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  1. T

    2.5 Na diesel high RPM

    It’s not running away. It will just rev up to a certain point then it’ll come back down. It continues and gets worse the longer you run it. When I turn the ignition off, it runs for a few more seconds then cuts off.
  2. T

    2.5 Na diesel high RPM

    Hey thanks for reply. No, throttle cable is new and it happens even if you just let it sit and run awhile.
  3. T

    2.5 Na diesel high RPM

    Hello all, I have an 89 127 with a 2.5 na diesel. I can start it just fine and drive it around for a little bit but once it heats up the engine starts to rev at high rpm’s very sporadically. You can get it to go back down to normal if you cover the intake for half a second but then the Rpm’s...
  4. T

    Introduction

    Hello Landy brothers/sisters. New on the forum. I’m a younger guy loving these old truck but I don’t know a whole lot about working on these old diesel motors. I have a 87 V8 110 and an 89 127 w/ 2.5 na diesel. Most my problems come from the 127 looking forward to some knowledge passed down my way
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