Reservoir won't hold coolant

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Oct 9, 2024 | 06:52 AM

#16

Hfrost915

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From: SC

Quote:

Originally Posted by Lwerewolf

So what you're saying is, you fill it up, you don't drive it and it just "goes away"? If so - replace reservoir.

No. the coolant only comes out when I'm driving

Oct 9, 2024 | 06:57 AM

#17

Hfrost915

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From: SC

Quote:

Originally Posted by mspearl95

pull the reservoir, fill it with water, and let it sit for a few hours and see if is leaking. could have a crack along the seam or something that isn't obvious upon inspection.

Since it only comes out while driving & not sitting still... should I still try removing reservoir & filling it & watch for leaks. Or would that only be good to check if it leaked while sitting still?

Oct 9, 2024 | 07:03 AM

#18

Hfrost915

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From: SC

Quote:

Originally Posted by Lwerewolf

So what you're saying is, you fill it up, you don't drive it and it just "goes away"? If so - replace reservoir.

I believe it is coming out of the run off tube connected to the top of the reservoir when I hit the gas. It's like it's forcing it out of the tube

Oct 9, 2024 | 07:10 AM

#19

Hfrost915

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From: SC

Quote:

Originally Posted by mspearl95

but will any of those issues drain the reservoir even if the engine hasn't been run?

The coolant only comes out when im driving, not sitting still. It seems like it comes out of the little run off hose attached to the top of the reservoir when I hit the gas.

Oct 9, 2024 | 09:49 AM

#20

Hfrost915

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From: SC

Quote:

Originally Posted by ibidu1

Have you ever replaced your water pump? If not I would replace it just incase, because it is a fail item on our cars that can potentially overheat the engine. Once you overheat these engines the cylinder heads warp. Usually coolant leaks behind the waterpump pulley, it builds up pink slime on the backside of the pulley.

Like Lex2k suggested the radiator cap I would replace aswell. I would also clean the area around the inside of the cap. Aswell as the thermostat, no need to go oem for all these parts. You can go on rockauto purchase (Aisin water pump under $100, denso thermostat, oem radiator cap, idler pulley, dayco serpentine belt)

Im not the type of person to say replace many parts that are still good, but in this case with cooling its better insurance and peace of mind just to knock it out and get over it. If you look recently a member blew up their engine due to over heat.

I will order definitely look into order all those. Thank you so much. Now looking back, I do remember since purchasing the car 3 years ago, seeing pink thick stuff. Do I also need to replace timing belt/chain?

Oct 9, 2024 | 11:10 AM

#21

Lwerewolf

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From: Sofia

Way, way, way too many messages. Anyways:

Quote:

Originally Posted by Hfrost915

The coolant only comes out when im driving, not sitting still.

Replace the water pump AND cap, unless there are clear indicators that it's from the radiator (for example) - and even then I'd replace the pump and cap just in case. Have a magnet pick ready in order to catch any pieces that might fall off the old cap, in case it has disintegrated. Driving a car with any amount of measurable beyond doubt coolant loss is absolutely NOT recommended. Hope that there are no damaged head gaskets.

Oct 9, 2024 | 06:41 PM

#22

mspearl95

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From: or

Quote:

Originally Posted by Hfrost915

The coolant only comes out when im driving, not sitting still. It seems like it comes out of the little run off hose attached to the top of the reservoir when I hit the gas.

if it's coming out when you hit the gas, it may mean that your are getting pressure into the cooling system, and could be a sign of a bad head gasket.

Oct 12, 2024 | 01:43 AM

#23

ibidu1

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From: FL

Quote:

Originally Posted by Hfrost915

Should i also service the timing chain while doing water pump? I always thought u were suppose to, but in a previous lexus form a few years ago. I was told you didn't need to service timing chain in these cars so not sure 🤔

Timing chains generally do not need to be service, unless you have crazy high miles and have crank and camshaft codes.

Oct 12, 2024 | 02:00 AM

#24

Oro

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From: wa

Quote:

Originally Posted by mspearl95

if it's coming out when you hit the gas, it may mean that your are getting pressure into the cooling system, and could be a sign of a bad head gasket.

The next step is this, checking for an hg leak.

Oct 12, 2024 | 02:35 AM

#25

ibidu1

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From: FL

Quote:

Originally Posted by mspearl95

if it's coming out when you hit the gas, it may mean that your are getting pressure into the cooling system, and could be a sign of a bad head gasket.

Your are right! but stuff like this is usually obvious, the coolant gets discolored, coolant hoses swell up, loss in performance, mis fires etc.

An easy way to test for this is to start the car while cold and open the radiator cap before the coolant heats up. If theres pressure from a leaking head gasket coolant would spill out or shoot out.