C5 Tech Corvette Tech/Performance: LS1 Corvette Technical Info, Internal Engine, External Engine, Tech Topics, Basic Tech, Maintenance, How to Remove & Replace
Sponsored by:
Sponsored by:

more problems...:( rough idle*video*

Thread Tools
 
Search this Thread
 
Old Jun 11, 2011 | 04:00 PM
  #1  
allen2m4's Avatar
allen2m4
Thread Starter
Pro
 
Joined: Sep 2010
Posts: 655
Likes: 0
From: home= Tiffin,ohio. stationed Abilene TX
Default more problems...:( rough idle*video*

finally fixed the wireing for the shocks and no codes!! took it out today and drove it for about 45 mins brought it home and let it set for about a couple of hours. went back out and got about 2 miles down the road and it started sputtering....then died. i pulled into a parking lot and tried to start again it would start and idle really rough below 600rpms then die when u give it gas. i was able to get it to go up in rpms once but the throttle response was lagging and then it died again...im stumped right now...any help?

video
http://www.youtube.com/watch?v=VXUVNbgVI3I
Reply
Old Jun 11, 2011 | 05:49 PM
  #2  
crainholio's Avatar
crainholio
Pro
15 Year Member
 
Joined: Mar 2004
Posts: 653
Likes: 0
Default

Whip out your fuel pressure gauge (or get one, they're cheap) and get a fuel pressure reading both during the 2-second prime (key to RUN position) and while it's trying to idle.
Reply
Old Jun 11, 2011 | 06:49 PM
  #3  
musicmankeb's Avatar
musicmankeb
Burning Brakes
 
Joined: May 2010
Posts: 968
Likes: 3
From: Coplay PA
Default

Did you ever replace your fuel filter? Could be clogged? Air intake clogged? Check your fuel pressure like someone said already.
Reply
Old Jun 11, 2011 | 07:05 PM
  #4  
sfc rick's Avatar
sfc rick
Le Mans Master
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Nov 2009
Posts: 6,119
Likes: 156
From: Huntington tx
Default

I agree check fuel pump first if it's not reading enough pressure then change fuel filter and check it again. If it hasn't gotten any better...replace pump.

Just my opinion and it's not worth much.
Reply
Old Jun 11, 2011 | 07:31 PM
  #5  
allen2m4's Avatar
allen2m4
Thread Starter
Pro
 
Joined: Sep 2010
Posts: 655
Likes: 0
From: home= Tiffin,ohio. stationed Abilene TX
Default

thanks guys took a reading and its only getting 10psi at the rail

fuel filter is about to go in. hope its that it and not the pump i really dont want to drain a full tank of gas for the 3rd time.

its just weird you can hear the pumps come on...hmmm
Reply
Old Jun 11, 2011 | 08:10 PM
  #6  
lucky131969's Avatar
lucky131969
Tech Contributor
15 Year Member
Active Streak: 30 Days
Community Builder
Liked
 
Joined: Jan 2007
Posts: 19,245
Likes: 1,091
From: Dyer, IN
Default

Originally Posted by allen2m4
thanks guys took a reading and its only getting 10psi at the rail

fuel filter is about to go in. hope its that it and not the pump i really dont want to drain a full tank of gas for the 3rd time.

its just weird you can hear the pumps come on...hmmm
Wait....how about a little troubleshooting? Does the fuel pump run continuously when the engine is running? Have you tried jumpering the relay contact to verify that?
Reply
Old Jun 11, 2011 | 08:38 PM
  #7  
crainholio's Avatar
crainholio
Pro
15 Year Member
 
Joined: Mar 2004
Posts: 653
Likes: 0
Default

Originally Posted by allen2m4
thanks guys took a reading and its only getting 10psi at the rail

fuel filter is about to go in. hope its that it and not the pump i really dont want to drain a full tank of gas for the 3rd time.

its just weird you can hear the pumps come on...hmmm
Third time? Already been in the fuel tank previously?

There have been knock-off copies of Walbro fuel pumps sneaking into the market. If you've installed an aftermarket pump what did you use and where did you get it?
Reply
Old Jun 11, 2011 | 09:06 PM
  #8  
allen2m4's Avatar
allen2m4
Thread Starter
Pro
 
Joined: Sep 2010
Posts: 655
Likes: 0
From: home= Tiffin,ohio. stationed Abilene TX
Default

Originally Posted by crainholio
Third time? Already been in the fuel tank previously?

