Whoop92
Member
Hi All,
Here's what my quiet weekend turned into. My spouse drove our '99 5.4 Expy with about 160k miles to visit relatives about 200 miles away. On the way there it started overheating. By adding about 1.5 gallons of coolant and turning the cabin heat on high it made it to the relatives' house.
That's all the info I have. There is a leak somewhere but I don't have any information on where it is coming from. I can't remember when nor if the water pump or thermostat have been replaced.
Obviously, there is a problem and I'm currently planning to visit the relatives to fix the Expy. I'm trying to figure out what the most probable problem is so I take all the needed tools and parts.
Full disclosure, about two months ago it overheated on a road trip with my daughter. The car store scan tool said it was a bad thermostat but the local kind mechanic said that it was the very low oil that hadn't been checked like it should. Oil was added and the truck didn't have any problems for the rest of the road trip. No heating problems since then until now.
My hopeful guess is that the thermostat is busted.
My probable guess is the water pump has finally given up the ghost.
My nightmare is that there is something else wrong that I can't figure out.
What say y'all? Any ideas on what else could be wrong or tips on how to diagnose or fix these items?
Thanks for your help!
Here's what my quiet weekend turned into. My spouse drove our '99 5.4 Expy with about 160k miles to visit relatives about 200 miles away. On the way there it started overheating. By adding about 1.5 gallons of coolant and turning the cabin heat on high it made it to the relatives' house.
That's all the info I have. There is a leak somewhere but I don't have any information on where it is coming from. I can't remember when nor if the water pump or thermostat have been replaced.
Obviously, there is a problem and I'm currently planning to visit the relatives to fix the Expy. I'm trying to figure out what the most probable problem is so I take all the needed tools and parts.
Full disclosure, about two months ago it overheated on a road trip with my daughter. The car store scan tool said it was a bad thermostat but the local kind mechanic said that it was the very low oil that hadn't been checked like it should. Oil was added and the truck didn't have any problems for the rest of the road trip. No heating problems since then until now.
My hopeful guess is that the thermostat is busted.
My probable guess is the water pump has finally given up the ghost.
My nightmare is that there is something else wrong that I can't figure out.
What say y'all? Any ideas on what else could be wrong or tips on how to diagnose or fix these items?
Thanks for your help!