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BJ60 Overheating

Discussion in '60-Series Wagons' started by randman59, Aug 8, 2005.

  1. randman59

    randman59

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    Ok, I was rushed and lazy. I had a mechanic replace the waterpump, rad hoses, thermostat, install a block heater and powerflush the 3b. Afterpicking it up, the engine gets really hot (almost to red zone), then the thermostat opens and the temp drops to just over 1/2 way mark. Pulled the thermostat and tested, it seems to be opening to high, so I went to Toyota purchased another and installed it. It does the same thing! Previously, it would run between 1/4 to 1/2 zone. Any ideas? (besides going back to the mechanic, had too many problems with them).

    1985 BJ60
    3.4l 3B Diesel
    Naturally Asperated
    H55
    340k
     
  2. wesintl

    wesintl

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    The 3b Runs hot in a hot ambient temp. Or you might have a crack in the head. Do a coolant test for exhaust gases in it. $50 at napa.. Then install aftermarket temp gauge cause the stock one sucks. Search the intl section as there is alot if 3b info there :)
     
  3. Tapage

    Tapage Club 4X4 Panamá SILVER Star

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    I thought the best place to start this thread is in the internat section .. but anycase I thought in some things.

    1. did you check your fan clutch ( if you have )
    2. when your 3B engine run hot ( in the red zone ) your stop . ? or continue running slow and relax to get down the temp .. ?
     
  4. cruiser_guy

    cruiser_guy

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    Make sure the air is all out!! You may need a few warm/cool cycles for that to happen. Mine rarely gets to the red zone on the factory guage and I've got A/C as well as a water cooled turbo too!!