[Gopal]

Hello

Can anyone tell me the size of bolt for holding compression hose sub assembly in sienna 2008 FWD 3.5L LE model? Does it cause over heating by any chance if it is missed?

my Van has gone through, overheating, stall, random misfires, gross leak. I have replaced every part that u name. Ignition coils, spark plugs, fuel injectors, alternator, starter, battery and finally fuel pressure regulator. All of that cleared. After all this, overheating came back with steam coming out of radiator cap while the van is in idle for 5 mins. Mechanic is saying there maybe leak in radiator. Please help.

 

[sixto]

Overheats within 5 min of cold start? You might have a blown head gasket pressurizing the cooling system so coolant can’t circulate.

You mention overheating but not loss of coolant. If the radiator is leaking, you’ll lose coolant. Simple cooling system pressure test will tell you if there are leaks. Blown head gasket can also cause coolant loss if there’s enough pressure to push past the radiator cap. How hot is the coolant in the reservoir when there’s steam from the radiator cap?

Sixto
‘04 LE FWD 206K miles