high labor for water pump/thermostat?

[bobaachaar]

Originally Posted by JFP in PA

Mistake. The factory impeller is plastic for a reason: all pumps wear and begin to wobble, when they do, the plastic impeller hits the rear of the pump housing and breaks off, but the metal impeller starts grinding away the rear of the housing, which is part of the engine case, filling the system with metal filings and increasing the distance between the impeller and the case to the point it reduces coolant flow. This damage cannot be repaired, and why the factory uses composite impeller pumps.............

what do i do? the mechanic replaced it with brass without asking which one i wanted. do i go back and ask to replace with oem?

[JFP in PA]

Originally Posted by bobaachaar

what do i do? the mechanic replaced it with brass without asking which one i wanted. do i go back and ask to replace with oem?

That is totally your call, I am only telling what I know from years of working on customer's cars, seeing what works and what doesn't, and communicating with Porsche engineers. How you proceed is up to you............

[bobaachaar]

Originally Posted by JFP in PA

That is totally your call, I am only telling what I know from years of working on customer's cars, seeing what works and what doesn't, and communicating with Porsche engineers. How you proceed is up to you............

do you think if i leave it and replace it after 40-50k miles it should be fine?

[JFP in PA]

Originally Posted by bobaachaar

do you think if i leave it and replace it after 40-50k miles it should be fine?

No idea. But this is what kind of damage metal impellers cause when the blades hit the case:

[Gilles]

Sorry to hear this bobaachaar, but unless your mechanic accepts replacing the pump with the right one.. I would offer buying the OEM pump and he puts the labor to replace (after all it was his fault..)

If this does not work out, perhaps now this is the time to learn to replace your water pump with the correct one, as long as you save the new precious coolant your additional cost would be for the OEM water pump.
Replacing the water pump is not complicated as long as you take your time, there are plenty to DYI advise on this forum.

I would volunteer to help you but Orange County is a long way from San Francisco.. perhaps another member that lives closer?
.

[Frodo]

Originally Posted by Gilles

Sorry to hear this bobaachaar, but unless your mechanic accepts replacing the pump with the right one.. I would offer buying the OEM pump and he puts the labor to replace (after all it was his fault..)
.

The problem here is that—presumably—the pump he installed is working just fine. Unless there was some sort of agreement that a specific type of water pump be used, I’m thinking this is gonna be a tough assignment.

Concepts like his not having used “the correct one” and the problem (if the mechanic is even willing to concede there is a problem) is “his fault” may not go over well. But I could be wrong, and I suppose it’s worth a try.

I’d say give it a shot. If that doesn’t work, at a minimum ask the guy what brand of pump he used, and what the typical lifespan of that replacement tends to be. Then make sure you at least replace it well before that time has run.

[nuvolari]

Originally Posted by JFP in PA

No idea. But this is what kind of damage metal impellers cause when the blades hit the case:

Hey JFP, and is the problem then that with the gouging now, the new pump won't flow coolant as well due to the clearance or is there a danger of the pump grinding into an oil passage or other leak? And how does this damage manifest itself in the future? Overheating? How long does this type of damage take to occur on a failing pump? I realize there are variables but just trying to understand if once it starts, the driver can hear noise and react or does it happen too quickly to react or so slowly that nothing is heard?

Also, how likely are the broken off plastic impeller bits to cause problems in the cooling system? And if so, what is the cure to removing them for shops such as yourself? (I dread to think but still would like to know the solution if any, whether it's a flush or requires engine disassembly that is not cost effective.)

Many thanks.

[Rob175]

For what it's worth, 4 years ago, I had my water pump replaced by my "indy" Porsche shop because it was leaking (20 year old original water pump).....I was charged $1,200 for the pump, labor and coolant. (Chicago area)

[MikeMcMo]

Originally Posted by Rob175

For what it's worth, 4 years ago, I had my water pump replaced by my "indy" Porsche shop because it was leaking (20 year old original water pump).....I was charged $1,200 for the pump, labor and coolant. (Chicago area)

Hey,
Can you share a name/phone # for your indy? I need to get a key coded if possible, and get some other work done...

[Rob175]

PM sent. Good luck.