Add 98 GSXR 750 problem. (aka: I embarrassed myself)

Discussion in 'Motorbike Technical Discussion' started by Josh Assing, Feb 8, 2005.

  1. Josh Assing

    Josh Assing Guest

    The other day my bike got up to temp; and the fans clicked on while waiting at a
    red light.

    It started to idle very poorly; so I bumped up the idle. the light changed, went
    into gear, and the bike stalled.

    The Check engine (FI/TEMP) light came on (due to the stall). I hit the starter,
    it started -- and I took off. It had entered "gimp home mode" so I just the
    bike off while on the freeway; and restarted, and all power came back.

    I noticed the RPM & speedo needles were no longer "rock solid" and they
    "virbrated" a bit. I pulled over & let it get back up to temp -- it idled fine.

    Could there be an electrical problem or something else?

    Previously it had always idled nicely & never stalled... And I have this fear
    of being stranded....
    Josh Assing, Feb 8, 2005
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  2. Josh Assing

    Eric Goforth Guest

    My car does this when the battery is almost dead.


    Hello, Josh Assing !
    Eric Goforth, Feb 10, 2005
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  3. A good battery ought to last twice that. My last battery (Yuasa)
    lasted nearly 6 years, the current one (Varta) is in its 4th year, and
    still working nicely.

    Did you check for corrosion on the battery terminals and at the ground
    connections? Does it charge properly? Checked the voltage?


    `96 ZX6R
    `86 Maico 500
    Torgeir Haukenes, Feb 11, 2005
  4. Josh Assing

    Josh Assing Guest

    Thanks.... I"ll try replacing the battery -- it's due anyway -- it's two years
    old now....
    Josh Assing, Feb 11, 2005
  5. Josh Assing

    RA Guest

    RA, Feb 11, 2005
  6. Josh Assing

    RA Guest


    Not enough information to tell you what's wrong.
    Do this.
    Check every and I mean EVERY electrical connection. This may include
    lifting the fuel tank. Pull every one of them apart and put dielectric
    grease on all of them and reconnect, EVEN the FI connections and the ECU
    Start it, let it heat until the fans come on, ride it around the block. If
    that doesn't solve the problem look deeper at the FI sys. Maybe an injector
    fried.... no way to tell unless I can put my hands on it.

    Start with the connectors first.
    RA, Feb 11, 2005
  7. message
    Not to bash you Josh but that is just BULL. IF
    a person rides their motorcycle as much as the
    average monkey ( I wont go into the details of
    what I think of Cage Monkeys ) then the battery
    WILL last the advertised 5+ years. I've got 4
    years on the current battery in my 79' GL1000 it's
    survived temps from 100 F to over -35F ( wind
    chill SUCKED ) Spins over and starts right up with
    just a bit of choke. But yes I do agree your
    battery has crapped out for some reason.
    Had a similar experience with the wife's 97's
    Saturn. That car with through 2 batteries in
    147,000 miles...then some idiot in ford ran over
    the car.

    Keith Schiffner
    History does not record anywhere at any time a
    religion that has any rational basis. Religion is
    a crutch for people not strong enough to stand up
    to the unknown without help. But, like dandruff,
    most people do have a religion and spend time and
    money on it and seem to derive considerable
    pleasure from fiddling with it.
    Robert Heinlein
    Keith Schiffner, Feb 11, 2005
  8. Josh Assing

    Paul Cassel Guest

    There ARE defective batteries and ones that don't seem to last nearly as
    long as their projected life. We had a series of bad batteries made by
    Yuasa for the DRZ line and there have been others too.

    Also you don't know how often he or the previous owner used the bike. It
    may have sat for a long while or otherwise deep cycled.

    Paul Cassel, Feb 11, 2005
  9. Josh Assing

    Josh Assing Guest

    Could there be an electrical problem or something else?
    Ah -- thanks -- very helpful. I'll get right on the something else.
    Josh Assing, Feb 11, 2005
  10. Josh Assing

    Josh Assing Guest

    ;-) You're a funny guy.
    Easy enough....

