Fuel gauge reads empty with full fuel tank? Here's the fix! - 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.

Closed Thread
 
 
 
Thread Tools Search this Thread
Old 07-14-2002, 11:24 PM   #1
Junior Member
Posts like a V-Tak
Thread Starter
 
Join Date: Jun 2002
Posts: 27
Thanks: 0
Thanked 0 Times in 0 Posts
SSEiguy is on a distinguished road
Default Fuel gauge reads empty with full fuel tank? Here'* the fix!

Hi guys,

I recently got access to a bunch of GM Technical Service Bulletins -- what a great source of info! As I make my way through them, I'll post the fixes to the more common problems here for all to benefit... if you all are interested, that is.

This one fixes a problem that I've seen discussed in the various Bonneville public forums regarding the fuel gauge reading empty when the tank is filled up.

Hope this helps some of you out

- Dean

------------------------------------------------------------------------------------------------


Fuel Gauge Goes to Empty When the Fuel Tank Is Full
Bulletin Number: 93-8-10
Reference Number: 308102
Publish Date: 2/93

Subject:
FUEL GAUGE READS EMPTY WITH FULL FUEL TANK (INSTALL 2000 OHM RESISTOR IN PARALLEL W/FUEL SENDER)

Models Affected:
1992-93 PONTIAC SSE AND SSEI

CONDITION:

Some 1992-93 Pontiac SSE and SSEI vehicles may exhibit a condition where the fuel gauge needle goes to empty when the fuel tank is completely full. If this occurs, the chime sounds and the "CHECK GAUGES" message comes on the display. After a short period of time (30 seconds to 10 minutes of driving), the gauge will recover and begin working again.

CAUSE:

The cause of this condition is a high resistance build-up on the fuel tank sender. The cluster interprets this high resistance (typically 105 ohms) as an electrical fault and sends the fuel gauge needle to empty.

CORRECTION:

The condition may be corrected by installing a 2000 ohm (2 kohm) resistor in parallel with the fuel sender.

DIAGNOSIS AND REPAIR:

Refer to section 8A-81 in the Service Manual for circuit details.

1. If the owner explains that the fuel gauge goes to empty when the fuel tank is filled then begins working after some time, follow steps 2 through 9 below. If the fuel gauge is at empty all of the time, follow the diagnostic procedures in the Service Manual for the cause of the condition.

2. Disconnect the negative battery cable.

3. Remove the lower rear seat cushion.

4. Locate the conduit on the left side of the car and expose the Purple (circuit # 30) and Black/White (circuit # 803) wires. Be careful to get the correct wires since there is also a purple/white wire in the opposite bundle.


The correct purple and black/white wires are in the wiring bundle that has the clear level ride line (ELC) in it.



5. Strip back about 1/2 inch of insulation from each wire as shown in Figure 1. Do not cut the wires.

6. Solder one end of the resistor to the purple wire and the other end to the black/white wire as shown in the figure. A 1/4 or 1/2 watt 2000 ohm resistor is recommended. However, the resistor can be from 1800 ohms (1.8 kohms) to 2200 ohms (2.2 kohms). You can buy this resistor at your local electronics store. Radio Shack normally carries a 2.2 kohm resistor.

7. Tape the connections to prevent any electrical shorts.

8. Put the wires back into the conduit, install the rear seat pad, and connect the battery.

9. Turn the ignition and verify the fuel gauge works correctly.


WARRANTY INFORMATION:

Operation No.:
T5338

Labor Time:
.4 Hr.
SSEiguy is offline  
Old 07-15-2002, 12:45 AM   #2
Junior Member
 
Join Date: Jan 2002
Location: Palo Alto, CA
Posts: 0
Thanks: 0
Thanked 0 Times in 0 Posts
Teuobk is on a distinguished road
Default

Thanks for posting the info!
Teuobk is offline  
Old 07-15-2002, 01:18 AM   #3
Junior Member
 
Join Date: May 2002
Posts: 0
Thanks: 0
Thanked 0 Times in 0 Posts
SSEi95 is on a distinguished road
Default

This kind of stuff would be great info for putting in the "Tech Know-How" section of this site!!!
SSEi95 is offline  
Old 07-15-2002, 01:43 AM   #4
Junior Member
 
Join Date: Jan 2002
Location: Palo Alto, CA
Posts: 0
Thanks: 0
Thanked 0 Times in 0 Posts
Teuobk is on a distinguished road
Default

