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Sandwedge,you have had some bad luck with these cars. Oil pumps, PDK, etc. I feel you bro. In my case, everything has been the opposite.
I think you meant to say water pump rather than oil pump but yes, three events (PDK, water pump and HPFP), all which left me stranded seems like a lot of bad luck for cars that all have been maintained meticulously and always on schedule. The irony here is that the most reliable of the three 997's I've owned was the -06 C4S. Nothing but small stuff during 40,000 miles on that car. All the big items have been on the supposedly refined and improved .2 cars. Go figure....
Previous style water pumps (the ones that cause the problems) have open fins. The fins are exposed and can be broken off. The 997.2 pump fins have a circular member connecting them all together. It is one molded piece meant to prevent individual fins from contacting the block. This ring would protect the fins if the pump was failing and keep them connected to each other.
Previous style water pumps (the ones that cause the problems) have open fins. The fins are exposed and can be broken off. The 997.2 pump fins have a circular member connecting them all together. It is one molded piece meant to prevent individual fins from contacting the block. This ring would protect the fins if the pump was failing and keep them connected to each other.
Pre emptive changing of the water pump on the 997.1 understandable. Known problem. Not so sure on the 997.2. I think the fail rate probably similar to every other production car. If you are someone who changes water pumps on your daily driver every 40k miles then go for it as it must give you peace of mind. The other mentality is fix what's broken. You can drive yourself crazy trying to do pre emptive strikes and "guess" what's going to break next.
During 8/16 I had similar issues with my C4, and experienced a coolant leak at the thermostat housing. Due to the age of the car and lack of 'intel' on the rest of that system I took the opportunity to replace all the coolant hoses I could, as they looked original and were cracking, plus the older water pump and thermostat/ t-stat housing, serpentine belt and idler wheels. Most of it needs to come off to get to the lower coolant hoses. Fun 'adventure' and a confidence builder for working on and learning the car, and realizing I could handle AOS, or whatever came my way later. I had a few trials and tribulations surrounding this series of events and subsequent DIY repairs. So 'while you're in there' inspect everything methodically and save yourself a headache or three down the road.
