Technical bulletin 9110: Unnecessary replacement of coolant pumps
08-26-2011 | 07:06 PM
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Technical bulletin 9110: Unnecessary replacement of coolant pumps
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"Parts testing revealed no defects on a high number of coolant pumps replaced for leaks.
Sweat at sealing areas, usually white grey or green grey depending on coolant color, does not justify the replacement of the coolant pump. A small amount of coolant loss from the breather hole of the coolant pump especially during approximately the first 1000 miles of operation is normal. The coolant pump only needs replacement if there is a noticeable leak, like coolant on the garage floor or if the coolant level drops below the minimum mark with a cold engine because of coolant pump leaks."
"Parts testing revealed no defects on a high number of coolant pumps replaced for leaks.
Sweat at sealing areas, usually white grey or green grey depending on coolant color, does not justify the replacement of the coolant pump. A small amount of coolant loss from the breather hole of the coolant pump especially during approximately the first 1000 miles of operation is normal. The coolant pump only needs replacement if there is a noticeable leak, like coolant on the garage floor or if the coolant level drops below the minimum mark with a cold engine because of coolant pump leaks."
08-26-2011 | 09:24 PM
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From: Double Oak, TX
Water Pumps should be replaced every 10,000 miles or 12 months which ever comes sooner - you know it makes sense 8>)
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928 Owners are ".....a secret sect of quietly assured Porsche pragmatists who in near anonymity appreciate the prodigious, easy going prowess of the 928."
Does it have the "Do It Yourself" manual transmission, or the superior "Fully Equipped by Porsche" Automatic Transmission?
George Layton March 2014928 Owners are ".....a secret sect of quietly assured Porsche pragmatists who in near anonymity appreciate the prodigious, easy going prowess of the 928."
