Help 3.9L oil capacity issue

Discussion in 'General Motoring' started by Moses, Aug 7, 2007.

  1. Moses

    Moses Guest

    I have a 99 RanVan with 3.9, no owners manual. Haynes says all full
    size vans use 5 qts oil. This one, with filter change, shows over full
    with 4 qts. Is this normal?
    Moses, Aug 7, 2007
  2. Moses

    who Guest

    Possibly the oil pan is dented?
    I'd have a look underneath.
    who, Aug 7, 2007
  3. Moses

    Steve Guest

    That'd be a heck of a dent, so it should b e obvious ;-)

    My guess is its got the wrong dipstick.
    Steve, Aug 7, 2007
  4. Moses

    maxpower Guest

    Engine oil with filter change 4.0 qts, Without filter change 3.5 qt

    Glenn Beasley
    Chrysler Tech
    maxpower, Aug 7, 2007
  5. Moses

    Bill Putney Guest

    Why oh why does anyone use Haynes manuals?

    Bill Putney
    (To reply by e-mail, replace the last letter of the alphabet in my
    address with the letter 'x')
    Bill Putney, Aug 7, 2007
  6. Moses

    maxpower Guest

    Wait a minute Bill those manuals are good to have, just the other day I was
    trying to burn a brush pile in the back yard and the pages I pulled out
    made the fire start really fast. Thanx to Haynes I got the fire started
    fast. I still have many pages left for the next time

    maxpower, Aug 7, 2007
  7. Moses

    TNKev Guest

    you just wait till your car breaks down on some country road and you
    don't have your Haynes manual,what are you going to wipe with if you
    have to poop?
    TNKev, Aug 7, 2007
  8. Moses

    Nza Guest

    i've always liked the Robert Bentley manuals. Seems like sometimes
    they are comparable, if not better than some FSMs.
    Nza, Aug 8, 2007
  9. Moses

    Steve Guest

    And why oh why didn't Chrysler give the 3.9 a decent oil capacity?!? I
    guess because it was a shortened LA block and they didn't want to deepen
    the sump. But hell, even the contemporary 3.5 v6 had a 5.5 quart
    capacity (with stock filter, 6.0 quart if you use the FL1A/PH8/PF2 size
    Steve, Aug 8, 2007
  10. Moses

    Nza Guest

    The answer is easy... it would have lasted too long with more oil.
    not to mention people would have been bitching when Jiffy Lube charged
    them for extra quarts of oil not included in the standard deal.

    My '99 3.9 ram van has 118,000 miles on it and it behaves like the oil
    was changed maybe three or four times before I got it. Once I got
    it, I changed the oil immediately... ran it with a quart of marvel
    mystery and the rest oil for 100 miles, then changed the oil and
    filter again. Ran it another 1000 miles, changed the oil and filter
    again. It's running reasonably well, but smells of oil at idle and
    has a "tap tap tap" at idle as well... my first guess would be a
    hydraulic unit... but I don't really know for sure. It has become
    less of a noise, but I really don't have confidence that it's not
    going to be a problem in the next 40k or so.

    The check engine light comes on after about 30 miles on the highway..
    every time. The coolant temp starts to climb about that time as
    well. I am thinking water pump. Can the water pump set the check
    engine light? I get no meaningful codes... I brought it to the
    advance auto store and the f*cker scanned it with the piece of $hit
    and told me it was the O2 sensors... well.. replaced those things and
    30 miles down the road *BAM*.... check engine again. LOL

    Those stupid bastards have cost me more money .... one time I was
    sold a 351 Windsor thermostat when I asked for a 351 cleveland
    thermostat. 10 miles later, the original engine in my brother's '71
    Mustang 'vert was overheated. Love it!
    Nza, Aug 8, 2007
  11. Moses

    Bill Putney Guest

    That may very well be the oil pressure switch in need of replacement
    rather than actual low oil pressure. Less than $20 for the part. That
    is one part you should get from the dealer - aftermarket pressure
    switches are often so far out of cal right out of the box as to give
    false low oil pressure indication. OEM parts generally at least start
    out having been tested to higher standards (tighter tolerances).

    Anyway - very common for these switches to fail on Chrysler vehicles -
    and when they do, it seeems it's always in the direction of falsely
    indicating low pressure - and often leaking oil too.

    Bill Putney
    (To reply by e-mail, replace the last letter of the alphabet in my
    address with the letter 'x')
    Bill Putney, Aug 8, 2007
  12. Moses

    Nza Guest

    Thanks Bill, will get one of those soon.

    That doesn't explain the rise in temperature, though.. turning on the
    heater to max heat brings the temp back down a bit and keeps it at bay
    (on a long highway drive). I haven't tried it on a long drive since
    it's been 90+ outside, though.
    Nza, Aug 9, 2007
  13. Moses

    Steve Guest

    Only indirectly by causing an over-temp that might set the light.

    Overheating after prolonged operation usually comes down to lack of
    coolant flow or lack of air flow. Since this happens on the highway, its
    *probably* not an air flow issue, but some cars don't flow enough air
    through the radiator without a good fan even at highway speeds. Just to
    be sure, check the fan clutch and check the radiator and condensor fins
    for dead bugs, grass, dirt, leaves, etc. For water flow, make sure the
    radiator isn't clogged (if the oil was neglected, I'll bet the coolant
    was also!). Make sure the thermostat opens and opens all the way, and
    make sure the lower hose doesn't collapse. Also make sure the radiator
    cap pressurizes the system fully.
    Steve, Aug 9, 2007
  14. Moses

    Nza Guest

    ok i'll check all those... now that you remind me, the radiator is
    pretty scaly inside. The coolant was brown when I first got it
    because it was just water..

    I will definitely check the fan clutch as well. It's amazing how
    quickly all this troubleshooting ability seems to disappear now that i
    don't do it every day for a paycheck...
    Nza, Aug 9, 2007
  15. Moses

    Steve Guest

    Nza wrote:

    I think you just identified the problem... :p

    The question now is whether just a rigorous flushing will clear it up
    enough, or whether you'll have to have the radiator rodded out.
    Steve, Aug 10, 2007
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