Help on this DME report please!
05-19-2012, 12:00 AM
#31
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In talking to the dealer and techs, Porsche NA trains them to look for hits in ranges 4-6. They consider hits in ranges 1-3 normal, 4 to be a gray area, and 5 & 6 to be introducing engine damage.
To respond to earlier posts, my car is CPO'd, and the DME was run by a different dealer than the selling dealer, so there was nothing it for them if they intended to mislead me - I had already bought the car. They were simply running the metrics and providing me the info.
To respond to earlier posts, my car is CPO'd, and the DME was run by a different dealer than the selling dealer, so there was nothing it for them if they intended to mislead me - I had already bought the car. They were simply running the metrics and providing me the info.
05-19-2012, 07:13 AM
#32
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Resurrecting thread for report I received today:
Range 1 - 2262 (to 7500 rpm)
Range 2 - 231 (to 7700 rpm)
Range 3 - 24 - (to 7900 rpm)
The service manager at the dealership told me this was fine and nothing to worry about. He said it was one of the cleanest reports he's seen. I was hoping to not see any in Range 2 and above. Without the info about the hours, etc. when these occurred, what comfort or fear should these numbers give me?
Range 1 - 2262 (to 7500 rpm)
Range 2 - 231 (to 7700 rpm)
Range 3 - 24 - (to 7900 rpm)
The service manager at the dealership told me this was fine and nothing to worry about. He said it was one of the cleanest reports he's seen. I was hoping to not see any in Range 2 and above. Without the info about the hours, etc. when these occurred, what comfort or fear should these numbers give me?
Range 1: 7300-7500 RPM
Range 2: 7500-7700 RPM
Range 3: 7700-7900 RPM
Range 4: 7900-8400 RPM
Range 5: 8400-9500 RPM
Range 6: 9500-11000 RPM
At 7200 RPM you have 120 revolutions per second X 3 ignitions per revolution or 360 ignitions per second.
Based on the info you supplied, this car has spent the following time in each rev range, assuming the midpoint of each range as the actual RPM.
Range 1 - 2,262 ignitions / 370 per second = 6.11 seconds
Range 2 - 231 ignitions / 380 per second = 0.61 seconds
Range 3 - 24 ignitions / 390 per second = 0.06 seconds
These numbers, in my opinion, are nothing to worry about.
05-19-2012, 11:27 AM
#33
In talking to the dealer and techs, Porsche NA trains them to look for hits in ranges 4-6. They consider hits in ranges 1-3 normal, 4 to be a gray area, and 5 & 6 to be introducing engine damage.
To respond to earlier posts, my car is CPO'd, and the DME was run by a different dealer than the selling dealer, so there was nothing it for them if they intended to mislead me - I had already bought the car. They were simply running the metrics and providing me the info.
To respond to earlier posts, my car is CPO'd, and the DME was run by a different dealer than the selling dealer, so there was nothing it for them if they intended to mislead me - I had already bought the car. They were simply running the metrics and providing me the info.
05-19-2012, 03:42 PM
#34
Drifting
Very informative Tim.
There is a question of exactly how much time in the ranges 4 or 5, it would take to do significant damage ?
I think range 5 or 6 is a no brainer .
There is a question of exactly how much time in the ranges 4 or 5, it would take to do significant damage ?
I think range 5 or 6 is a no brainer .
05-19-2012, 06:34 PM
#36
There is no such thing as inertia in this case.
It is someone speaking about something that they have no concept about.
I would stay far away from what Scott says in the future.
It is someone speaking about something that they have no concept about.
I would stay far away from what Scott says in the future.
05-19-2012, 07:23 PM
#37
Drifting
My 07 had a 1 ignition in ranges 4,5,6. I posted the DME about a year ago and I think it agreed upon that it was basically impossible to actually have just a 1 ignition in those ranges.
It just made for a 'dirty' looking report.
It just made for a 'dirty' looking report.
05-20-2012, 01:08 AM
#38
Rennlist Member
Malexgcab, dealer did not charge me for the DME report as I had it done while it was in for some CPO suspension work (replaced a rattling upper strut mount). Had they charged me, it would have run about $60.
05-20-2012, 01:09 AM
#39
Rennlist Member
Tim,
Thanks for the cogent post regarding my numbers. That was what I was trying to get at, but didn't have the right factors to "reduce" the DME numbers to duration at each range. Very helpful.
Thanks for the cogent post regarding my numbers. That was what I was trying to get at, but didn't have the right factors to "reduce" the DME numbers to duration at each range. Very helpful.
05-20-2012, 10:51 AM
#41
Drifting
Yes, that's what I understand as well but comforting to have some concensus re this anomaly.
05-20-2012, 10:09 PM
#42
10-14-2012, 05:49 PM
#43
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977.1 Tiptronic S
I purchased my first Porsche 997 Carrera Tiptronic S last week and since owning the car have gained a lot of insight from these forums. The ignition range being one of them I knew nothing about at time of purchase.
The odd thing is this is a tiptronic and I keep reading people say they can't over rev. So I wondered how this could be explained
Vehicle has 58K Miles - Operating Hours 1992
Range 1: 7304 / 1977h (someone flawed it just before I picked it up
)
Range 2: 1026 / 1801h
Range 3: 634 / 1801h
Range 4: 503 / 1801h
Range 5: 115 / 1801h
Range 6: 1 / 1791h
My limited understanding is that range 6 should be 10 minimum? And that the last major event in the vehicle happened around 6000miles ago, which is over 24mths ago and the Range 6 happened at 51K miles 30 mths ago
Its a bit late now i have bought the car, should I worry about this?
The odd thing is this is a tiptronic and I keep reading people say they can't over rev. So I wondered how this could be explained
Vehicle has 58K Miles - Operating Hours 1992
Range 1: 7304 / 1977h (someone flawed it just before I picked it up
)Range 2: 1026 / 1801h
Range 3: 634 / 1801h
Range 4: 503 / 1801h
Range 5: 115 / 1801h
Range 6: 1 / 1791h
My limited understanding is that range 6 should be 10 minimum? And that the last major event in the vehicle happened around 6000miles ago, which is over 24mths ago and the Range 6 happened at 51K miles 30 mths ago
Its a bit late now i have bought the car, should I worry about this?
10-14-2012, 07:17 PM
#44
Oops: just reread and noticed you dont have a third pedal. Rough math is 1 second in the rev range for each 360 counts. Given that I happened long ago, I woundnt worry about it.
I looked at a car once with 22,000 range ones- most I ever saw.
I looked at a car once with 22,000 range ones- most I ever saw.
10-15-2012, 04:36 AM
#45
Poseur
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5938, 235, 55, 1, 0, 0 (at 29,700 kms)(18,455 miles)
7011, 311, 59, 1, 0, 0 (at 64,260 kms)(39,929 miles)
These were my numbers awhile ago. Now at 70,000 miles (112,654 kms) and I'm not worried one bit.
I believe that when you get something like a '1' in a field it's most likely a error within the DME system.
As far as my range 1 and 2 numbers it's apparently not impacting the engine life at all. At least from my seat of the pants.
7011, 311, 59, 1, 0, 0 (at 64,260 kms)(39,929 miles)
These were my numbers awhile ago. Now at 70,000 miles (112,654 kms) and I'm not worried one bit.
I believe that when you get something like a '1' in a field it's most likely a error within the DME system.
As far as my range 1 and 2 numbers it's apparently not impacting the engine life at all. At least from my seat of the pants.