Fuel guage question - 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 10-19-2006, 09:17 AM   #1
Senior Member
True Car Nut
Thread Starter
 
tallbump's Avatar
 
Join Date: Jun 2005
Location: Erie Pennsylvania
Posts: 3,808
Thanks: 0
Thanked 0 Times in 0 Posts
tallbump is on a distinguished road
Default Fuel guage question

What'* up with my fuel guage? It can read from about a half of a tank to less than a quarter and then back, or somewhere inbetween in a matter of seconds. It drives me nuts. Which is accurate? Is is most accurate at an idle, or while driving? I love my car bt this annoys the crap out of me.
tallbump is offline   Reply With Quote
Old 10-19-2006, 09:51 AM   #2
Junior Member
 
Join Date: Mar 2003
Location: Purgatory
Posts: 0
Thanks: 0
Thanked 0 Times in 0 Posts
vital49 is on a distinguished road
Default

Your fuel level sensor is failing. Search on "fuel level sensor". It'* a common failure point on our cars.
vital49 is offline   Reply With Quote
Old 10-19-2006, 10:14 AM   #3
Senior Member
True Car Nut
 
Join Date: Feb 2006
Location: Melrose
Posts: 4,596
Thanks: 0
Thanked 0 Times in 0 Posts
BLACK94SSEi is on a distinguished road
Default

Well before you go the Fuel level sensor route, let your car sit at idle, because I believe thats the way the tank float is. It varies while driving since the fuel moves in the tank and the float does the same.

Does your gas gauge go up when accelerating, than down when stopping? if so, thats normal for the gauge to do that.

If while your sitting still and idling the gauge bounces, then it Might be the fuel level sensor.
BLACK94SSEi is offline   Reply With Quote
Old 10-19-2006, 10:19 AM   #4
Senior Member
True Car Nut
 
Join Date: Oct 2005
Location: Central Florida
Posts: 7,030
Thanks: 0
Thanked 0 Times in 0 Posts
lash is on a distinguished road
Default

Quote:
Originally Posted by vital49
Your fuel level sensor is failing. Search on "fuel level sensor". It'* a common failure point on our cars.
X2

Mark has probably hit this one one the head.
lash is offline   Reply With Quote
Old 10-21-2006, 03:36 AM   #5
Member
Posts like a V-Tak
 
Join Date: Sep 2006
Location: Taylor, MI
Posts: 31
Thanks: 0
Thanked 0 Times in 0 Posts
naMyegooBehT is on a distinguished road
Default

Sometimes it could be the hanger(sending unit) inside the gas tank.. That'* what mine was.. My gas gauge wasn't reading at all though.. Only when it hit empty the gas guage would shoot to empty, other than that it would always read full. Once I replaced my float in the gas tank it worked perfectly. I actually replaced the whole unit. The thing the fuel pump is on.
naMyegooBehT is offline   Reply With Quote
Old 10-21-2006, 08:47 AM   #6
Senior Member
True Car Nut
Thread Starter
 
tallbump's Avatar
 
Join Date: Jun 2005
Location: Erie Pennsylvania
Posts: 3,808
Thanks: 0
Thanked 0 Times in 0 Posts
tallbump is on a distinguished road
Default

Yeah, it just fluctuates while drivig. It seems to "settle" while driving. I have just never seen a car vary so much while driving. I mean you see more than a 1/4 tank differnece most times. I really don't like that.
tallbump is offline   Reply With Quote
Old 10-21-2006, 09:37 AM   #7
Junior Member
 
Join Date: Mar 2003
Location: Purgatory
Posts: 0
Thanks: 0
Thanked 0 Times in 0 Posts
vital49 is on a distinguished road
Default

Quote:
Originally Posted by naMyegooBehT
Sometimes it could be the hanger(sending unit) inside the gas tank.. That'* what mine was.. My gas gauge wasn't reading at all though.. Only when it hit empty the gas guage would shoot to empty, other than that it would always read full. Once I replaced my float in the gas tank it worked perfectly. I actually replaced the whole unit. The thing the fuel pump is on.
That'* exactly what I said too.

The new GM senders are about $250.
vital49 is offline   Reply With Quote
Old 10-23-2006, 09:54 AM   #8
Senior Member
True Car Nut
 
Join Date: Oct 2005
Location: Central Florida
Posts: 7,030
Thanks: 0
Thanked 0 Times in 0 Posts
lash is on a distinguished road
Default

Tall, you are going to want to replace that sending unit. A common scenario is rusting up in that area. Left to go too long and you can develop a fuel leak. Been there and done that. Repair it while you have the time to do it under your own terms.
lash is offline   Reply With Quote
Old 10-23-2006, 04:40 PM   #9
Senior Member
True Car Nut
Thread Starter
 
tallbump's Avatar
 
Join Date: Jun 2005
Location: Erie Pennsylvania
Posts: 3,808
Thanks: 0
Thanked 0 Times in 0 Posts
tallbump is on a distinguished road
Default

So here'* my next question...Is the sending unit part of or seperate from the fuel pump? Cuz I just put a new pump on like 3 months ago and just replaced the fule lines like 2--3 weeks ago. Getting kinda sick of fixin stuff.....
tallbump is offline   Reply With Quote
Old 10-23-2006, 04:44 PM   #10
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

Separate
BillBoost37 is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Temp. Guage Question - Probably a n00b question... :D ten_gigahertz 2000-2005 15 03-11-2006 10:07 AM
Temperature Guage and Oil Guage stuck!!!!! Str8pimpin 1992-1999 4 10-13-2004 05:38 PM
defective fuel guage... unclebubba 1992-1999 25 09-14-2003 10:53 PM
Fuel Guage sensor???? bonneville1992 1992-1999 1 08-15-2003 02:27 PM
Fuel Pressure Test Guage Fitting Location? LarryCigar 1992-1999 10 05-21-2003 03:54 AM


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 03:38 AM.


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.