1998 Ford Explorer sudden antifreeze leak

[CynthiaK]

Hi,

Today my vehicle had a sudden, substantial anti-freeze leak.
It is dripping from somewhere near the rear of the engine on the passenger side but cannot see the source.
Any suggestions?

 

[oo7]

Probably the lower thermostat housing o-ring is shot. If that is the case, buy the aluminum replacement and the gasket set.

 

[Pete Deering]

Probably the lower thermostat housing o-ring is shot. If that is the case, buy the aluminum replacement and the gasket set.

Check the heater control valve? Replaced my twice so far.

 

[C420sailor]

Check in the valley between the cylinders with a flashlight. If there is coolant there and you have a SOHC, it’s the thermostat housing.

 

[Mbrooks420]

Second the aluminum housing. I know it’s much more spendy, but you’ll eventually end up buying it anyways.

 

[Pete Deering]

Second the aluminum housing. I know it’s much more spendy, but you’ll eventually end up buying it anyways.

Second the aluminum housing. I know it’s much more spendy, but you’ll eventually end up buying it anyways.

She has a 1998 Explorer XLT 4L OHV

 

[Turdle]

dripping behind passenger front tire could be heater core.

 

[fast_dave]

2ndwhat @Pete Deering said = Heater Control Valve.

 

[Jamat626]

Hi,

Today my vehicle had a sudden, substantial anti-freeze leak.
It is dripping from somewhere near the rear of the engine on the passenger side but cannot see the source.
Any suggestions?