Do I Need to Replace Water Pump?

[skeck]

Been having some pink crusty crud showing up on the underside of the passenger side hood and it is coming from the hose connection circled in the second photo. I found some similar posts on here stating that this means I should replace the water pump. I bought a new one and just want to verify that this is what i need to do. I have 80,000 miles on my car and this is the original pump. Any assistance is appreciated. Thank you in advance.

[RedRide]

That appears to be an AC hose.

[Altitude]

That's the tell-tale sign that your pump is on its way out.

[skeck]

Good to know I didn't waste my money buying a new one...thanks

[ilikerice]

yep yep.. water pump leaking. Good DIY somewhere here also.. good luck and get an aftermarket one.

[BLH]

Starting to fail.
Mine had the same pink spray from the front to back on the inside of the hood.

[tyrone_yaris]

I was just wondering since im a newbie, what happens if one doesnt know it and the water pump fails? Will the engine stall?

[Ratz]

I was just wondering since im a newbie, what happens if one doesnt know it and the water pump fails? Will the engine stall?

Eventually, if signs are ignored.

If you fail to notice the pink stuff under the hood (could be the green colour if coolant was changed). results gradual loss of coolant.

If the loss of coolant reaches the low level where it can no longer circulate and cool engine the engine temperature will rise and turn on the engine hot indicator light on the instrument cluster.

If time when engine light indicator is on and immediate action is not taken, (like pulling over and shutting down the engine) usually two to five minutes (rough idea) and that depends on the load of the engine which at this point is overheating. If ignored a possible warpage to cylinder head and damage to head gasket may occur.

If ignored further the remains of the engine coolant will reach boiling point and one will see the steam rising from under the hood. This is the last chance.

If ignored the oil will be diluted by heating to the point of loosing lubrication and pistons will seize in the cylinders and bearing will melt to each other and engine will stall, stop or seizes to function.

End of sequence. (New engine required).:thumbdown:

[skeck]

Got it replaced yesterday...took me a good 6 hours due to my extra cautious approach, but it was a success. Not a fun DIY job, but well worth the money saved.

[Ratz]

Congratulations! :thumbup: Does not sound like DIY for on the side of the road job.

[YAR1S]

Hmmm my case is differnt... I had very mild pink spray on my hood. I noticed a very loud rattle at idle around 90k. Had it checked out by toyota after it got worse coming back from a 8 hour road trip... they said the bearings in my water pump where shot and it was only a matter of time before it failed... luckily I filled it up with coolant before my trip... by the time I got back I think it saved my poor yaris.

800ish$ to repair :(

[marcus]

still cant figure out how toyota manage to disable my a/c system after they replaced the water pump.. a/c not turning on , fuse is ok but seems like im not getting power to the a/c compressor..go figure..

[CTScott]

still cant figure out how toyota manage to disable my a/c system after they replaced the water pump.. a/c not turning on , fuse is ok but seems like im not getting power to the a/c compressor..go figure..

Check to see if they plugged the connector back into the compressor.

[marcus]

Check to see if they plugged the connector back into the compressor.

yes they did..already rechecked it also checked fuse which was good still got light on the ac button..compressor click if i ran power directly from the battery so im at lost on what i am missing..too cold to fix right now waiting for a warmer weather..

[CTScott]

yes they did..already rechecked it also checked fuse which was good still got light on the ac button..compressor click if i ran power directly from the battery so im at lost on what i am missing..too cold to fix right now waiting for a warmer weather..

The AC ECU won't activate the solenoid for the compressor if there is an issue with the pressure (too high or too low), so there is probably a good chance that they nicked or flexed one of the aluminum tubes enough to cause the system to vent.

[marcus]

The AC ECU won't activate the solenoid for the compressor if there is an issue with the pressure (too high or too low), so there is probably a good chance that they nicked or flexed one of the aluminum tubes enough to cause the system to vent.

oh yeah i also check that as well toyota said its full but cant get pressure since i cant get the compressor to work..

[CTScott]

oh yeah i also check that as well toyota said its full but cant get pressure since i cant get the compressor to work..

If they plug the TechStream tool into the car, the AC ECU will tell them why it isn't happy.

[marcus]

If they plug the TechStream tool into the car, the AC ECU will tell them why it isn't happy.

thats what needs to be done but they gonna charge me just for them to do that although i have a friend that works there i just have to have him take my car for a day.. thanks scott.

[CTScott]

thats what needs to be done but they gonna charge me just for them to do that although i have a friend that works there i just have to have him take my car for a day.. thanks scott.

Below is the kind of stuff it will tell you. This is a capture from my TechStream tool talking to my Yaris test bench. The AC ECU only has the ambient temp sensor connected, so I throw DTCs for the evaporator temp and the refrigerant pressure.

45405

45406

[marcus]

thats so cool... would it detect pressure without compressor running though??

[CTScott]

thats so cool... would it detect pressure without compressor running though??

Yes. Here's a cap from my 2009 with the engine not running and AC off - 61.76 PSI

45407

[marcus]

gotcha!!! ill will look into this as soon as it get warmer..

[bankrobber]

At what temperature does "Hot" engine light come on