Engine Noise

[Lee Quave]

I have a 1999 C2 with 58,000 miles and I hear a chirping or cricket like sound coming from the engine compartment at idle and low RPMs with or without the AC on. I changed the poly belt but that didn’t stop the sound. Does anyone have an idea what could cause this and if the fix is a DIY and if not how much would I expect to spend to fix it the local Porsche dealership?

Thanks,

Lee

[dp996]

I have a 1999 C2 with 58,000 miles and I hear a chirping or cricket like sound coming from the engine compartment at idle and low RPMs with or without the AC on. I changed the poly belt but that didn’t stop the sound. Does anyone have an idea what could cause this and if the fix is a DIY and if not how much would I expect to spend to fix it the local Porsche dealership?

Thanks,

Lee

Lee,

Note my recent post on the identical symptom. You may even note that it makes one final chirp as you shut off the engine. Quite the coincidence I'd say. Even more coincidental is that we essentially have the same model/year/mileage. I found the noise is caused by a unique failure of the oil separator. Accesibility is definitely an issue, especially if you have a tiptronic. Porsche calls for pulling the engine (13 hrs flate rate). But with the insight offered to my post and further research locally, I found it can be done by going through the intake manifold. The estimated time required is 2 - 4 hours. If you would like further details, I'll certainly know more and would be happy to share.

[Lee Quave]

I have a 1999 C2 with 58,000 miles and I hear a chirping or cricket like sound coming from the engine compartment at idle and low RPMs with or without the AC on. I changed the poly belt but that didn’t stop the sound. Does anyone have an idea what could cause this and if the fix is a DIY and if not how much would I expect to spend to fix it the local Porsche dealership?

Thanks,

Lee

Lee,

Note my recent post on the identical symptom. You may even note that it makes one final chirp as you shut off the engine. Quite the coincidence I'd say. Even more coincidental is that we essentially have the same model/year/mileage. I found the noise is caused by a unique failure of the oil separator. Accesibility is definitely an issue, especially if you have a tiptronic. Porsche calls for pulling the engine (13 hrs flate rate). But with the insight offered to my post and further research locally, I found it can be done by going through the intake manifold. The estimated time required is 2 - 4 hours. If you would like further details, I'll certainly know more and would be happy to share.

Thanks for the info. I haven’t noticed the one final chirp you mentioned, I’ll have to pay closer attention the tomorrow when I bring the car in for its 60,000 mile service. The information you gathered may come in handy if the dealer suggests the engine pulling route.

Let me know how the repair went on your car and I will do the same.

[dp996]

Thanks for the info. I haven’t noticed the one final chirp you mentioned, I’ll have to pay closer attention the tomorrow when I bring the car in for its 60,000 mile service. The information you gathered may come in handy if the dealer suggests the engine pulling route.

Let me know how the repair went on your car and I will do the same.

Just chirped back into the garage following a disappointing, but not unexpected PHX loss to the Mavs at my local pub and found your last post. This time the final chirp was exactly as expected, post shut down with a bleeding effect; obviously the (vaccuum) pressure differential equalizing. (kind of like a last gasp from a weak bird)

FYI, one of the things I learned in my quest is that a P dlr svc dept is req'd to stipulate an engine pull, as they are obliged to utilize factory designed clamps (as opposed to worm gear type clamps). The less labor intensive method cannot be performed if P sanctioned clamping is performed. Thus, an independent is your only likely source for a lesser expensive resolution.

Where are you located (geographically speaking)?