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Qualcomm causes Truck to Break down

Discussion in 'Trucks [ Eighteen Wheelers ]' started by TennTrucker, May 16, 2013.

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  1. May 16, 2013 #1
    TennTrucker

    TennTrucker Light Load Member

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    Aug 20, 2010
    Dresden, Tn
    0
    Here is a weird story. Two days ago while driving down I90 crossing from Pa. into Oh. my truck started pouring out a whitish smoke. Stopped at a TA to see about it. Was told it looks like an injector failed. Was told not to drive it because it could blow a tip a really mess up my motor ( C9 Cat). Had it towed 40 miles back to Erie Pa. to the Cat dealer. They started on it late yesterday afternoon and when they tried to read my ECM they couldn't get a reading, ECO keep kicking them off. So they were convinced it was a injecter, so they start pulling them. All injectors were fine, at this point they have no ideal. So they put the truck back together and try to read the ECM again with no luck. About this time I had an ideal, this Qualcomm was installed about 6 months ago and has never worked properly, keep getting error messages of a failed sensor. Have reported it several times but since it continues to log my HOS properly nothing was done about it. So I went and disconnected the qc and bam the truck quits smoking and starts running smooth. They are now able to read the ECM, and find nothing wrong with the truck. Have hooked the qc back up except for the data feed from the truck, have elogs and messaging. Contacted the company about this, they want me to get to the HQ as soon as I can so they can remove this unit totally, install a new system and return the old unit to Qualcomm to get it checked out and reimburse me for repair cost. Has anyone ever heard of a Qualcomm messing up a truck before?

    sent from my Galaxy Tab2
     
    Last edited: May 16, 2013
    TennTrucker, May 16, 2013
    TennTrucker, May 16, 2013
    #1
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  3. May 16, 2013 #2
    Cat sdp

    Cat sdp . .

    21,201
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    Apr 8, 2012
    Orion's Belt
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    Good luck getting any money out of Qualcomm . Please let us know how it works out....
     
    Cat sdp, May 16, 2013
    Cat sdp, May 16, 2013
    #2
  4. May 16, 2013 #3
    Heavyd

    Heavyd Road Train Member

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    Feb 4, 2009
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    It may not be the Qualcomm itself, but how it was installed. Most of the powers/grounds and datalink connections are flimsy, cheap and quick to make installation economical. I have seen many installs where whoever installed it just tapped into existing wiring instead of having dedicated power and ground for the unit. This can lead to issues like yours. The poor wiring will cause havoc on datalinks and "dirty electronic" grounds introduce false signals that can back feed anywhere.
     
    Heavyd, May 16, 2013
    Heavyd, May 16, 2013
    #3
  5. May 16, 2013 #4
    honeybadger0917

    honeybadger0917 Bobtail Member

    19
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    May 7, 2013
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    Doubt the qcomm is causing issues. Id bet 100 to one its wiring issues. Someone was too lazy to run new wires
     
    honeybadger0917, May 16, 2013
    honeybadger0917, May 16, 2013
    #4
  7. May 17, 2013 #5
    Northwinds1

    Northwinds1 Bobtail Member

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    Mar 11, 2013
    0
    What qualcomm system are you using? Do you still have wiring from an older qualcomm system in the truck? Seen old antenna wire harness plug corrode and cause a short/back feed to the datalink wiring. The truck had come from the factory with a qualcomm but when someone put the new mcp 200 qualcomm in it they never disconnected the old qualcomm completely. I deal with them everyday, its rare that a qualcomm causes a problem with the truck. Its usually a problem with the truck thats over looked.
     
    Northwinds1, May 17, 2013
    Northwinds1, May 17, 2013
    #5
  8. May 17, 2013 #6
    TennTrucker

    TennTrucker Light Load Member

    250
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    Aug 20, 2010
    Dresden, Tn
    0
    Its a mcp 200 with one of the new smaller antennas, who system is new. I 'm thinking they use the old wiring.

    Sent from my DROID X2 using Tapatalk 2
     
    TennTrucker, May 17, 2013
    TennTrucker, May 17, 2013
    #6
  9. May 18, 2013 #7
    Red Rocket 1964

    Red Rocket 1964 Light Load Member

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    Jan 31, 2013
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    I had the Data Bus wiring from my engine to the sleeper (where it connected to the Qcomm, which had been removed) rubbed through, rendering my gauges inoperable. After 2k in diagnostic time, the tech unplugged the Data Bus to the sleeper. Problem solved.
     
    Red Rocket 1964, May 18, 2013
    Red Rocket 1964, May 18, 2013
    #7
  10. May 22, 2013 #8
    Mack427

    Mack427 Medium Load Member

    323
    93
    Jan 22, 2009
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    seen it keep a truck from starting before
     
    Mack427, May 22, 2013
    Mack427, May 22, 2013
    #8
  11. May 22, 2013 #9
    Heavyd

    Heavyd Road Train Member

    7,812
    6,265
    Feb 4, 2009
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    Yes, this true. If the truck has an electronic automatic transmission the engine and transmission communicate at key on. The transmission will tell the engine if it is in a valid state and if it is ok to crank. If either cannot communicate with each other it will not allow the engine to crank.
     
    Heavyd, May 22, 2013
    Heavyd, May 22, 2013
    #9
  12. May 23, 2013 #10
    TennTrucker

    TennTrucker Light Load Member

    250
    168
    Aug 20, 2010
    Dresden, Tn
    0
    Well its in the shop now, let the testing begin!

    Sent from my DROID X2 using Tapatalk 2
     
    TennTrucker, May 23, 2013
    TennTrucker, May 23, 2013
    #10
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