    Well; that's what's really weird, after the 1st time it did that; it did get up
    to temp and idled just fine. The rough idle thing happened right before the fan
    came on...

    Thanks for the ideas....

    I was *hoping* it's a sorta "common" problem, or at the very least something
    that sounds similar.....

    Josh Assing, Feb 11, 2005
  11. Josh Assing

    Josh Assing Guest

    Well; over the years, I've discovered that boat batteries & bike batteries can
    last 4 years, but after 2 they start to go "down hill"
    I had a problem with this battery (well, charging actually) where it wasn't
    being charged by the system -- so it was in a constant state of being charged on
    the charger, then drained to death -- those cycles aren't good on a regular

    Josh Assing, Feb 11, 2005
  12. Josh Assing

    Josh Assing Guest

    Not to bash you Josh but that is just BULL. IF

    Not to bash you Keith -- but how do you know it's bull? have you tested the SG
    of the battery? have you tested it's ability to hold a charge over time? I've
    had bikes for over 20 years; and I'm always "happy" if a battery lasts 3 years,
    but I've noticed that they start to deteriorate noticably after 2 - so I replace
    them somewhere betwen 2 & 3 years just becuase it sucks being stranded. And w/o
    tools to remove the seat, it's a PITA, and impossible to "get a jump" should the
    battery go dead.

    The battery does not hold a charge very long, 4 days of sitting, and it just
    barely cranks it over enough to start it.
    At least we're at a consensus about that. <G>

    Josh Assing, Feb 11, 2005
  13. Josh Assing

    Josh Assing Guest

    Also you don't know how often he or the previous owner used the bike. It
    That's exactly what has happened -- it deep cycled for about 2 months until I
    discovered the problem...

    I'll pick up another battery the next time I head to the mainland.


    ps: Anyone have any recommendations on good battery? Do they make GEL batteries
    for bikes, and if so; how do they perform?
    Josh Assing, Feb 11, 2005
  14. "Paul Cassel"
    Good point Paul, I forgot that part. Yes, I too
    have bought batteries that crapped out for no good
    Again valid pionts that I should have addressed.
    Nefarious Necrologist 42nd Degree
    Some people ride, some just like to show off their
    jewelry once in a while.
    Dum vivimus, vivamus
    <:(3 )3~ <:(3 )3~ <:(3 )~ <:(3 )~
    Keith Schiffner, Feb 11, 2005
  15. Josh Assing

    hans Guest



    modern connectors dont need grease they are already sealed connectors!!!!!!!
    hans, Feb 12, 2005
  16. Josh Assing

    John Johnson Guest

    OK, I'll bite. Why not?
    Define 'modern'. My '94 VFR certainly does not have sealed connectors.
    John Johnson, Feb 12, 2005
  17. Josh Assing

    hans Guest

    all petroleum based dielectric grease degrade plastics and cause them to
    harden and crack or melt.
    hans, Feb 13, 2005
  18. Josh Assing

    John Johnson Guest

    One could use one of the silicone dielectric formulations that claim to
    be compatible with plastics if one were worried about their plastics:


    Many people recommend ditching the plastic quick-connects in any case
    for either ring terminals or solder joints. Either one is less likely to
    corrode, with the trade-off that they are somewhat more difficult to
    disconnect should you have to.

    out of curiosity, what bikes come from the factory with sealed
    John Johnson, Feb 13, 2005
  19. Josh Assing

    Phil Scott Guest

    sounds like its real low on water...did you check the

    if its low, you need to find the leak...maybe its just an old
    radiator cap gasket thats leaking.

    be sure to use the recommended coolant.

    Phil Scott
    Phil Scott, Feb 13, 2005
  20. Josh Assing

    Josh Assing Guest

    sounds like its real low on water...did you check the
    Radiator is full, with new engine ice.

    Josh Assing, Feb 13, 2005
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