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Thread: Oil light coming on - 2004 Hyundai Santa Fe 3.5L

  1. #1
    JayR
    Guest JayR's Avatar

    Default Oil light coming on - 2004 Hyundai Santa Fe 3.5L

    I have a 2004 Hyundai Santa Fe with a 3.5L engine and about 80,000 miles on
    it.

    The oil light came on today while I was driving and mostly stayed on. I
    went to a nearby gas station and had oil added. He put in 2 quarts, but it
    looks like it is now over filled by about a 1/2 a quart -- meaning I guess
    it was about 1 1/2 quarts low before he added the oil.

    Now the oil light comes on but goes on and off. I'm guessing the
    possibilities are: A) a bad oil pressure switch if I'm lucky; or B) the oil
    pump is failing. I don't think it is leaking oil anywhere or has a worn out
    engine etc.

    If it's the oil pump that is going bad, how big of a job is that on this
    vehicle? I am sure that is not something that I want to do (especially
    since I don't even know where the oil pump is located), but is it fairly
    easy for a dealer or other mechanic to replace the oil pump?

    Would it make sense to first try replacing the oil pressure switch? I could
    probably just do that (I assume), depending on where the oil pressure switch
    is located.

    Thanks.

  2. #2
    zayton
    Guest zayton's Avatar

    Default Oil light coming on - 2004 Hyundai Santa Fe 3.5L

    JayR wrote:
    > I have a 2004 Hyundai Santa Fe with a 3.5L engine and about 80,000
    > miles on it.
    >
    > The oil light came on today while I was driving and mostly stayed on.
    > I went to a nearby gas station and had oil added. He put in 2
    > quarts, but it looks like it is now over filled by about a 1/2 a
    > quart -- meaning I guess it was about 1 1/2 quarts low before he
    > added the oil.
    > Now the oil light comes on but goes on and off. I'm guessing the
    > possibilities are: A) a bad oil pressure switch if I'm lucky; or B)
    > the oil pump is failing. I don't think it is leaking oil anywhere or
    > has a worn out engine etc.
    >
    > If it's the oil pump that is going bad, how big of a job is that on
    > this vehicle? I am sure that is not something that I want to do
    > (especially since I don't even know where the oil pump is located),
    > but is it fairly easy for a dealer or other mechanic to replace the
    > oil pump?
    > Would it make sense to first try replacing the oil pressure switch? I
    > could probably just do that (I assume), depending on where the oil
    > pressure switch is located.
    >
    > Thanks.


    Try bringing the oil level down to the proper level first.

  3. #3
    hyundaitech
    Guest hyundaitech's Avatar

    Default Oil light coming on - 2004 Hyundai Santa Fe 3.5L

    On Apr 25, 4:15.pm, "JayR" <J...@rtyesdfgr.mnb> wrote:
    > I have a 2004 Hyundai Santa Fe with a 3.5L engine and about 80,000 miles on
    > it.
    >
    > The oil light came on today while I was driving and mostly stayed on. .I
    > went to a nearby gas station and had oil added. .He put in 2 quarts, but it
    > looks like it is now over filled by about a 1/2 a quart -- meaning I guess
    > it was about 1 1/2 quarts low before he added the oil.
    >
    > Now the oil light comes on but goes on and off. .I'm guessing the
    > possibilities are: A) a bad oil pressure switch if I'm lucky; or B) the oil
    > pump is failing. .I don't think it is leaking oil anywhere or has a worn out
    > engine etc.
    >
    > If it's the oil pump that is going bad, how big of a job is that on this
    > vehicle? .I am sure that is not something that I want to do (especially
    > since I don't even know where the oil pump is located), but is it fairly
    > easy for a dealer or other mechanic to replace the oil pump?
    >
    > Would it make sense to first try replacing the oil pressure switch? .I could
    > probably just do that (I assume), depending on where the oil pressure switch
    > is located.
    >
    > Thanks.


