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Wholly crap she ran away on me

Discussion in '6.9L IH & 7.3L IDI Diesels' started by Scrench, May 13, 2019.

  1. Scrench

    Scrench Full Access Member

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    I ordered a shutoff solonoid off amazon and it burned up this is the second time in less than 300 miles. So I took the top off the ip and stripped a piece of copper wire off and wired the tab back. Got in started it and wow she was wide open throttle dropped it in 4 wheel drive dumped the clutch and it wouldn't even lug down. I stomped the throttle and after about 30 seconds it idled down and I drove it on home.
    What could be causing it to burn the solonoid and the headlights out. And now it ha's popped one of the caps off one of the batteries. Could the alternator be over charging
     
  2. Thewespaul

    Thewespaul Supporting Vendor Supporting Member

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    It didn’t run away, the top cover was installed wrong and the metering valve was hung wide open instead of shut, giving you wide open throttle. If you get crappy amazon solenoids they burn up quick, get a proper stanadyne part and it will be good for decades.

    When you run the truck, what is your voltage at?
     
  3. IDIBRONCO

    IDIBRONCO IDIBRONCO

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    Until you said this, I had no guess. Now, I'd say that you're probably right. The voltage regulator's probably not working right. Years ago, on a 1979 F150, I had a voltage regulator wire get a break in the insulation and short out. The alternator still charged, it just didn't stop going up in voltage. I had some friends whose dad had a mechanic shop. I stopped in and he found the problem. He unplugged the regulator and taped up the wire. Then I got to stop in Wal-Mart and buy a new regulator and every light in the f#*&^ng truck except for the dash lights. I guess they had the regulator behind the dash and it saved them. I will say that the headlight were nice and bright for about two seconds before they burned out. This was back in the early 90's when Wal-Mart used to carry all of this stuff.
     
  4. Scrench

    Scrench Full Access Member

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    The factory Guage in the dash stays right in the middle
     
  5. IDIBRONCO

    IDIBRONCO IDIBRONCO

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    That's not an good way to tell. The factory gauges aren't very accurate.
     
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  6. Randy Bush

    Randy Bush Full Access Member

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    Not accurate is an understatement. LOL
     
  7. FrozenMerc

    FrozenMerc Registered User

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    The Factory gauge is an ammeter. It measures and displays amperage, not voltage. Measure the voltage at the battery, you will know quite quickly if the voltage regulator is bad (A very common problem on 1980's Ford Trucks).
     
  8. Scrench

    Scrench Full Access Member

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    OK I went to the zone to get a new alternator and the one that I took off is a 100 amp. I bought a 65 amp. Could the faCT that the one I took off being a 100 amp be causing all my problems
     
  9. Thewespaul

    Thewespaul Supporting Vendor Supporting Member

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    Did you check your voltage when running?
     
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  10. Scrench

    Scrench Full Access Member

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    No sir the guy at the zone told me that 100 amp would cause it to over charge so I just bought a new one
    The new one wires differently my old one had a plug one wire on fld. A bat wire and a ground
    The new alternator has a sta. A fld a ground and bat. Where would I wire the sta too? Thanks for everyone's help
     
  11. Scrench

    Scrench Full Access Member

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    Well just read a sticker on the new alternator says that it has an external regulator
     
  12. Thewespaul

    Thewespaul Supporting Vendor Supporting Member

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    If it’s overcharging (you need to confirm this by checking voltage before replacing anything) then the alternator is fine. Your regulator is the problem.
     
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  13. Scrench

    Scrench Full Access Member

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    OK I'm going to put it back on and check it thanks
     
  14. Scrench

    Scrench Full Access Member

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    OK I took it to the big o and they checked it. 13.50 low 14.69 actual and 1540 high
    Diod trio passed
    Regulator passed
    Rectifier passed
     
  15. Scrench

    Scrench Full Access Member

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    There is no regulator anywhere. They told me it was internal is that correct
     

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