Ye Ol coolant loss mystery...

[Chuck Schick]

2014 1.8 sedan.

Over the last year or so, the level has gone down in the clear tank. Been marking with a sharpy. Down about an inch or so.

Dealer did a pressure test, nothing.

I am going to do an oil change and send in a sample to check for coolant loss.

 

[Smartdave]

How many miles?

My loss was due to the thermostat housing. At 145k on the clock and on my second thermostat




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[Chuck Schick]

How many miles?

My loss was due to the thermostat housing. At 145k on the clock and on my second thermostat




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25,000 miles

 

[Smartdave]

Ohhh that should not be happening then


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[Natesriv]

waterpump....
waterpump..................
waterpump........................

get under car on passenger side, look for a hint of green residue or even a green drop on the bottom of the waterpump... (heck it may be orange too)

 

[Smartdave]

Oem is orangeb


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[Chuck Schick]

Oil sample back. Everything normal, no coolant in oil. Viscosity was a little low 8.5. Had 4500 miles with Valvoline synthetic?

I will change the cap.

 

[Ponchoguy]

Oil sample back. Everything normal, no coolant in oil. Viscosity was a little low 8.5. Had 4500 miles with Valvoline synthetic?

I will change the cap.

Check your coolant surge tank carefully. Mine developed a crack at the bottom and caused a coolant loss (see my thread on it). I changed the surge tank and cap with OEM GM parts off Ebay ($30 total) earlier this week and so far so good.

 

[LizzyTheLez]

2014 1.8 sedan.

Over the last year or so, the level has gone down in the clear tank. Been marking with a sharpy. Down about an inch or so.

Dealer did a pressure test, nothing.

I am going to do an oil change and send in a sample to check for coolant loss.

only replying if someone else has this problem.
on the throttle body this is 2 pipes inlet and outlet will have to move the air filter to see it well but it will look like it is still connected but inside is what is broke
could only fine both of the pipes on amazon.