    Don't overlook other small issues, either. On this engine, the wire
    for the oil pressure switch runs in close proximity to the A/C-
    alternator belt pulleys. I've seen cases where the wire
    intermittently rubs the pulley, causing the circuit to ground and
    illuminate the oil lamp.

  4. #4
    JayR
    Guest JayR's Avatar

    Default Oil light coming on - 2004 Hyundai Santa Fe 3.5L

    hyundaitech wrote:
    > On Apr 25, 4:15 pm, "JayR" <J...@rtyesdfgr.mnb> wrote:
    >> I have a 2004 Hyundai Santa Fe with a 3.5L engine and about 80,000
    >> miles on it.
    >>
    >> The oil light came on today while I was driving and mostly stayed
    >> on. I went to a nearby gas station and had oil added. He put in 2
    >> quarts, but it looks like it is now over filled by about a 1/2 a
    >> quart -- meaning I guess it was about 1 1/2 quarts low before he
    >> added the oil.
    >>
    >> Now the oil light comes on but goes on and off. I'm guessing the
    >> possibilities are: A) a bad oil pressure switch if I'm lucky; or B)
    >> the oil pump is failing. I don't think it is leaking oil anywhere or
    >> has a worn out engine etc.
    >>
    >> If it's the oil pump that is going bad, how big of a job is that on
    >> this vehicle? I am sure that is not something that I want to do
    >> (especially since I don't even know where the oil pump is located),
    >> but is it fairly easy for a dealer or other mechanic to replace the
    >> oil pump?
    >>
    >> Would it make sense to first try replacing the oil pressure switch?
    >> I could probably just do that (I assume), depending on where the oil
    >> pressure switch is located.
    >>
    >> Thanks.

    >
    > Don't overlook other small issues, either. On this engine, the wire
    > for the oil pressure switch runs in close proximity to the A/C-
    > alternator belt pulleys. I've seen cases where the wire
    > intermittently rubs the pulley, causing the circuit to ground and
    > illuminate the oil lamp.


    Thanks. I'll check that out.

    Here's an update: After I wrote the above message, I got in my car to see
    if I could buy a Hyundai repair manual at Pep Boys (so I could figure out
    where the oil pump is etc.) and the light didn't come on at all. I thought
    maybe it was because the engine was still cool and maybe that kept the oil
    pressure high enough for the light not to come on. But I decided to just go
    home and skip looking for a repair manual. This morning -- same thing --
    the oil light is no longer coming on.

    Right after I had the oil added yesterday, I noticed that the light hadn't
    gone off so before I left the gas station parking lot I got out and checked
    the oil level again. The gas station owner came over wondering if there was
    a problem and I told him the light was still coming on. He had a VERY heavy
    accent and I could barely understand what he was saying, but he seemed to be
    saying don't worry. And, I think he was trying to say the light will go off
    but it may takes a few weeks? That didn't make sense to me, but who knows
    what he was really saying.

    And, also...., I remember the engine seeming a little noisy then and later
    in the day before I wrote my original post -- like maybe a slight valve
    clattering noise.

    Today, the engine seems quiet and the light doesn't come on.

    So, I'm wondering if it is possible that it does take a while for the oil
    pressure sensor to readjust itself after the new oil was added, and maybe it
    takes a while for the oil to get to everywhere it needs to go before it
    quieted the engine? Seems unlikely to me, but as of today, no light and no
    noise.

  5. #5
    Ed Pawlowski
    Guest Ed Pawlowski's Avatar

    Default Oil light coming on - 2004 Hyundai Santa Fe 3.5L

    "JayR" <JayR@rtyesdfgr.mnb> wrote
    > I also just had the timing belt replaced and a lot of other work
    > (including an oil change) done about 2000 miles ago, so I know what a big
    > job getting to the timing belt is.
    >
    > Now I'm wondering what may be going on. The oil light has not come back
    > on at all for the past few days and everything seems okay. I'm not sure
    > why I would have been 1 1/2 quarts low on oil since the oil was changed
    > less than 2000 miles ago. And I don't know what caused the oil light to
    > come on in the first place, although adding 2 quarts of oil did see to fix
    > that.


