2008 Mack Pinnacle Leaking Water on passenger floor

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by Brandon0928, Jul 6, 2022.

  1. Brandon0928

    Brandon0928 Light Load Member

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    May 14, 2022
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    2008 Mack Pinnacle is leaking water on passenger floor when AC is on. It takes a hot minute even once I turn the ac off to quit leaking. It’s definitely water not antifreeze. When I get out of the truck you can see it leaking underneath so does that eliminate that the tube is not plugged ? The condensation is just insane under there. What could this be ?
     

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  3. kranky1

    kranky1 Road Train Member

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    Drain in the heater box must be plugged. That’s the water that should be a puddle under the truck, not in the passenger footwell.
     
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  4. Brandon0928

    Brandon0928 Light Load Member

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    This was it! Thanks!!
     
    kranky1 Thanks this.
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