pete ammeter

Discussion in 'Trucks [ Eighteen Wheelers ]' started by bullfrog103, Jan 9, 2012.

  1. bullfrog103

    bullfrog103 Bobtail Member

    4
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    Jan 9, 2012
    Baton Rouge, La.
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    99 pete 379 and the analog ammeter gauge not working. bought new gauge but didn't solve the problem.
     
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  3. bender

    bender Road Train Member

    2,105
    1,360
    Jul 20, 2010
    Don't Kid Yourself
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    What is the gauge showing?
     
  4. Duramaxxed

    Duramaxxed Light Load Member

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    Jan 2, 2012
    Bourbonnais, IL
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    Gimme the last 6 of your vin.
     
  5. truckbiz

    truckbiz Light Load Member

    Don't mean to hijack bullfrog's post, I have a '98 378, ammeter doesn't work either, just sits @ 0. Volt gage works so this has been on the far back burner, I'll sit back and listen, Thanks. (456554)
     
  6. Duramaxxed

    Duramaxxed Light Load Member

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    Jan 2, 2012
    Bourbonnais, IL
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    I think there are two fuses in the harness from the ammeter sensor to the gauge head. Your sensor is probably bad. The sensor is an inductive pickup, located usually on the battery cables somewhere near the starter. Hope this helps. Part number for sensor is most likely a Q21-1032.
     
  7. kalh7

    kalh7 Light Load Member

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    Mar 28, 2007
    southern illinois
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    wouldnt really worry about it not working, id rather have the volt gauge. find some other gauge you want and put it in its place.
     
  8. truckbiz

    truckbiz Light Load Member

    Thank you Duramaxxed, sounds easy enough to look into.

    Funny how things change, I can remember when volt gages first came in vehicles I thought they were pointless, why would you need a voltmeter when you already have an ammeter?? now I have to agree with you kalh7, I would rather have the voltmeter. But as long as it's there I'd like to fix it.
     
  9. bullfrog103

    bullfrog103 Bobtail Member

    4
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    Jan 9, 2012
    Baton Rouge, La.
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    Thanks Duramaxxed. I checked with Peterbilt today and gave them part # Q21-1032 and discovered a sensor for the amp meter somewhere between the fire wall and the starter. I'm planning a wiring safari in the near future with the wiring diagram Pete gave me.
     
  10. bullfrog103

    bullfrog103 Bobtail Member

    4
    0
    Jan 9, 2012
    Baton Rouge, La.
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    I checked both fuses and they were ok. I also replaced a 150 amp circuit breaker located in the fram right above the starter. Didn't even know it was there and 2 Pete parts houses didn't know about it either. Barney at Shreveport Pete knew about it and explain alot to me. He's been there over 20 years and is good.
     
  11. bullfrog103

    bullfrog103 Bobtail Member

    4
    0
    Jan 9, 2012
    Baton Rouge, La.
    0
    FYI. Part Q21-1032 crosses over to part MS-1150 at Pete. It's called an Amp Meter Sensor.
     
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