There have been knock-off copies of Walbro fuel pumps sneaking into the market. If you've installed an aftermarket pump what did you use and where did you get it?
i had a walbro from lingenfelter allready, i added a second walbro from slo boy racing.

i re-wired inside the tank to 12 gauage wire off the pumps to a 10guage.

im about to head over and check the relay and change the fuel filter.
Reply
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

 Michael S. Palmer
story-1

2027 Corvette vs The World: Every Model vs Closest Competitor

 Joe Kucinski
story-2

10 Most Common Corvette Problems of the Last 20 Years!

 Joe Kucinski
story-3

5 MOST and 5 LEAST Popular Corvette Model Years in History!

 Joe Kucinski
story-4

2027 Corvette Buyer's Guide: Everything You Need to Know!

 Joe Kucinski
story-5

10 Things C8 Corvette Owners Hate (But Won't Tell You)

 Joe Kucinski
story-6

10 Best Corvettes Coming to Barrett-Jackson Palm Beach 2026!

 Brett Foote
story-7

Every Corvette Grand Sport Explained! (C2, C4, C6, C7, & C8)

 Joe Kucinski
story-8

Grand Sport & Grand Sport X Launch Alongside All-New 535hp LS6 V8!

 Michael S. Palmer
story-9

5 Reasons Bad Drivers Crash & 5 Ways to Avoid a Costly Mistake!

 Joe Kucinski
Old Jun 11, 2011 | 09:14 PM
  #9  
crainholio's Avatar
crainholio
Pro
15 Year Member
 
Joined: Mar 2004
Posts: 653
Likes: 0
Default

I'm speculating that either the pressure regulator inside the filter failed, or the in-tank plumbing to the dual pumps has sprung a leak.
Reply
Old Jun 13, 2011 | 07:43 PM
  #10  
musicmankeb's Avatar
musicmankeb
Burning Brakes
 
Joined: May 2010
Posts: 968
Likes: 3
From: Coplay PA
Default

So what happened ? Did you fix your car ?
Reply
Old Jun 14, 2011 | 12:00 AM
  #11  
allen2m4's Avatar
allen2m4
Thread Starter
Pro
 
Joined: Sep 2010
Posts: 655
Likes: 0
From: home= Tiffin,ohio. stationed Abilene TX
Default

Originally Posted by musicmankeb
So what happened ? Did you fix your car ?
found the problem, im waiting for my part to come in. what happened was the fuel line that was connected to the "y" fitting cam/broke off. so one pump was just spraying fuel and the other was pushing fuel out the hole with a little making it to the rail...lol

i would also like to add i had to drain 13 gallons of fuel. i saved most of it maybe lost a gallon or less
Reply

Get notified of new replies

To more problems...:( rough idle*video*





All times are GMT -4. The time now is 04:29 PM.

story-0
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

Slideshow: Should you buy a 2020-2026 Corvette or wait for 2027?

By Michael S. Palmer | 2026-04-22 10:08:58


VIEW MORE
story-1
2027 Corvette vs The World: Every Model vs Closest Competitor

Slideshow: 2027 Corvette lineup vs the world.

By Joe Kucinski | 2026-04-20 17:58:41


VIEW MORE
story-2
10 Most Common Corvette Problems of the Last 20 Years!

Slideshow: 10 major Corvette problems from the last 20 years.

By Joe Kucinski | 2026-04-14 16:37:05


VIEW MORE
story-3
5 MOST and 5 LEAST Popular Corvette Model Years in History!

Slideshow: 5 most and least popular Corvette model years.

By Joe Kucinski | 2026-04-08 13:25:01


VIEW MORE
story-4
2027 Corvette Buyer's Guide: Everything You Need to Know!

Slideshow: 2027 Corvette buyer's guide

By Joe Kucinski | 2026-04-17 16:41:08


VIEW MORE
story-5
10 Things C8 Corvette Owners Hate (But Won't Tell You)

Slideshow: 10 things C8 Corvette owners hate, but won't tell you.

By Joe Kucinski | 2026-04-01 18:36:07


VIEW MORE
story-6
10 Best Corvettes Coming to Barrett-Jackson Palm Beach 2026!

Slideshow: Should you add one of these incredible Corvettes to your garage?

By Brett Foote | 2026-04-01 18:14:05


VIEW MORE
story-7
Every Corvette Grand Sport Explained! (C2, C4, C6, C7, & C8)

Slideshow: Every Corvette Grand Sport explained

By Joe Kucinski | 2026-03-26 07:13:44


VIEW MORE
story-8
Grand Sport & Grand Sport X Launch Alongside All-New 535hp LS6 V8!

Slideshow: Breaking down the 2027 Grand Sport, Grand Sport X, Stingray, and LS6 V8.

By Michael S. Palmer | 2026-03-26 13:48:45


VIEW MORE
story-9
5 Reasons Bad Drivers Crash & 5 Ways to Avoid a Costly Mistake!

Slideshow: 5 reasons bad drivers crash sports cars & 5 ways to avoid a costly shame!

By Joe Kucinski | 2026-03-25 16:32:55


VIEW MORE