1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

Sensitive Oil Light

Discussion in '80-Series Tech' started by AZ_Man, Nov 17, 2003.

  1. AZ_Man

    AZ_Man

    Messages:
    12
    Likes Received:
    0
    Joined:
    Jul 4, 2003
    Location:
    Tempe, AZ
    Does anyone have any idea why my oil light would illuminate when the dipstick is clearly half-way between the high and low marks (yes, I wipe the dip-stick with a clean rag before measuring)? The light seems to be somewhat intermittant, but tends to turn on about half a minute after I get to highway speeds then turns off about a minute later. Could there be blockages or a weak oil pump causing the problem? ???
     
  2. cruiserdan

    cruiserdan SupportingVendor Emeritus Moderator

    Messages:
    21,582
    Likes Received:
    4,696
    Joined:
    Mar 27, 2003
    Location:
    Surrounded by Cruisers from all over the world
    Possibly the float on the sensor is hanging up.
    This assumes you have a 1FZFE engine as you did not state your vehicle specifics.
    D-
     
  3. landandsea

    landandsea

    Messages:
    299
    Likes Received:
    0
    Joined:
    May 31, 2003
    My oil light has come on twice. Both times at the same exact spot on the same exact road - several days apart.

    It was raining each time.

    Radio waves? Wet radio waves? Go figure.

    Ed

    BTW... Oil level was full
     
  4. DanKunz

    DanKunz SILVER Star

    Messages:
    9,409
    Media:
    2
    Albums:
    1
    Likes Received:
    869
    Joined:
    Feb 7, 2002
    Location:
    Woodstock, GA
  5. sjpitts

    sjpitts

    Messages:
    733
    Likes Received:
    7
    Joined:
    Jun 9, 2003
    Location:
    Mesa, Arizona
    We had the same problem. The light would go on for a few seconds each morning. Typically after we had driven a few hundred feet. Then it would go off a few seconds later.

    Don't know what the problem was. Some have theorized the lack of or malfunctioning anti-drain back valve on the oil filter. Problem is, that would result in more oil in the plan, not less.

    I personally think the sensor just becomes over sensitive. So if it goes on, I check the level and maybe add a half a quart. That is usually enough to make the problem go away.

    Also, are you sure you are reading the dipstick right?-- sometimes I look at the dipstick and am not sure where the level really is. Drove me nuts the first time I had the problem.

    Jared
     
  6. landtoy80

    landtoy80

    Messages:
    5,790
    Likes Received:
    309
    Joined:
    Mar 13, 2003
    Location:
    North Front Range, CO
    Remove the sensor and clean it up. Had the problem on the Toy Previa and the shaft that the float rids on got gunked up. Cleaned it up with fine sand paper and the light didn't come on till it was low on oil.
     
  7. drexx

    drexx

    Messages:
    540
    Likes Received:
    5
    Joined:
    Sep 8, 2003
    17Nov2003 (UTC -7)

    Hey... I think we have the same issue here, only mine is with a 1HD-FT (turbo-diesel). My problem, I think, went away today when I topped off with 3/4 qt of oil. And as landtoy80 suggested, I'm gonna check and clean the float on the sensor soon.

    ...I'm gonna update the other thread I started with same symptoms.
     
  8. concretejungle

    concretejungle SILVER Star

    Messages:
    9,428
    Likes Received:
    658
    Joined:
    Oct 27, 2003
    Location:
    North Cadillac
    My 95' us spec did the same thing. I think in the owners manual it calls for like 7.6 quarts of oil during oil changes. After oil changes my light would come on and back off again driving around. Started putting 8 quarts in and the light stopped coming on. Hope that helps :) :beer:
     
  9. Jim_Chow

    Jim_Chow

    Messages:
    2,479
    Likes Received:
    5
    Joined:
    Apr 28, 2003
    Location:
    Turquoise Trail, N NM
    [quote author=concretejungle link=board=2;threadid=7680;start=msg64641#msg64641 date=1069169424]
    My 95' us spec did the same thing. I think in the owners manual it calls for like 7.6 quarts of oil during oil changes. After oil changes my light would come on and back off again driving around. Started putting 8 quarts in and the light stopped coming on. Hope that helps :) :beer:
    [/quote]

    Maybe the dipstick is a little too optimistic? I heard a problem w/ one guy who had a problem w/ his mini-truck. Shop did some work on it, installed a new (too long) dipstick, so he nearly burned up the engine before figuring out the long dipstick was giving him false oil level readings.