87propaganda

every time the car is driven for a while the coolant keeps going to the reservoir and idk whats going on do i need a rebuild already?

nicdchris

iTrader: (1)

When an engine gets hot, the coolant expands into the reservoir, when you turn the car off, the coolant contracts and fills the void with what was in the reservoir.

This design forces air out, and coolant in. If you keep ending up with copious amounts of air (as in setting off the low-coolant alarm) after a drive, and the coolant ending up in the reservoir, you either have a very unusual leak, or are in need of a coolant seal, which requires pulling the engine.

fc3sls1

It sounds to me like your rad cap is worn out. Over time the spring which regulates the cooling system pressure wears out.

Aaron Cake

iTrader: (1)

Bad rad cap or a pinhole leak in the hose that leads from the rad cap to the coolant recovery bottle.

87propaganda

i have them both replaced but still doing it i bought them from autozone is that good or bad

Gringo Grande

iTrader: (97)

If it is the Stant cap, get rid of it. They were notorious at one time for causing issues with the FC's in particular IIRC.

87propaganda

where should i buy them at dealer shop ?

fc3sls1

Oem is best. The only other option is a aftermarket brands such as HKS, Greddy and so on.

Aaron Cake

iTrader: (1)

Stant thermostats seem to go bad, not Stant rad caps.

A good quality name brand rad cap of the appropriate pressure will be fine.

Now if you are experiencing these problems even after the replacements, then do a "bubble test". With the car stone cold, remove the coolant filler cap and start it up. Do you see a steady stream of bubbles from inside the engine? Now rev the engine. Do the bubbles increase? If the answers are "yes" then that is a strong indication of a bad coolant o-ring. Unfortunately, this requires a complete engine teardown to fix (think "blown head gasket").