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Runs for few seconds

Discussion in 'Motorcycle Tech Talk' started by charlie46, Oct 22, 2013.

  1. hotroadking

    hotroadking Super Moderator Staff Member

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    thats an easy test, pull sensor
    put in boiling water with meter
    and test the rate of change
  2. baggerpaul

    baggerpaul Well-Known Member

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    Easy checked insted of buying. Hook up scaner look at data stream key on engine off .unplug the senor data stream should go to -30 jump across the wires its a a negative thermister sensor it should go to + 340 deg fr. Ok so now we know circuit from sensor to computer is good .cold engine data stream should read ambient temp and as it warms and temp rises you should see the voltage drop slow and steady as the sensor rises in temp works off a 5 volt scale .you should see a steady drop in voltage.ambient temp key on egine off starting at around 70 deg might be 3.25 volts dc rough estimate
  3. joshbob

    joshbob Well-Known Member

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    . . . and hope your problem's fixed, Charlie . . . read with interest where the young guy tested for spark with a screwdriver LOL. I've heard one can use a nail in a pinch. Guess you can get away with that on the older bikes. Newer ones are far too complicated for my taste; that's one reason I opted to build an older machine, besides the cool factor. But they come with their own unique problems as well. Great thing is, most of them are fixable by the average wrench without expensive diagnostic equipment or extensive electronic knowledge.

    A fella really has to have specialized training in a tech school to be a good mechanic these days.
    Last edited: Oct 26, 2013
  4. Fatboy128

    Fatboy128 Well-Known Member

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    Yep. My 3rd son graduated from MMI in Phoenix this past may he had trouble finding a job in a shop so he went to Craig's list and found tons of work out of his truck . Finally an Indy gave him a shot part time. Within 2 weeks his skills learned started increasing business and the Indy put him full time and to date the kid has had 5 raises. MMI graduates learn all the new stuff.


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  5. charlie46

    charlie46 Well-Known Member

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    Yeah the old ones are way cool but, they break down SO often. This is my first breakdown in almost 5yrs. & 71+k mis.
  6. FLHTbiker

    FLHTbiker Moderator Staff Member

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    That's good to hear for you. How many sons live in the Phoenix area.
  7. Lucifer

    Lucifer Well-Known Member

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    Don't know if the old ones broke down all that often...a lot of the time when they went down it was because the owner was messing around with it...there is a lot more to go wrong with the newer bikes because of all the electronics and most times it's a sensor that goes south rather than something mechanical(like yours now)... They've taken the back yard DIYer out of it except for general maintenance for the most part unless they have thousands of dollars to invest in diagnostic equipment to test circuits and sensors,or just guess at what sensor is bad,which could get expensive quick with a few wrong guesses ;)

    IMO Both old and new have their Pros & Cons and I wouldn't say one is better than the other...Lots of Evos still running around that have been trouble free for years and years and hundreds of thousand miles...depends on how they were maintained and whether the performance envelope has been pushed or not...old or new:cool:
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  8. Fatboy128

    Fatboy128 Well-Known Member

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    Three sons, 3 daughter in laws, 8 grand kids. Then 4th son, wife and 2 grand kids in PA.


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  9. baggerpaul

    baggerpaul Well-Known Member

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    If your not a good drivability tech there is no work for you as a mechanic.there is work for you as a parts changer and you will make parts changer wages. Good drivability techs make in the neighborhood of 80.000 grand a year .parts changer shop helper 25.000 to 30 max. And get the shit work and he better be a good parts changer for those wages
  10. charlie46

    charlie46 Well-Known Member

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    Just saying 71+k trouble free miles is Better than good by ANY standard. Also as I said old bikes are way cool but I'll take the new stuff. JMHO
  11. joshbob

    joshbob Well-Known Member

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    I'm just glad we are all able to get out and ride, boys. Shoot, Charlie, it just shows you took good care of your sickle to have 71,000 trouble free miles. I think it would be a minor miracle if I got through a riding season without something breaking on mine LOL.
  12. charlie46

    charlie46 Well-Known Member

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    Just got back from indy. Turning into a dissaster. Changed 1.MAP sensor,2.Crank possition sensor,3.Engine temp. sensor. No good ! Waiting on a borrowed ECM to try. @$#&*^%$*!
  13. joshbob

    joshbob Well-Known Member

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    Sounds like you got the sensor blues. Sorry to hear it. Wonder why so many went south all at once . . .
  14. Lucifer

    Lucifer Well-Known Member

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    Did ya check the coil,and spark plug cables??....With these new bikes ,Electrical Diagnostic Manual is more important to have than the Service Manual...

    I don't know how much changed since '03... For the codes you threw and the schematic in mine that goes with those codes 3 pins from the ECM 29 coilF BE/O...27 Ion GY/BE 11 coil right Y/BE and in the plug at the coil a Y/GN that goes to injectors,fuel pump and system relay...and check resistance of spark plug cables The harness is the 4 wire one that plugs into your coil is what you should check before throwing a bunch of sensors at it
  15. Fatboy128

    Fatboy128 Well-Known Member

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    No it's what is called shot gunning. the guy doesn't know what is wrong.

    Crank position sensors don't make sense with an overly rich condition. If gas is getting dumped into cylinders I would guess at O2 sensors, idle sensor, temp sensor or ECM. Sounds like the only thing left is the ECM.


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  16. baggerpaul

    baggerpaul Well-Known Member

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    throw that bitch on a trailer and bring it to me ! ill fix it for nothing you pay for parts
    Last edited: Oct 30, 2013
  17. baggerpaul

    baggerpaul Well-Known Member

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    tps will dump fuel . week ass coil , have we checked compression! DID it jump time ! ill have a diagnosis in ten min bring it to me!
  18. baggerpaul

    baggerpaul Well-Known Member

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    how the hell is he going to throw a pcm at it with out writing the vin to the pcm so that your security system see the same vin and allows you to start the bike . is your bike a late model street glide . or are we working on another bike . does your indy have a digital tech?
  19. FLHTbiker

    FLHTbiker Moderator Staff Member

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    Yea sounds like he is a parts changer and doesn't know his diagnostics. I agree take it to Paul.
  20. hotroadking

    hotroadking Super Moderator Staff Member

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    Yeah he's tossing parts you need the right
    diagnostic tools or you'll be spending tons of green
    for nothing...

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