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Water Pump Replacement

My '84 NA is continuing to run hot. All was well until the lower radiator hose failed. The repair shop (a Honda Dealer) replaced the hose and thermostat. Then the car would get hot in stop and go and okay while cruising above 45mph.

During other work a Porshe shop told me that was the wrong thermostat and they replaced it. Now it runs straight up in the middle at stop and go but runs a little hot when cruising above 50mph.

I have checked both fans and they cycle on and off like they should and appear to be running at full speed.

Also, the overflow tank has been replaced and the pressure cap.

So, 35K miles ago the PO replaced the water pump with a re-built (source unknown).

I am suspecting a bad water pump that went gesprengt when the hose went.

So, to make a long story short (too late) does anyone have the proceedures for replacing the water pump?

Is this something the average home mechanic can tackle or do you need six specialized tools, a lift, two rosaries, and an German-English dictionary to do?

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Old 04-16-2004, 11:50 AM
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If it is not in the red... I would not worry about it....

unless the waterpump is leaking or making noise I would not bother replacing. The rebuilt ones are just as good as oem IMO.
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Old 04-16-2004, 12:07 PM
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Why oh why did you let Honda techs touch your Porsche?
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Old 04-16-2004, 02:04 PM
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Quote:
I am suspecting a bad water pump that went gesprengt when the hose went.

Well, without water and letting the water pump running dry could damage the water pump seal, but you could tell as soon you run the engine with full water in the radiator, The water will be leaking out from the water pump seal if it got damage.

So, It's not leaking from the water pump and I'm 100% it's fine. I did replace my water pump and if only Porsche had a way to take off the back timing belt cover plate without taking EVERYTHING in the front of the engine to get to the water pump, This job would be much easier.


Since your cooling fan are cycling on, I'm most positive it's the thermostat opening slowly. I got a feeling the Honda mechanics couldn't take out the old thermostat. There is a strong lock clip to take out the thermostat.

Wait a minute, Another thing it could be is AIR in your cooling system. You have to bleed more air out. You can do it yourself. Try this first.

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Last edited by 88_944; 04-16-2004 at 08:11 PM..
Old 04-16-2004, 08:06 PM
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Quote:
Originally posted by Porsche-O-Phile
Why oh why did you let Honda techs touch your Porsche?
It went out while at work 35 miles from home. There were three options for repair.
1. Do it myself in the parking lot.
2. Corner Gas/Convenience/mechanic (the guy could not even spell Porsche)
3. Honda dealer. At least they had real by god mechanics.
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Old 04-19-2004, 05:30 AM
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Quote:
Originally posted by 88_944




Wait a minute, Another thing it could be is AIR in your cooling system. You have to bleed more air out. You can do it yourself. Try this first.

I have bled the system so many times the Red Cross wants to give my car a pin.
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Old 04-19-2004, 05:32 AM
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on this topic their is a link diagraming where to cut rear timing cover into 2-piece; facilitating easier water pump change-outs

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Old 04-19-2004, 05:49 AM
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