18 Nov 06, 09:36 pm
Tried to go to Jake's run today but the Hummer decided otherwise, it wanted to run at 280 instead of the normal 190, replaced the thermostat and switched back to rotella diesel engine oil instead of arctic weight oil, this got the temps down to 240.. still too hot....
Update:
I do believe it's a water pump issue, I just drove it for over an hour and it is entirely related to speed, the faster I go, the hotter it runs. Driving 50 on the highway gets the temp up to 225, increase to 60 and it goes up to 240, driving back onto the Army base where speed limits are 25-35, it goes back down to 210.
I raised the hood yet again (for the 8th time or so today) and checked the water pump, it seems to have a slight amount of play in the pulley, if I grab the fan and wiggle it, the water pump pulley moves ever so slightly. I don't think there should be any play at all. So even though I changed the water pump 3 years ago... looks like it's time to do it again.
Update:
I do believe it's a water pump issue, I just drove it for over an hour and it is entirely related to speed, the faster I go, the hotter it runs. Driving 50 on the highway gets the temp up to 225, increase to 60 and it goes up to 240, driving back onto the Army base where speed limits are 25-35, it goes back down to 210.
I raised the hood yet again (for the 8th time or so today) and checked the water pump, it seems to have a slight amount of play in the pulley, if I grab the fan and wiggle it, the water pump pulley moves ever so slightly. I don't think there should be any play at all. So even though I changed the water pump 3 years ago... looks like it's time to do it again.