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T. Belt Light on 1HD-FT..questions

Discussion in 'Diesel Tech / 24 volts' started by tlcruiserman, Jul 13, 2005.

  1. tlcruiserman

    tlcruiserman SILVER Star

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    Hello everyone,

    I am looking for some detailed information about the timing belt light I have on my HDJ80 (1HD-FT). I am pretty sure the timing belt was changed within the last 2 years on my 80, and just yesterday the t. belt light came on. I know it is not that big of a deal to change it. What I am wonder is how this is triggered to come on, it is tension on the belt that changes enough to trigger it, or is is a mileage calculation and after so many miles it comes on, or maybe it is a change in valve timing that the computer can pick up on thinking timing belt needs to be changed. I am out of town so I have not had access to my manuals to look it up. Anyone know for sure how this works on a 1HD-FT

    Thanks,

    Michael
     
  2. neowulf

    neowulf

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    miling kalk. probably forgot to reset it when they changed it last time.
    their may be a resetbuton on the dash opositt to milecounter reset button , jou have to putt a stick in to reset it . and there was som other way to it to , i'l look it up for you if this dont work for you .
     
  3. tlcruiserman

    tlcruiserman SILVER Star

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    Interesting, I have another rubber plug to fill a hole in the clear plastic near the trip odometer reset but the guage panel does not have anything that you could reset behing that plug, maybe mine was newer and had another way of resetting it. Let me know what you find out.

    thanks again.

    Michael
     
  4. neowulf

    neowulf

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    take out the rubberplug and press the botton behind it (its only 1mm so it can be hard to spot)
     
  5. cruiseruser

    cruiseruser

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    1hd-ft

    Hello Michael,

    Hope you get it straightened out. Can you tell me how you like your 1hd-ft? Fuel economy? 5-speed or auto? how many miles on it? how long you've had it? Sorry to bowl you over with questions. I'm just about to swap one into my 80 and can't wait. -Ryan.
     
  6. Radd Cruisers

    Radd Cruisers

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    Howdy, I worked with a number of Norweigen(spelling?)folk in a ship drive building company in Vancouver. Damn good people, my best friend is a native Norweigen and is the best fabricator welder I have ever met.

    By the way your aviator rocks.....


    Welcome.

    Rob
     
  7. Radd Cruisers

    Radd Cruisers

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    Howdy, I worked with a number of Norweigen(spelling?)folk in a ship drive building company in Vancouver. Damn good people, my best friend is a native Norweigen and is the best fabricator welder I have ever met.

    By the way your aviator rocks.....


    Welcome.

    Rob

    PS Michael, could you post a couple pics of your truck under the hood?
     
  8. beanz2

    beanz2 Moderator

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    The t-belt light is activated by a third odometer-like device behind the speedometer face panel. None of 80 series odometers are elactronic and they should have a t-belt light reset button behind the rubber plug. 78/79/10x series have an electronic mechanism and it's reset by a certain sequence of turning the ignition and pressing the tripmeter button.

    There are rumors at least on the early diesel 80 series there is a wiring error in the harness and a blocked air filter can cause a flashing t-belt light under certain moments. But the light should only be flashing, not lit steadily.

    Dave
     
  9. roscoFJ73

    roscoFJ73

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    Yep It has a little gearbox that turns the light on every 100000 klms. If it hasnt been done for 2 years it may have clocked that up.
     
  10. Towpack

    Towpack

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    Reset button on the speedo,just behind the grommet.
    P7140023 (Medium).JPG
     
  11. tlcruiserman

    tlcruiserman SILVER Star

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    Dave,

    I am not sure I understand about non of the odemeters are electronic on the 80 series everyone I have every had has a electronic sensor that plugs into where a cable would on the back of transfer case, that would mean that a pulse signal drives the mechanical odemeter at some point. or where you making the point that the actual odometer is mechical?

    Thanks,

    Michael
     
  12. tlcruiserman

    tlcruiserman SILVER Star

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    Ah ha I see the little black botton in your picture, I did not notice that on mine I will look when I get back in town. thank you so much for the feedback :)

    Rad - I will take some pics of my HDJ80 when I get back in town, hopefully have them posted by end of weekend.

    Cheers,

    Michael
     
  13. tlcruiserman

    tlcruiserman SILVER Star

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    Hey Ryan,

    I have a 96' HDJ80 that I got in January it has the 1HD-FT with inter-cooler. The truck is a work horse and is running 4.11 gear with 315 (35" tires) Mileage has been in the low 20's like 20-23. I recently swaped out the turbo gauge for an EGT guage (boost is 13lbs max) the EGT's were very low no more than 800F so I turned up the fuel...Man it is like a new engine under the hood, way more power, mileage I have not calculated yet. Currently I never get black smoke and towing a 16ft trailer with 84' HJ60 on it up a grade was 80klm with 1050egt's and it was still pulling just fine (kilometers are actually higher - bigger tires speedo is of). the cruiser has 19x,000 kilometers on it.

    I am very happy with it, especially since turning up the fuel, truck totally rocks.

    Cheers,

    Michael
     
  14. beanz2

    beanz2 Moderator

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    I'm referring to the odometer. Of course you know the 80 odo has numbers on mechanical drums that actually rotate like this:

    [​IMG]

    And you also know the 100 (also the 78/79) have an LCD odo like this:

    [​IMG]

    Dave
     
  15. cruiseruser

    cruiseruser

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    Thanks Michael for the info. I want to talk more with you. Maybe I'll PM my number. Cheers, Ryan.
     
  16. Tapage

    Tapage Club 4X4 Panamá SILVER Star

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    do you have in your plans swap to 4.56 .. ?
     
  17. tlcruiserman

    tlcruiserman SILVER Star

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    No plans to swap the gear any lower than I have they are fine the way they are. Originally it had factory 3.70 gears that were swapped out for 4.11 and with the 35" and all the power from the 1HD-FT it is a perfect fit.

    Cheers,

    Michael
     
  18. Tapage

    Tapage Club 4X4 Panamá SILVER Star

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    mmm only I suppose it, because you saw, that you tow so much ...