LT1-LT4 Modifications 1993-97 Gen II Small Block V8

gauges suck

Thread Tools
 
Search this Thread
 
Old May 20, 2007 | 02:37 PM
  #1  
04gtoBMXracer's Avatar
Thread Starter
TECH Resident
iTrader: (26)
 
Joined: Oct 2005
Posts: 783
Likes: 0
From: Albuquerque nm
Default gauges suck

okay, i bought a 1995 t top z28 2 days ago and i thought the gauges were a little off, well just the spedo anyway. well i put like 10 bucks yesterday (gas)cause i still had like 3/4 gas, well i go to pick up my girl from work downtown at 1am and the car dies and wont fire back up. i've owned a 1994 z28 since i was 18 and have replaced the opti-junk 3 times. so im pissed off in bed thinking i was gonna have to tear the whole car apart this morning and change it out, then i cant remember if i've seen the gas gauge move for the past day. well i put some gas and it started right up, im happy but at the same time i feel like a jackass but at least i dont have to change the opti!!! yet anyway.....
Reply
Old May 20, 2007 | 02:59 PM
  #2  
the_merv's Avatar
11 Second Club
Veteran: Air Force
20 Year Member
Loved
Community Favorite
iTrader: (88)
 
Joined: Mar 2006
Posts: 21,019
Likes: 893
From: The Beach...
Default

The Fuel Gauge in these things is always off, I have never seen one that was correct..
Reply
Old May 20, 2007 | 03:03 PM
  #3  
LMz28's Avatar
Launching!
iTrader: (2)
 
Joined: Jun 2006
Posts: 278
Likes: 0
From: fresno, ca
Default

mine sucks *** too. moves real slow up until the 1/2 way mark. then it just plummets to E right after that. caught me by suprise the first few weeks i had the car.
Reply
Old May 20, 2007 | 03:10 PM
  #4  
britdog's Avatar
Teching In
iTrader: (1)
 
Joined: May 2006
Posts: 29
Likes: 0
From: Lake George, NY
Default

Same thing here. First 1/2 of the tank, I feel like I'm getting great mileage, then it just dives after that and brings me back to reality that this is NOT a practical car. I just make sure I fill it up before I hit the 200 mile mark on that tank.
Reply
Old May 20, 2007 | 04:12 PM
  #5  
donkey mule's Avatar
TECH Resident
 
Joined: Feb 2006
Posts: 934
Likes: 0
From: Panama City Florida
Default

Yeah , This about happened to me when I first got my TA. I later found out that the gas tank is kind of v shaped so there is much more gas in the top half of the tank then the lower half.
Reply
Old May 20, 2007 | 04:56 PM
  #6  
roadhog_113's Avatar
TECH Regular
 
Joined: Feb 2006
Posts: 434
Likes: 0
From: Winnipeg, Mb
Default

ya me too i just bought mine and drove it home to winnipeg from cincinnatti. Almost didn't make it to the gas station in grand forks because after 1/2 it started to drop pretty quick. Car wasn't bad on fuel though 415rwhp and i still got around 23 miles/gal. on the m6 : )
Reply
Old May 20, 2007 | 06:07 PM
  #7  
Ralls's Avatar
TECH Fanatic
15 Year Member
iTrader: (32)
 
Joined: Oct 2005
Posts: 1,687
Likes: 0
From: Fairfax, Virginia
Default

Since you all are on the topic of gas gauges, does anyone's needle sway side to side when turning? Like it can go from half full to empty with a hard right turn. I'm not sure if it is normal on older cars, or my sending unit needs replaced.
Reply
Old May 20, 2007 | 06:14 PM
  #8  
Hot94Z28's Avatar
TECH Fanatic
 
Joined: May 2006
Posts: 1,230
Likes: 0
From: Lexington,MO
Default

Originally Posted by Ralls
Since you all are on the topic of gas gauges, does anyone's needle sway side to side when turning? Like it can go from half full to empty with a hard right turn. I'm not sure if it is normal on older cars, or my sending unit needs replaced.

Mine does the same thing man.
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 May 20, 2007 | 06:42 PM
  #9  
The LT1 That Could's Avatar
12 Second Club
iTrader: (3)
 
Joined: Dec 2002
Posts: 1,383
Likes: 1
From: Lubbock, TX
Default

just the fuel shifting around in the tank causing the sender to read incorrectly...same thing under hard accel/braking.
Reply
Old May 20, 2007 | 06:59 PM
  #10  
TwoFast4Lv's Avatar
10 Second Club
20 Year Member
Photogenic
iTrader: (8)
 
Joined: Nov 2001
Posts: 10,023
Likes: 6
From: LT1 land...the "409" of the 90s!
Default

Let me get this right.

You put like 2 1/2 gallons in your car and expected to go more then 50 miles?

When ever I get a new car I am carefull and make sure I do things like change all the fluids and FILL the tank full to get an idea of what it will do and I am carefull to run it down lower and lower till I get to where I am filling it with what the book say it takes.

