Results 1 to 12 of 12

Excessive Fuel Consumption

This is a discussion on Excessive Fuel Consumption within the General Help forums, part of the LSx Technical Help Section category; Ok, I've been in another forum but I wanted 2 get some input here as well. It's been quite a ...

  1. #1
    Junior Member
    Join Date
    Aug 2010
    Location
    Parkville, Maryland
    Posts
    24
    2002 Camaro SS

    Excessive Fuel Consumption

    Ok, I've been in another forum but I wanted 2 get some input here as well. It's been quite a long topic so here's the gist. 02 Camaro ss w poor gas mileage. Changed upstreams, cleaned maf. Found out yesterday after pulling pigtail for sending unit, its not registering 240ohms. With full tank, AND I DO MEAN FULL TANK, gauge will not read past just below full and 224ohms.


    Thank you.

  2. #2
    Life in the Fast lane sunsetorangess's Avatar
    Join Date
    Aug 2005
    Location
    Bragg NC
    Posts
    2,835

    Met. Sunset Orange
    01 SS

    Whats your MPG? Do you have excessive fuel consumption or is your guage not reading correctly? How many gallons are you putting in the car to "fill" it up? On a full tank If your checking for Ohms the value should be between 227 & 250.
    J
    2001 SS, Its not the car its the Driver that matters....

  3. #3
    Junior Member
    Join Date
    Aug 2010
    Location
    Parkville, Maryland
    Posts
    24
    2002 Camaro SS

    When my check gauges light comes on, it takes 11gal to fill up. With full tank, I read 224ohms. The gauge will read diff depending on which way the car faces in my driveway. 1 way, it won't even read full. The other way, it reads over full. That's like 1/8 tank variation. I could c this if the tank was 1/2 full, but not completely full.

  4. #4
    Electrical Engineer KMdef9's Avatar
    Join Date
    Jul 2009
    Location
    North of the Motorcity
    Posts
    2,611

    Custom Swirly Black
    2001 WS6 M6

    So it's a guage problem?

  5. #5
    Super Moderator
    pajeff02's Avatar
    Join Date
    Feb 2009
    Location
    Mansfield, PA
    Posts
    21,567

    Black & Blue
    '02 WS.6 / '07 Suburban

    Sulfer deposits on the fuel level sending units can cause issues. It has been recommened in the past to add Chevron Techron Fuel System Cleaner to your tank. If I recall, the instructions call for about 12 gallons of fuel in the tank and then run it until about gone. It may take more than one treatment to fully remedy the problem... if that is the issue. Compared to pulling the sending unit out of the tank, I would at least attempt this.

  6. #6
    Junior Member
    Join Date
    Aug 2010
    Location
    Parkville, Maryland
    Posts
    24
    2002 Camaro SS

    What about Seafoam

  7. #7
    Super Moderator
    pajeff02's Avatar
    Join Date
    Feb 2009
    Location
    Mansfield, PA
    Posts
    21,567

    Black & Blue
    '02 WS.6 / '07 Suburban

    The only fuel system cleaner that I know of that is designed to remove the sulfer deposits is Chevron Techron. I believe it even states so in the product literature. Seafoam is basically a high power solvent -- it's like dumping laquer thinner in your engine.

  8. #8
    Moderator Firebirdjones's Avatar
    Join Date
    May 2006
    Location
    Arizona
    Posts
    12,552
    I had the same fuel gauge issues on my wifes car. I used Lucas Oil fuel treatment and it cured the problem.
    I like the Lucas fuel treatments because it doesn't have those harsh chemicals found in some of the other brands and also acts as a valvetrain lubricant. I just don't care to run stuff with the harsh solvents through my engines.

    It took about 4 fillups with Lucas Fuel treatments and the fuel gauge has worked flawless ever since. I make it a regular practice to run Lucas fuel treatment through all the cars about every 4-5 fillups just to keep things running clean and lubricate the valvetrain.

  9. #9
    Junior Member
    Join Date
    Aug 2010
    Location
    Parkville, Maryland
    Posts
    24
    2002 Camaro SS

    I'll give that a shot. Thanks to all for the help. This is off topic, but don't the 4th gen SS's have a plaque on the passenger strut tower that has the production number on it? I KNOW when I 1st looked at this car it had a plaque on the strut tower. Now there Is just a hole where a screw or rivet is supposed to be. I think the guy removed the plaque as a momento. Y I have no idea, but I know I saw 1. The door sticker has the wu8 code and I have a letter given to people who buy SS's from GM, so I'm sure Its an SS, but if its supposed to have that plaque, I want it.

  10. #10
    Moderator Cutlass's Avatar
    Join Date
    Apr 2008
    Location
    Madison, WI
    Posts
    6,996

    1999 Formula WS6 M6-sold
    2001 Silverado Z71

    Quote Originally Posted by 02 CamaroSS View Post
    When my check gauges light comes on, it takes 11gal to fill up.
    Hmmm...I think my car takes about 13 gallons to fill up when it some wheres around 1/4 tank or a little less. And that before the "Check Gauges" light comes on. Maybe your gas tank isn't getting completely full???

  11. #11
    Junior Member
    Join Date
    Aug 2010
    Location
    Parkville, Maryland
    Posts
    24
    2002 Camaro SS

    The tank is definitely getting full because I tried 2 add some and it poured out of the filler neck.

  12. #12
    Moderator Cutlass's Avatar
    Join Date
    Apr 2008
    Location
    Madison, WI
    Posts
    6,996

    1999 Formula WS6 M6-sold
    2001 Silverado Z71

    There are other possibilities for fuel spitback other than a full tank. If the tank can't vent air out properly while you're filling, the gas can spitback at you before its full. These cars come with a 16.8 gallon gas tank and if you're only able to put 11 gallons in it when the check gauges light comes on (roughly 1/16th tank full), then there might be a problem there.
    If you're able to disconnect the EVAP vent hose, then try to fill the tank, and it fills up better then that'll give us a direction to go.

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. Replies: 44
    Last Post: 12-15-2014, 11:44 AM
  2. Question: Oil Consumption
    By Dr.Crash in forum General Help
    Replies: 12
    Last Post: 09-08-2009, 06:31 PM
  3. Excessive?
    By Sarge in forum Almost Anything Goes
    Replies: 68
    Last Post: 06-17-2009, 09:01 AM
  4. Excessive Belt problems? Check this out..
    By AKIRA in forum General Help
    Replies: 5
    Last Post: 11-21-2006, 07:28 PM
  5. Excessive Front Wheel Movement
    By T/Aboo in forum Suspension and Handling
    Replies: 3
    Last Post: 11-15-2006, 06:13 AM

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •