Still doing some diagnosing today, but we took the BJ74 down to Vegas on Saturday...got about 30 miles out and it overheated. Temp gauge was pegged, steam from the overflow. We were driving 70-75mph with a mild headwind on a cool-ish rainy NV day.
@Mace rescued us - THANKS!
System was "dry" and took 2 gallons of water. Drove it around Vegas on Sunday with no issues, checking the system regularly. Some quick searches led me to a likely solution - fan clutch...so that is already ordered and on it's way. ( @beno recommended)
http://www.amazon.com/Aisin-FCT-001...&redirect=true&ref_=oh_aui_detailpage_o00_s00
Will be doing a few other items while I'm in there as well...cap, thermostat, gasket for sure...also plan to pull the radiator just to check for any blockages.
We then chose to drive home last night...entire trip went well, took it a little easier on the climbs and was paying CLOSE attention to the factory temp gauge. Got to St George (100 miles) and the gauge dipped about 1/8", then instantly pegged. The fuel gauge pegged too! Quickly pulled over...no steam...hmmm...drove another mile to a gas station and pulled in. Overflow was gurgling, but no steam. Cap was hot. Had the heater cranked, blowing hot air. Top/inlet on the radiator was hot, balance of the radiator was very cool (felt the sides). Refired the truck, and gauges were back to normal. Opted to drive thru town for the last 15 miles...got about a mile down the road and the fuel/temp gauges again pegged! Pulled over again, no steam...opted to continue our drive home.
About 3 miles from the house, at 40mph, we still had the heater cranked and hot air blowing (if it's blowing hot air, there is still water circulating)...but it started cooling down, and within 1/2 mile was blowing cold. Pulled into another gas station to check everything over again. No steam, same felt-temps as before (hot cap, hot radiator inlet, cool radiator). Fuel/Temp gauges have stayed pegged. Sat in the lot for 10-15 minutes...still no steam. Fired the truck yet again, gauges returned to normal.
AGAIN decided to continue on for the last 2 miles...got half way, and the gauges pegged...and as we pulled into the driveway, the heat was beginning to blow hot again.
The gauge issue appears to be correctable, Temp Sending Unit? and I'll be looking more into that today. I'm wondering if there isn't "something" floating inside the cooling system that is blocking the heat valve, and causing other issues as well. All on today's exploratory list.
Thoughts and experience welcome
Quick details: stock 13BT, 200000km, a440...
@Mace rescued us - THANKS!
System was "dry" and took 2 gallons of water. Drove it around Vegas on Sunday with no issues, checking the system regularly. Some quick searches led me to a likely solution - fan clutch...so that is already ordered and on it's way. ( @beno recommended)
http://www.amazon.com/Aisin-FCT-001...&redirect=true&ref_=oh_aui_detailpage_o00_s00
Will be doing a few other items while I'm in there as well...cap, thermostat, gasket for sure...also plan to pull the radiator just to check for any blockages.
We then chose to drive home last night...entire trip went well, took it a little easier on the climbs and was paying CLOSE attention to the factory temp gauge. Got to St George (100 miles) and the gauge dipped about 1/8", then instantly pegged. The fuel gauge pegged too! Quickly pulled over...no steam...hmmm...drove another mile to a gas station and pulled in. Overflow was gurgling, but no steam. Cap was hot. Had the heater cranked, blowing hot air. Top/inlet on the radiator was hot, balance of the radiator was very cool (felt the sides). Refired the truck, and gauges were back to normal. Opted to drive thru town for the last 15 miles...got about a mile down the road and the fuel/temp gauges again pegged! Pulled over again, no steam...opted to continue our drive home.
About 3 miles from the house, at 40mph, we still had the heater cranked and hot air blowing (if it's blowing hot air, there is still water circulating)...but it started cooling down, and within 1/2 mile was blowing cold. Pulled into another gas station to check everything over again. No steam, same felt-temps as before (hot cap, hot radiator inlet, cool radiator). Fuel/Temp gauges have stayed pegged. Sat in the lot for 10-15 minutes...still no steam. Fired the truck yet again, gauges returned to normal.
AGAIN decided to continue on for the last 2 miles...got half way, and the gauges pegged...and as we pulled into the driveway, the heat was beginning to blow hot again.
The gauge issue appears to be correctable, Temp Sending Unit? and I'll be looking more into that today. I'm wondering if there isn't "something" floating inside the cooling system that is blocking the heat valve, and causing other issues as well. All on today's exploratory list.
Thoughts and experience welcome
Quick details: stock 13BT, 200000km, a440...