> The grey dot indicates the coil-packs were updated to fix the problem
> with the original batch installed from the factory in the 2k Maximas.
>
> In your original post, you claimed to need new coil packs.. what led
> you to that diagnosis?
I had the symptoms for the same:
1. SES light, and then rough running of the engine (with little shaking)
2. Code read from the computer was P1320 -- ignition coil issues.
3. my VIN Number is JN1CA31D8YT......
and the TSB says anything prior to JN1CA31D91T... could have this
problem...
hence i decided it must be the coils...
but after i got the coils, i went to install it, at that time, i see
that the grey dot is already in there.... tomorrow, i will pull out one
of the ignition coils to check the part number...
thanks,
ravi
> I have not heard of the grey-dotted coils failing prematurely.
>
> Cheers,
> Nirav
> 96 Max GLE, 132k
njmodi - 13 Apr 2006 20:55 GMT
Did you see that all 6 coils had the gray dot? It seems as though you
are not the original owner, so perhaps the original owner only replaced
a few of the 6.
The part numbers for the coils won't tell you anything. The grey dot
on the top of the coil is the telltale sign that it is the updated
part.
Check to see if all 6 have grey dots. If the car is still exhibiting
the same driving symptoms, just swap out the coils with your new ones.
How many miles on your Max?
Nirav
Ravi - 13 Apr 2006 21:19 GMT
> Did you see that all 6 coils had the gray dot? It seems as though you
> are not the original owner, so perhaps the original owner only replaced
> a few of the 6.
i am the original owner. I had the same doubt as well. But checked all 6
of them have the grey dots... And even yesterday, it exhibited the same
problem - of shaking and rough engine...
i have little less than 50k miles on them...
thanks,
ravi
> The part numbers for the coils won't tell you anything. The grey dot
> on the top of the coil is the telltale sign that it is the updated
[quoted text clipped - 6 lines]
>
> Nirav
njmodi - 14 Apr 2006 01:17 GMT
Then the dealer must have replaced them under warranty at some point. I
don't think the grey-dot coils were ever installed from the factory -
but I'm not 100% certain.
Just swap out the coils and see if that fixes the problem.
Nirav
Ravi - 11 May 2006 19:26 GMT
I did swap out the coils and the engine has been running smoothly for a
week now... does this mean:
a. "gray dot" doesn't indicate that the coil is the flawless ones
or
b. "gray dotted" flawless coils can also go bad and lead to SES light...
I almost sure that the dealer did not replace the ignition coils...
+ravi
> Then the dealer must have replaced them under warranty at some point. I
> don't think the grey-dot coils were ever installed from the factory -
[quoted text clipped - 3 lines]
>
> Nirav