean to a fuel filter needing to be replaced. Possible clogged injectors or dirty maf sensor. Just a few possibilitys but i bet fuel filter
__________________
2000 black camaro ss m6
slp lid, tsp 1 7/8 lt and tsp ory,ls6 intake
dhctss is offline   Reply With Quote
Old 12-31-2013, 07:19 PM   #3
Registered User
Garage is empty, add now
 
Trader Rating: 0
Join Date: Dec 2013
Posts: 2
Default

Thanks but it only does it every once in awhile and you let it set and it starts working just fine. The shop that made the harnness told me it was my tac module but i just put a new one on and after two days does the same thing. I put on a new maf sensor already to.
Tom mcd is offline   Reply With Quote
Old 01-02-2014, 07:18 AM   #4
TECH Enthusiast
Garage is empty, add now
 
Trader Rating: 0
Join Date: Aug 2005
Location: warwick,ny
Posts: 629
Default

Check your fuel pressure.
gagliano7 is offline   Reply With Quote
Old 01-02-2014, 10:02 AM   #5
TECH Addict
Garage is empty, add now
 
ls1nova71's Avatar
 
Trader Rating: 2
Join Date: Jan 2008
Location: Independence Mo
Posts: 2,244
Default

There's no way this can be diagnosed over the internet, just way too many possibilities. That said, it does sound like a fuel issue though, and as others have said, changing the fuel filter would be a good place to start. If you could check the fuel pressure, that would help, but to be honest, you would have to check it while it's messing up. I would check your fuel pump wiring and all your grounds. Is the fuel pump in the tank or external? Also make sure your fuses have good connections and are not loose or corroded or anything. Have you checked it for any codes?
__________________
1971 Nova w/98 Camaro Z28 LS1, 1933 Ford w/01 Camaro B4C LS1, 5.3 Family Truckster

My '72 Chevy truck build, http://www.ls1tech.com/forums/conver...6-0-4l80e.html(Sold)
1971 Nova LS1 Hot Rod feature October 2001 http://www.hotrod.com/featuredvehicl...ova/index.html
1971 Chevy truck build, http://ls1tech.com/forums/conversion...71-c-10-a.html
ls1nova71 is offline   Reply With Quote
Old 01-02-2014, 12:44 PM   #6
TECH Addict
1970 Datsun 240z
 
Pop N Wood's Avatar
 
Trader Rating: 1
Join Date: May 2006
Posts: 2,719
Default

Hook up a scanner so you can record what is happening when driving. Like said above could be anything, like a MAP sensor going out, EGR valve, loss of crank sensor signal, loss of fuel or too much fuel (sticky injector). The problem might be outside anything the computer measures, but it is a good place to start ruling out possible issues.

Could also be electrical, like you are loosing power to the PCM, injectors, coils, etc due to a power path or bad ground. Might be a chaffed wire shorting to ground. Believe it or not it could even be dirty battery posts.

My Tacoma truck is doing this right now. It's not throwing any error codes and has good fuel pressure and spark. I'm leaning toward a the timing chain or a valve going bad. total pisser.

Could be anything.
Pop N Wood is offline   Reply With Quote
Old 01-02-2014, 12:48 PM   #7
On The Tree
Garage is empty, add now
 
Fahrenschnell's Avatar
 
Trader Rating: 1
Join Date: Apr 2007
Location: Tampa, FL
Posts: 197
Default

Check for wire chafing on the power lead on the starter....had this happen to me and the power lead had started intermittently shorting.....same symptoms
__________________
No officer i'm not tired, I had the cruise control set at 100.

'95 Formula M6- Sold
'64 Malibu SS DD- LQ4 TH400 and a 12 bolt....Stupid 918's strike again....RIP LQ4...5.3 in and running strong.
203 mph- '98 Z28 Land Speed Race Car- 370, S480, A2W, Jericho 4-Speed, and a 9" with a 2.50 gear......1029 RWHP
'68 Opel Kadett....Soon to be LS powered....1400 lbs of fury
Fahrenschnell is offline   Reply With Quote
Old 01-02-2014, 12:48 PM
LS1Tech
Pontiac Firebird




Paid Advertisement
Reply

Tags
60, chafing, dies, ford, spits, sputters, wire


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
spits and sputters out of boost but only when its 95* plus outside. necrocannibal Forced Induction 0 08-24-2014 07:00 AM
5.3 Swap throwing crazy Ignition coil codes. windsma General Maintenance & Repairs 3 07-21-2014 09:27 AM
Brand new motor not running zrmurcer Generation III Internal Engine 12 07-17-2013 12:47 AM
5k rpm studder minrider LT1-LT4 Modifications 9 06-08-2013 09:59 PM
HELP!! my 1999 camaro antboy89 Chevrolet Camaro 1967-2002 19 12-11-2012 05:04 PM



All times are GMT -5. The time now is 04:50 AM.


Powered by vBulletin® Version 3.7.4
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Advertising - Terms of Service - Privacy Statement - JOBS
Emails & Contact Details