I recorded this on my 2006 997 C4. Is it bad?


Number of ignitions range 1 6699/2287.6h
Number of ignitions range 2 1733/2259.5h
Number of ignitions range 3 403/2259.5h
Number of ignitions range 4 115/2259.5h
Number of ignitions range 5 1/1782.9h
Number of ignitions range 6 1/1782.9h
Operating hours counter 2320.4

 

Slightly iffy since the range 4s were pretty recent (60 hours ago), but it's edging towards fine IMO. If it had another 100-200 hours after that event I'd say the car is probably totally good to go. Typically if a missed shift is going to explode a car, it does it right then or extremely shortly afterwards.

On the plus side, there are very few records in the other ranges so it's not like the car was regularly abused.

There are at least 400,000 threads on here and 6speedonline where you can hear both sides ("overrevs = run away" vs "it depends") of the debate and form an opinion.

 

Thanks. I will use the search from now on. I was a little bummed as I just got the Durametric and did the read.

 

Sorry, didn't notice that you already have the car. Usually these posts are "should I buy or flee in terror?"

I bet you'll be fine - there are plenty of 997s driving around with range 4/5/6 overrevs and no related issues pop up. You may take a small hit on resale though.

 

Did you just buy the car or did you have it when the range 4s happened?

 

I bought it last summer. I have not put that many hours on it. It was stored during the Michigan winter.

 

It's general consensus here that readings of only 1 ignition is a glitch. I think it's mechanically impossible for the engine to decelerate from Range 6 down through range 5 & 4 down into 3 with only one ignition.
So, with that line of thinking you only have some range 3's and maybe, and I say maybe 1 ignition in range 4. The car has survived and has enough hours on it since the "incident" to be OK. Generally 40 hours means you're fine.

 

The previous owner totally enjoying his 911 but I think your car is fine. Next time do the DME and PPI before purchase. Drive it and enjoy it.

 

There are certain people that can get far too paranoid about the overrev report. If you are buying an E46 M3 6MT for example, that information is not available. For most every car outside of Porsche it is not available. You interview the driver, find out the car's history, and either move forward or don't. Certainly, a "money shift" can happen, but after a certain amount of hours, if the engine hasn't blown, it won't.

More information is not always our friend, especially when it results in analysis paralysis. It's like someone getting a DNA breakdown showing an "elevated" risk of a few types of cancer at some point in the future, and living their life in fear, not knowing that every other guy on the street has at least that many genes also showing an elevated risk of cancer. Data has to be analyzed outside of a vacuum, and in comparison to other data.

I suppose an overrev report can be like reading the MSDS for water. It sounds scary; you probably wouldn't drink the stuff after doing so.

 

Thank you all for the feedback. I am changing the oil this weekend and sending a bit to Blackstone.

 

Dude, ask away. This is a very specific and personal question since you already have the car.

I would say every question and every topic has just about been covered and/or beat to death. Lol, might as well close the forums to new threads then since everything imaginable has already been covered. Search function even bogs down in a bunch of irrelevant useless crap.