Fueling & Injection Fuel Pumps | Injectors | Rails | Regulators | Tanks

Fuel Sender Issues

Thread Tools
 
Search this Thread
 
Old Feb 25, 2011 | 07:35 PM
  #1  
Qcon's Avatar
Thread Starter
TECH Apprentice
15 Year Member
Photogenic
Photoriffic
Shutterbug
iTrader: (11)
 
Joined: Oct 2007
Posts: 350
Likes: 12
From: Huntsville, AL
Default Fuel Sender Issues

Hi folks,

My fuel pump recently went out so I replaced it with a new pump assembly including a new sender (via the trap door method). The issue that just popped up is that it shows Full when I fill up, then drops as I drive, like it should. But when it gets to about 3/4F, when I start up the gauge goes all the way back to F and stays there so I can no longer tell how much fuel I have left. When I fill up, it resets and works like normal then fails again at about the same place.

I've pulled the assembly a couple times and can't see anywhere the sender could be snagging, but I could be wrong. Any ideas what might be causing this?

Thanks.

Q
Reply
Old Feb 25, 2011 | 10:51 PM
  #2  
Lonnies Performance's Avatar
LS1TECH Sponsor
iTrader: (16)
 
Joined: Feb 2007
Posts: 2,662
Likes: 2
From: Pittsburgh, PA
Default

The level sensor could be going bad.
You need to test the actual sensor with an ohm meter to see if it is reading properly across its range.
Reply
Old Feb 25, 2011 | 11:18 PM
  #3  
NBM-LS1's Avatar
TECH Resident
iTrader: (7)
 
Joined: Apr 2007
Posts: 954
Likes: 0
From: STL, Mo
Default

As posted before me. I not sure of the pid values of the sending unit but you either are looking for a spike to reference or low voltage/ open in the middle of the sweep.
Reply
Old Feb 26, 2011 | 03:54 PM
  #4  
Qcon's Avatar
Thread Starter
TECH Apprentice
15 Year Member
Photogenic
Photoriffic
Shutterbug
iTrader: (11)
 
Joined: Oct 2007
Posts: 350
Likes: 12
From: Huntsville, AL
Default

I wonder if I bent the sender arm during the install so it looses contact with the connection during the sweep.
Reply




All times are GMT -5. The time now is 12:20 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