2002 Toyota Sequoia Ltd.
199,530 miles
Automatic
Very confusing scenario, because I changed my thermostat a few weeks ago and I do not remember removing my upper coolant hose. Anyways, last night, as I was parking my SUV on a bumpy incline, a bunch of steam is spewing out of the hood. I go to look and the upper coolant hose is sitting completely off the radiator. Could there be some erroneous issue I should be aware of? Like a clogged overflow tank? I would like to rule out any stupidity before I fill my coolant again as I lost a lot in the 10 seconds it came off and was running
It just sounds like the clamp on the upper hose let go. Did you make sure to get a new radiator cap? Lucky you blew a hose off and not a head gasket.
I actually replaced the radiator cap when I got it. Yes I was so worried that I had overheated until I saw the hose un-clamped. Very relieving
All of the cars I've worked on I've always removed the upper radiator hose before removing the thermostat housing. Removing the housing with the hose still attached could have repositioned the hose and hose clamp to where the pressure could push the hose off. But there's probably only 16 PSI so it could have simply fell off. Just my guess.
This is actually a very good picture of what happened because I was finagling in between the the upper coolant hose and the power steering. I imagine I whacked it at some point and completely forgot
How many times have you driven it and how far since replacing the thermostat? If you put the thermostat in backwards, you would overheat and build up a lot of pressure.
I can assure that it was not put in the backwards. I had driven it about 6 times since I changed the thermostat. It never actually overheated though. The steam was from the already warm engine and the coolant shaking hands. I was monitoring the coolant temp and it stayed in the middle. It only started to steam when I hit a bump on the incline to my parking space
In that case, you should be good to go with clamping the hose on good and refilling the coolant. Good luck.
always use the screw type clamps. not the cheap spring jobs
why? screw clamps get loose as the rubber shrinks. Spring clamps always maintain tension.