Quote:
Originally Posted by 95SSEi
This kind of stuff would be great info for putting in the "Tech Know-How" section of this site!!!
I agree. Does anybody know about the copyright implications? (Sorry, can't afford to take legal chances right now)
Teuobk is offline  
Old 07-15-2002, 01:53 AM   #5
Junior Member
Posts like a V-Tak
Thread Starter
 
Join Date: Jun 2002
Posts: 27
Thanks: 0
Thanked 0 Times in 0 Posts
SSEiguy is on a distinguished road
Default

Quote:
Originally Posted by Teuobk
Quote:
Originally Posted by 95SSEi
This kind of stuff would be great info for putting in the "Tech Know-How" section of this site!!!
I agree. Does anybody know about the copyright implications? (Sorry, can't afford to take legal chances right now)
Jeff,

I'll send you an email with information about their copyrights

- Dean
SSEiguy is offline  
Old 07-15-2002, 12:44 PM   #6
Senior Member
Posts like a Corvette
 
Join Date: Jan 2002
Location: Ontario
Posts: 1,253
Thanks: 0
Thanked 0 Times in 0 Posts
Tamara is on a distinguished road
Default

my '95 did that one day during the winter!! And i had just filled it up too. It ended up fixing it self though.

You know, I wonder if that could be the problem i am having with it now?? the jerking and stuff. I thought before it might be something to do witha really dirty fuel filter, and if that thing with the gas tank was caused by a dirty filter then, it must be really dirty now! does that make any sense? I'm getting so fed up with this simmy/shake/jerk thing it does ALL THE TIME now and i have spent so much $$ getting it checked out hmmmmm
Tamara is offline  
Old 07-15-2002, 02:32 PM   #7
Senior Member
Posts like a Corvette
 
Join Date: Jan 2002
Location: Cali
Posts: 1,587
Thanks: 0
Thanked 0 Times in 0 Posts
speedyguy is on a distinguished road
Default

Well my bonny is falling apart and next moth I will have to drop a tone of coin in her. sooo I will also be looking into my shimmy( burned front disks) shakes ( bad modulator, distribution, alt) then I will have the whole thing gone over for bad grounds and electrical shorts. Oh and the heater core is up for replacement. Weeeeeee.

Now for something topic related... my fuel filter acts up when I huck it around corners causing all my gauges to go wacko. Oh and this is a good one the guys who replaced my front rim that fell off gave me the wrong size. LOL totally messed up my alignment. If Iím going about 50mph and huck it into a sharp corner (obviously compensating before hand for the pushing) the gauges go all over the place causing bells to go off. Engine still works and has good pick up still just bouncing gauges. Is this normal? I figure it is because of the system style. Oh and I need new motor mounts.

TY
speedyguy is offline  
Old 07-18-2002, 02:14 AM   #8
Junior Member
 
Join Date: Mar 2002
Location: Yadkinville,NC
Posts: 7
Thanks: 0
Thanked 0 Times in 0 Posts
Corsair is on a distinguished road
Default What about the opposite? Gauge says full when tank is low?

My mechanic said it could be either the guage or the sending unit, located on the fuel pump in the fuel tank. Big $ either way, so, I reset the trip odometer every fillup and when it hits 400 miles, I refill the tank.

Any suggestions?
Corsair is offline  
Old 07-18-2002, 09:17 AM   #9
Senior Member
True Car Nut
 
Join Date: May 2002
Location: Edmonton, AB Canada
Posts: 2,621
Thanks: 0
Thanked 0 Times in 0 Posts
DeathRat is on a distinguished road
Default

That worked for me on my 87! I still do this with my 92 SE too but for seeing how long a tank of gas lasts though. Like it lasts long with my foot on the floor all the time too! :P LOL
DeathRat is offline  
 
 
Closed Thread

Related Topics
Thread Thread Starter Forum Replies Last Post
Gauge reads very low jonfrog82 Forced Induction 7 02-28-2008 11:41 PM
gas gauge reading full tank all the time showshocka2k 1992-1999 12 09-21-2007 07:54 AM
Replaced Fuel Sending Unit - fuel gauge on empty now -fixed gigion 1992-1999 17 09-08-2007 10:44 PM
Gas Gauge Stays ON Empty All The Time sircoarz 1992-1999 3 09-05-2006 07:47 AM
Hesitates when tank is 1/2 empty. Timothy's Buick 1987-1991 10 05-22-2005 03:55 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 08:05 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.