I got to tell you If I am only putting 10 bucks in a tank that takes $56 to fill I am not expecting to go far
Reply
Old May 20, 2007 | 07:58 PM
  #11  
azmarkus's Avatar
On The Tree
 
Joined: Jul 2005
Posts: 187
Likes: 0
From: Gilbert, AZ
Default

The 11th commandment of LT1 ownership: when thou reachest 1/4 tank, thou shalt proceed most expeditiously to nearest yon purveyor of petrol.
Reply
Old May 20, 2007 | 08:11 PM
  #12  
koolaid_kid's Avatar
TECH Junkie
iTrader: (21)
 
Joined: Jul 2005
Posts: 3,023
Likes: 1
From: Indianapolis
Default

I have owned my car since new, and I have never trusted the fuel estimator. I use the odometer exclusively. I don't think I have ever seen the 'needs gas" light, which I think it has.
Reply
Old May 20, 2007 | 08:13 PM
  #13  
NovaTodd's Avatar
Staging Lane
 
Joined: Nov 2006
Posts: 75
Likes: 0
Default

Originally Posted by azmarkus
The 11th commandment of LT1 ownership: when thou reachest 1/4 tank, thou shalt proceed most expeditiously to nearest yon purveyor of petrol.

Make that 1/2 tank
Reply
Old May 20, 2007 | 08:20 PM
  #14  
97LT1's Avatar
TECH Fanatic
20 Year Member
iTrader: (3)
 
Joined: Sep 2004
Posts: 1,417
Likes: 0
From: Clear lake TX (From LaPorte)
Default

I had my fuel tank gauge act kooky on me one time. I had not filled up to full capacity for several weeks, and when i did the gauge went way past full, and stuck there. It finally came back down to where it needed to be several trips later.
Reply
Old May 20, 2007 | 10:26 PM
  #15  
the_merv's Avatar
11 Second Club
Veteran: Air Force
20 Year Member
Loved
Community Favorite
iTrader: (88)
 
Joined: Mar 2006
Posts: 21,019
Likes: 893
From: The Beach...
Default

Originally Posted by azmarkus
The 11th commandment of LT1 ownership: when thou reachest 1/4 tank, thou shalt proceed most expeditiously to nearest yon purveyor of petrol.
Edit: When thou reachest 1/4 tank... thou shalt realizeth that 1/8 tank remaineth
Reply
Old May 20, 2007 | 10:51 PM
  #16  
NovaTodd's Avatar
Staging Lane
 
Joined: Nov 2006
Posts: 75
Likes: 0
Default

Originally Posted by 97LT1
I had my fuel tank gauge act kooky on me one time. I had not filled up to full capacity for several weeks, and when i did the gauge went way past full, and stuck there. It finally came back down to where it needed to be several trips later.

Mine does this and has as long as I have had the car. Since I don't drive it everday, I just live with it (and fill-up after about 100 or so miles)
Reply
Old May 21, 2007 | 09:21 AM
  #17  
birdmaro's Avatar
12 Second Club
iTrader: (45)
 
Joined: Dec 2006
Posts: 526
Likes: 1
From: O'Hare
Default

fuel gauges in general seem to suck. on my 01 3.8 i get great mileage to about 3/4 full...then the needle moves quicker and quicker. takes the same amount of time to go from 3/4 to empty as it does for full to 3/4

i have autometer gauges in my 79...when the needle hits 3/4 of a tank...i need to fill up 9.5 gallons of gas lol. and this is in a 21 gallon tank
Reply
Old May 21, 2007 | 10:42 AM
  #18  
dhdenney's Avatar
TECH Veteran
iTrader: (53)
 
Joined: Feb 2004
Posts: 4,433
Likes: 0
From: Monticello, Kentucky
Default

Can't top my Z. When it gets to 3/4 full it's empty. First time I filled it up, I thought the needle was gonna break off it was pegged so hard. I ask a mechanic to take a look at it while he was replacing the power window motor and door lock actuator (didn't look like a job for me). He said looked like someone broke the sender while they were putting the pump in it. Unfortunately the sender does not have its own PN. After I installed my pump in the T/A, you were out at 1/4 tank so the senders must be ultra touchy.
Reply
Old May 21, 2007 | 10:59 AM
  #19  
ggk's Avatar
ggk
Launching!
iTrader: (1)
 
Joined: May 2006
Posts: 291
Likes: 0
From: Solon, Ohio
Default

yeah my forumla is bad if i get on it goes from like 1/2 tank to full almost.
also 5 bucks gives me 1/4 tank and one time i put like 30 in it and it was like 1/2 tank past full and it was nowhere near full.

also my temp gauge does not work but the fans kick on. anyone know why that is?
also my trip meter is broken. should i go get a new cluster?
Reply
Old May 21, 2007 | 11:12 AM
  #20  
dhdenney's Avatar
TECH Veteran
iTrader: (53)
 
Joined: Feb 2004
Posts: 4,433
Likes: 0
From: Monticello, Kentucky
Default

Originally Posted by ggk
yeah my forumla is bad if i get on it goes from like 1/2 tank to full almost.
also 5 bucks gives me 1/4 tank and one time i put like 30 in it and it was like 1/2 tank past full and it was nowhere near full.

also my temp gauge does not work but the fans kick on. anyone know why that is?
also my trip meter is broken. should i go get a new cluster?
Your temp gauge in the car runs off the sensor in the head and the fans work off the sensor in the water pump. Two different things there, but I recommend getting the gauge working. Look between 1 and 3 header tubes or manifold whatever you got and you'll see the one wire sensor. They're easy to screw up. Trip meter is broken but the ODO is fine? Does sound like problem is in the cluster.
Reply



All times are GMT -5. The time now is 04:43 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