What's this noise?
#1
Instructor
Thread Starter
What's this noise?
Ok peanut gallery.....
2006 997.1. 95K miles, no issues, diligently maintained. Presumably larger bearing given build date / VIN / Engine #. Water pump replaced 40K miles ago. No leaks.
Got in car (to go to dentist of all places) and heard this rattle. Seems to be coming from drivers side of engine bay. Increases in speed with RPM. Gonna flatbed to Indy tomorrow. Ideas?
2006 997.1. 95K miles, no issues, diligently maintained. Presumably larger bearing given build date / VIN / Engine #. Water pump replaced 40K miles ago. No leaks.
Got in car (to go to dentist of all places) and heard this rattle. Seems to be coming from drivers side of engine bay. Increases in speed with RPM. Gonna flatbed to Indy tomorrow. Ideas?
#4
Remove the serpentine belt. Rotate all the pulleys to see if any are loose or noisy. Start the engine briefly with the belt off and see if the noise returns. This test will isolate the noise to one of the accessories driven by the belt or to the engine itself.
#5
Instructor
Thread Starter
Waiting for flatbed to tow to indy, not gonna take any chances. I'm thinking it's gonna be the water pump.
#7
Instructor
Thread Starter
It was the water pump. Bearing loose. Impeller intact. They also replaced the tensioner and idler pulleys. Not a pretty bill.
I'm now on my fourth water pump. 1st one failed (leak) at 57K miles. Second one started leaking a week after installation and was replaced right away. #3 (this one) lasted just shy of 40K miles. I don't know if play in the other pulleys exacerbated the failure.
I'm now on my fourth water pump. 1st one failed (leak) at 57K miles. Second one started leaking a week after installation and was replaced right away. #3 (this one) lasted just shy of 40K miles. I don't know if play in the other pulleys exacerbated the failure.
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#8
Honestly that's good news. My first instinct was a bank two cylinder issue with the noise coming out the driver's side exhaust. That would have been an expensive engine repair!
#9
Instructor
Thread Starter
Originally Posted by semicycler
Honestly that's good news. My first instinct was a bank two cylinder issue with the noise coming out the driver's side exhaust.
#12
RL Community Team
Rennlist Member
Rennlist Member
It was the water pump. Bearing loose. Impeller intact. They also replaced the tensioner and idler pulleys. Not a pretty bill.
I'm now on my fourth water pump. 1st one failed (leak) at 57K miles. Second one started leaking a week after installation and was replaced right away. #3 (this one) lasted just shy of 40K miles. I don't know if play in the other pulleys exacerbated the failure.
I'm now on my fourth water pump. 1st one failed (leak) at 57K miles. Second one started leaking a week after installation and was replaced right away. #3 (this one) lasted just shy of 40K miles. I don't know if play in the other pulleys exacerbated the failure.
#13
Instructor
Thread Starter
Originally Posted by Petza914
4 water pumps in 100k miles is an impressive record - like double the norm. Hoping this one sees you through for the next 40k-50k miles. Did you verify that they installed one with a plastic impeller and not a metal one?
#14
RL Community Team
Rennlist Member
Rennlist Member
Yes, that's true, and you're right 40-45k miles is what I consider the PM service interval on them.