Menu toggle

Water pump failure modes?

P

POR1983

New member
I am in the process of changing my 1983 944 cam and balance belts, I have a replacement second hand water pump that is only 4 years old and in good condition that i was intending to fit at the same time, however now that I have removed the belts i have found that the pump currently fitted to the car seems to be in good order, the drive wheel turns as smoothly as the drive wheel on the replacement pump and there is no lateral play, so now I am wondering is it worthwhile changing the pump?, i have owned the car for approx 10 years so the currently fitted pump is at least that old but i don't have any record of a replacement pump being fitted by previous owners, it is the modded pump with the belt guard so i guess it was replaced at some point, the car has done 100k miles so the pump has done somewhat less i guess, what are the failure modes with these pumps? do they just leak or can they seize and take out the cam belt?.
 
The general advice seems to be to replace the water pump at every other belt replacement. Personally, I wouldn't bother fitting a second hand pump - fit a new one and know it's good for at least the next 6 years or so...

When my pump failed it was a gradual failure, with leaking coolant.

 
As Giles says - I wouldn't fit a 4 year old waterpump; for the work and hassle involved in changing it, I'd bin it and fit a new one.

Sorry, probably not what you wanted to hear.


Oli.
 
I had a 142 Volvo that the water pump failed on....no noise, no leaks, no wobbling...but the impeller was eroded down to where it could not pump sufficient water to keep the engine from overheating. On the Volvo - changing the water pump is a 20 minute job and if you are careful, you won't even get wet [:D]

So - even though your spare may feel good, its not worth using - the work involved to change it warrants a new pump.
 
You must log in or register to reply here.

Posts made and opinions expressed are those of the individual forum members

Use of the Forum is subject to the Terms and Conditions

Disclaimer

The opinions expressed on this site are not necessarily those of the Club, who shall have no liability in respect of them or the accuracy of the content. The Club assumes no responsibility for any effects arising from errors or omissions.

Porsche Club Great Britain gives no warranties, guarantees or assurances and makes no representations or recommendations regarding any goods or services advertised on this site. It is the responsibility of visitors to satisfy themselves that goods and/or services supplied by any advertiser are bona fide and in no instance can the Porsche Club Great Britain be held responsible.

When responding to advertisements please ensure that you satisfy yourself of any applicable call charges on numbers not prefixed by usual "landline" STD Codes. Information can be obtained from the operator or the white pages. Before giving out ANY information regarding cars, or any other items for sale, please satisfy yourself that any potential purchaser is bona fide.

Directors of the Board of Porsche Club GB, Club Office Staff, Register Secretaries and Regional Organisers are often requested by Club members to provide information on matters connected with their cars and other matters referred to in the Club Rules. Such information, advice and assistance provided by such persons is given in good faith and is based on the personal experience and knowledge of the individual concerned.

Neither Porsche Club GB, nor any of the aforementioned, shall be under any liability in respect of any such information, advice or assistance given to members. Members are advised to consult qualified specialists for information, advice and assistance on matters connected with their cars at all times.

Porsche
Lockton
Pirelli
Officially approved
Oracle Finance
WEX Esso
Collecting Cars
Back
Top