Hello everyone, I've posted on this site several times about this issue and I've replaced the radiator, thermostat and housing, upper and lower hoses, coolant temp sensor, expantion tank, transmission thermostat, the whole cooling system and fan clutch.
The only thing I didn't replace was the water pump the previous owner adviced me she had changed it, the vehicle has never overheated.
My question(s) are can a bad/going bad water pump cause the expantion tank cap to allow coolant to excape? It seems to only run over when the vehicle is being drove hard. Like with a heavy foot.
With the cap off in the morning after its sat all night long and I crank it up the fluid stays in the tank. It's not ever gushing out.
Im clueless on what to do next.
The only thing I didn't replace was the water pump the previous owner adviced me she had changed it, the vehicle has never overheated.
My question(s) are can a bad/going bad water pump cause the expantion tank cap to allow coolant to excape? It seems to only run over when the vehicle is being drove hard. Like with a heavy foot.
With the cap off in the morning after its sat all night long and I crank it up the fluid stays in the tank. It's not ever gushing out.
Im clueless on what to do next.
2004 BMW 325i coolant issue
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