Inaccurate Gas Guage - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

Reply
 
 
 
Thread Tools Search this Thread
Old 04-05-2007, 12:32 PM   #1
caseball2051
Guest
 
Posts: n/a
Default Inaccurate Gas Guage

pretty inaccurate. how long should i have once the light goes on to get some gas?
  Reply With Quote
Old 04-05-2007, 12:35 PM   #2
Junior Member
 
Join Date: Mar 2004
Location: Purgatory
Posts: 0
Thanks: 0
Thanked 0 Times in 0 Posts
harofreak00 is on a distinguished road
Default

they really vary on these cars... you dont have as much as you would think... its almost better to track your fuel off the trip meter...
harofreak00 is offline   Reply With Quote
Old 04-05-2007, 12:38 PM   #3
caseball2051
Guest
 
Posts: n/a
Default

thats what ive been doing so far. i put in 20 when i was on E and it got me a little past a half tank. i have driven 17 miles and im already a little ways past half full. and im not driving liek an idiot. but it reads differently evertime i get in the car
  Reply With Quote
Old 04-05-2007, 12:41 PM   #4
Junior Member
 
Join Date: Mar 2004
Location: Purgatory
Posts: 0
Thanks: 0
Thanked 0 Times in 0 Posts
harofreak00 is on a distinguished road
Default

the fuller side of your tank will always move slower than the empty side.. just the way these tanks are...

if you have a 100% full tank, you should be able to drive 100 miles before it gets to the "F", and then probably get to 250 miles with it straight up and down... and than maybe 100 miles until you are emply...

*rough guess*
harofreak00 is offline   Reply With Quote
Old 04-05-2007, 01:07 PM   #5
DINOSAURUS BOOSTUS

Expert Gearhead
 
BillBoost37's Avatar
 
Join Date: Mar 2005
Location: Enfield, CT
Posts: 41,391
Thanks: 0
Thanked 0 Times in 0 Posts
BillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of light
Default

Actually..that'* darn near perfectly accurate.

Our gauges are merely reference in most cases.
BillBoost37 is offline   Reply With Quote
Old 04-05-2007, 01:34 PM   #6
Senior Member
True Car Nut
 
Join Date: Jun 2004
Location: Glendale, AZ
Posts: 3,459
Thanks: 0
Thanked 1 Time in 1 Post
big_news_1 is on a distinguished road
Default

Yes, those were good approximations, Andrew. Depending on the kind of driving you're doing, a safe estimate would be 19-21mpg in the city and 27-29mpg on the highway (depending on how aggressive you are). If your engine is running properly you should be able to go 300 to 350 miles on a tank in the city, and 450+ miles if you're completely on the highway. Even if you figure on the low end of each mileage range and give yourself a one gallon buffer, 19mpg will give you 323 miles in the city and 27mpg will give you 459 miles on the highway.

I go completely by mileages now because my gauge is 100% inaccurate. I'm just holding out to replace the fuel sender until I need a new pump as well.
big_news_1 is offline   Reply With Quote
Old 04-05-2007, 02:36 PM   #7
Senior Member
Posts like a Turbo
 
Join Date: Oct 2006
Location: Kansas City, MO
Posts: 319
Thanks: 0
Thanked 0 Times in 0 Posts
J. Pierpont Finch is on a distinguished road
Default

Wow .... I'm glad to read this post. My '94 SSE does this exact thing.... drove from KC to Minneapollis when I first got the car, left KC with a full tank, and hadn't even crossed the 1/2 tank mark at the Iowa/Minn border. 40 miles later I was at 1/4 tank.

I go almost exclusively by the trip meter now, and never let the gauge get into the hatch marks above 'E'.

I was kicking myself for not haviing the sending unit replaced when the fuel pump went out, but now that I've seen this post, along with the costs for a new sending unit...... well the trip meter is definitely my best friend.
J. Pierpont Finch is offline   Reply With Quote
Old 04-05-2007, 06:19 PM   #8
Senior Member
Posts like a Northstar
 
charliemax's Avatar
 
Join Date: Jan 2006
Location: Valley Forge, PA
Posts: 598
Thanks: 0
Thanked 0 Times in 0 Posts
charliemax is on a distinguished road
Default

Quote:
Originally Posted by harofreak00
the fuller side of your tank will always move slower than the empty side.. just the way these tanks are...
We have 3 different models, 3 different years, 2 different gauges, 2 L36s and an L67. Every one of them behaves exactly as harofreak00 described. From a full tank... when the gauge hits half and you look at your mileage, you think you're going to get 40 mpg. From there it goes fast.

FWIW, I have never run out of gas assuming I have 20-25 miles left when the fuel light goes on. i am probably overcautios, but i have no urge to find out what is at the bottom of my gas tank.
charliemax is offline   Reply With Quote
Old 04-05-2007, 06:24 PM   #9
Senior Member
Certified GM nut
 
Join Date: Mar 2007
Location: Yuma, AZ.
Posts: 1,936
Thanks: 0
Thanked 0 Times in 0 Posts
GXP_Vince is on a distinguished road
Default

Man i get like 230 miles per tank if I am lucky, I do like to race around a bit but I get on the average 15-16mpg city in my 95.
GXP_Vince is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Inaccurate HUD BLACK94SSEi Everything Electrical & Electronic 9 02-01-2007 03:34 PM
Inaccurate gas gage flicksbonnie Everything Electrical & Electronic 8 04-18-2006 09:30 PM
Tachometer inaccurate... rm 1987-1991 3 10-06-2005 02:24 PM
Temperature Guage and Oil Guage stuck!!!!! Str8pimpin 1992-1999 4 10-13-2004 05:38 PM
Inaccurate Boost Gauge on 93 SSEi stever Forced Induction 14 08-21-2004 10:19 PM


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 Off
Refbacks are Off



All times are GMT -4. The time now is 05:51 PM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.