    Keep a close eye on the oil level. It is possible the guy refilling the
    crankcase miscounted and did not fill it (and did not bother to check), a
    leak, but you probably would have noticed by now, or you suddenly started to
    get blow by the rings. Used to be valve seals too, but I don't know if
    that would be affected on your engine.

    Car makers do say a quart a thousand miles is considered normal, but I think
    that is a lot, based on my experience with modern engines. I go about 7500
    miles between changes and I've never added oil to either of my Hyundai and
    only once, that I recall, on my Buick and that has 127,000 miles. I always
    kept a few quarts of oil around for top-off, but no more.

  6. #6
    JayR
    Guest JayR's Avatar

    Default Oil light coming on - 2004 Hyundai Santa Fe 3.5L

    Ed Pawlowski wrote:
    > "JayR" <JayR@rtyesdfgr.mnb> wrote
    >> I also just had the timing belt replaced and a lot of other work
    >> (including an oil change) done about 2000 miles ago, so I know what
    >> a big job getting to the timing belt is.
    >>
    >> Now I'm wondering what may be going on. The oil light has not come
    >> back on at all for the past few days and everything seems okay. I'm
    >> not sure why I would have been 1 1/2 quarts low on oil since the oil
    >> was changed less than 2000 miles ago. And I don't know what caused
    >> the oil light to come on in the first place, although adding 2
    >> quarts of oil did see to fix that.

    >
    > Keep a close eye on the oil level. It is possible the guy refilling
    > the crankcase miscounted and did not fill it (and did not bother to
    > check),


    Thanks. I did have that thought -- how could I have been 1 1/2 to 2 quarts
    low when the dealership did an oil change 2000 miles ago. There is no sign
    of any leaking oil -- I looked inside the engine compartment and have been
    checking under the car where it is parked. So, you may be correct -- the
    dealer may not have filled the oil properly when they did the oil change.

    The good news is that the oil light has not been coming on at all after this
    last incident, and the oil level is staying the same.

  7. #7
    JayR
    Guest JayR's Avatar

    Default Oil light coming on - 2004 Hyundai Santa Fe 3.5L

    IlBeBauck@.......... wrote:
    > On Apr 25, 3:15 pm, "JayR" <J...@rtyesdfgr.mnb> wrote:
    >> I have a 2004 Hyundai Santa Fe with a 3.5L engine and about 80,000
    >> miles on it.
    >>
    >> The oil light came on today while I was driving and mostly stayed
    >> on. I went to a nearby gas station and had oil added. He put in 2
    >> quarts, but it looks like it is now over filled by about a 1/2 a
    >> quart -- meaning I guess it was about 1 1/2 quarts low before he
    >> added the oil.
    >>
    >> Now the oil light comes on but goes on and off. I'm guessing the
    >> possibilities are: A) a bad oil pressure switch if I'm lucky; or B)
    >> the oil pump is failing. I don't think it is leaking oil anywhere or
    >> has a worn out engine etc.

    ....
    >>
    >> Would it make sense to first try replacing the oil pressure switch?
    >> I could probably just do that (I assume), depending on where the oil
    >> pressure switch is located.
    >>
    >> Thanks.

    >
    > Find out where the oil tap is on the engine block and remove that
    > fitting , then screw in a pressure guage that goes ujp to at least 60
    > psi. Get someone to read the value while you slowly bring up the
    > RPMS of the engine . Tell us what the values are at idle, 1000, and
    > 2000 RPMS.


    Thanks. Makes sense. I haven't tried that, or asked a mechanic to try that
    yet, but see my reply to Hyundaitech about why (problem is gone again).

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