I would probably know what "normal" is if I had replaced my coolant reservoir prior to these issues. It hasn't been see thru since I've owned the truck lol
12.7 Detroit pushing coolant out of overflow
Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by Terry270, Aug 7, 2018.
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Rideandrepair Thanks this.
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13k miles later problem has returned. Wtf is going on
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Did you check heater valves for a small air line? Don’t know about Volvo’s. In 98 a lot of Trucks had air over electric control valves. Turning off water valves on motor will tell if bad ( no heat) they usually put air into system once Cab or Bunk reaches desired temp and shut off . Once valve closes with bad valve air goes into system (100 psi ) May only be on bunk heater Cab may have one too or be cable manual type
Terry270 Thanks this. -
I’m thinking you turned on water valves for heat recently? Problem came back?
Terry270 and Cam Roberts Thank this. -
I had the same thought but yeah it would be the other way aroundRideandrepair Thanks this. -
Hi. I have 2013 Peterbilt, Paccar MX13. The coolant is overflowing from coolant tank. The radiator cap, thermostat, egr cooler, air compressor and the coolant tank all good but still have the same issue. Does anyone know what is going on
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