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Lots of Coils Information -Slight Roughness at low speeds ?

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Old 03-02-2006, 03:18 PM
  #31  
mudman2
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OK all done here are the parts used

8 * 999-170-218-90 Spark Plugs
8 * 948-602-104-01 Pencil Coil

As predicted by Madfox PIWIS shows nothing

03350050 On Board Diagnostic
22 0.20

Its running much better now.
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Old 03-02-2006, 07:07 PM
  #32  
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Originally Posted by MadFox
Tech write-up: Found no misfires in DME. Checked engine misfire data - multiple misfires found. Found all sparkplugs had premature wear. Also found all coils to be cracked causing misfires and damage to spark plugs. Replaced all 8 spark plugs and coils.
Qty - FP Number ----- Description ----- Unit Price
8 999-170-218-90 Spark Plug 0.00 Warranty
8 948-602-104-00 Ignition Coil 0.00 Warranty
Originally Posted by mudman2
OK all done here are the parts used

8 * 999-170-218-90 Spark Plugs
8 * 948-602-104-01 Pencil Coil

As predicted by Madfox PIWIS shows nothing

03350050 On Board Diagnostic
22 0.20
Thank you for providing the information. Good luck with the repair.

The part number shows that the coil has been changed (improved?).

Would you please conduct a test to verify that the newer coils lasts longer than the 20K miles of the -00 parts? Assuming a 50 mph average, this should take 400 hours. How long will you need to run this test?
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Old 03-02-2006, 07:32 PM
  #33  
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over a year with me
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Old 03-02-2006, 08:11 PM
  #34  
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Originally Posted by MadFox
FWIW: I'm driving a loaner, my S is in for 60K service. I'm having them recheck the coils and plugs today as I'm starting to think I'm having some low RPM misfires again. IIRC, there was an issue with bad coils being replaced with the same manf./lot number coils.
Originally Posted by wingless
This is a repeat "repair", correct? Are the part numbers for the first service? What are the numbers for the latest service? Any idea on the fault codes?
Is this a current repeat repair? What is the status?
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Old 03-02-2006, 08:15 PM
  #35  
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I pressed them on the fault codes. They said the had nothing, even when I referred them away from PIWIS, they said there is no other way to get anything from the motor.

Mine was a first event.
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Old 03-03-2006, 12:37 AM
  #36  
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Originally Posted by mudman2
Mine was a first event.
Yeah, right...cause next time it happens, your vehicle qualifies for the Lemon Law in most states under the "3-stirkes for the same problem and you're out" rule...then they have to buy back your truck...
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Old 03-03-2006, 10:27 AM
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Originally Posted by Budget M3
Yeah, right...cause next time it happens, your vehicle qualifies for the Lemon Law in most states under the "3-stirkes for the same problem and you're out" rule...then they have to buy back your truck...
Absolutely true, however much easier said than done in many cases.

Bit of a legal 'black hole, as it varies by state, the service advisor must write the customer complaint/service ticket up using almost exactly the same wording to verify the same issue on all 3 visits, there are differences in state laws regarding having to go thru arbitration (as described in the warranty handbook), there is a time limitation for a 'lemon law' claim to be filed, based on the purchase date of the vehicle and the date(s) of the service repair attempt(s).

How the hell do I know all this stuff..............never mind.
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Old 03-03-2006, 01:25 PM
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That may explain why the Cayenne is NOT offered in Speed (lemon) Yellow.
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Old 03-03-2006, 08:44 PM
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Originally Posted by wingless
That may explain why the Cayenne is NOT offered in Speed (lemon) Yellow.
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Old 03-12-2006, 04:32 PM
  #40  
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Default Inspected Coils and Plugs

The driver's side coils and plugs were inspected on my '04 CT. All four coils were cracked. All four plugs were okay, except the gap was way too small. The vehicle ran properly, with no rough operation.

This is the procedure.



Remove the four cover screws. A rag is required to protect the design cover from being scratched by the secondary air pump during removal.






Remove the design cover, lifting at the top, to clear the ball clips. The two ball clips are seen near the wiring harness. The engine compartment side cover was removed, but that is not required for this procedure.






Remove the lower air hose from the secondary air pump.






Unplug the wiring harness from the coil. Press the release while pulling the harness connector.






Unscrew the coil screws, remove the coils.

Remove the spark plugs.



All four coils are cracked. They are the old, .00 part number. The crack starts below the seal flange and extends for the entire large diameter.






For now, the plug gap was set to 1.6mm. The plug torque is 25 Nm, for used and 30 Nm for new.






The coils are replaced and the screw torque is 10 Nm.






The wiring harness connector is plugged into the coil, push in ‘till it clicks.






The design cover torque is 5 Nm.

Replace the lower air hose onto the secondary air pump.

The passenger's side, for cylinders 1 through 4, requires additional steps to remove and replace parts in the way.
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Old 03-13-2006, 10:10 AM
  #41  
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Nice Wingless, good informative post !

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Old 03-22-2006, 07:49 PM
  #42  
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Originally Posted by wingless
The driver's side coils and plugs were inspected on my '04 CT. All four coils were cracked. All four plugs were okay, except the gap was way too small. The vehicle ran properly, with no rough operation.
Is the general consensus that making this statement is just asking for trouble? This was true, before and after the inspection, for several days. Then, the ’04 CT had a problem. It would idle okay, but as soon as any boost kicked in, it would shake violently.

The dealership replaced all eight coils with the newer 948-602-104-01 part. The plugs are fine.

The vehicle had engine faults P0015, P0691, P012C and P0134, due to cylinder misfire.

The vehicle is again operating properly. (Once again, famous last words?)
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Old 03-23-2006, 03:13 AM
  #43  
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Originally Posted by wingless
The dealership replaced all eight coils with the newer 948-602-104-01 part. The plugs are fine. The vehicle had engine faults P0015, P0691, P012C and P0134, due to cylinder misfire. The vehicle is again operating properly. (Once again, famous last words?)
Hey Wingless:
IMHO, I think you'll be fine. Only thing would be maybe the plugs weren't really "fine" after all.. if it acts up again.. I'd insist on all new plugs too.
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Old 03-24-2006, 12:42 PM
  #44  
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I lost my #6 cylinder to the cracked coil. I just had it fixed at HBL porsche of Tysons.. will post the full readout from my warranty repair sheet when I get back home.

Basically, I heard this "poof", then it was missing really hard....
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Old 03-24-2006, 01:22 PM
  #45  
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FYI, in every other instance all of the coils were cracked. Not the case here?
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