View Poll Results: GTS Owners: Does/Did you GTS ping, pink, knock, pre-detonate?
Yes. My GTS pings - I don't know why.
11
18.33%
Yes. My GTS did ping but it was cured - fuel problem (pump, injectors, etc.)
5
8.33%
Yes. My GTS did ping but it was cured - knock sensor and/or EZK problem.
0
0%
Yes. My GTS did ping but it was cured - other problem.
4
6.67%
Maybe. I'm not really sure.
5
8.33%
No. My GTS does not ping as far as I know.
11
18.33%
No. I'm sure that my GTS does not ping.
24
40.00%
Voters: 60. You may not vote on this poll
GTS Owners: Does/Did your GTS ping, pink, knock, pre-detonate?
06-10-2006, 01:24 PM
#47
Addict
Rennlist Member
Rennlist Member
So then, where are the faults stored?...or at least the "codes" for the faults? An airbag fault for instance, MUST be cleared by an external device. How do you explain all records of battery disconnects and such?
I am very confused now as I KNOW what I saw and it was all conveyed to me by Dan Warner as he went through it. I trust his expertise as he has years of highly technical schooling in the Porsche realm.
There must be a link in between what I am saying and you are saying Loren.
Thanks!
I am very confused now as I KNOW what I saw and it was all conveyed to me by Dan Warner as he went through it. I trust his expertise as he has years of highly technical schooling in the Porsche realm.
There must be a link in between what I am saying and you are saying Loren.
Thanks!
06-10-2006, 02:01 PM
#48
Rennlist Member
There's NO non-volatile memory device in either the LH or the EZK ECUs.
Thus, once the battery voltage is removed, both ECUs lose their faults.
<<<<<<<<<<<<<<
Loren,
First sentence - incorrect.
Second sentence correct.
>>>>>>>>>>>>>>>>>>>>>>>
Keith, the answer to your question is that the fault codes are stored in an SRAM (volatile memory) in the diagnostic ECUs. The codes are maintained by a permanent battery supply. In most cases, the codes can be cleared by a battery disconnect.
The only case contary to that, which I am aware of is the Airbag controller of the 928 which requires a diagnostic tester to clear the stored fault codes.
Thus, once the battery voltage is removed, both ECUs lose their faults.
<<<<<<<<<<<<<<
Loren,
First sentence - incorrect.
Second sentence correct.
>>>>>>>>>>>>>>>>>>>>>>>
Keith, the answer to your question is that the fault codes are stored in an SRAM (volatile memory) in the diagnostic ECUs. The codes are maintained by a permanent battery supply. In most cases, the codes can be cleared by a battery disconnect.
The only case contary to that, which I am aware of is the Airbag controller of the 928 which requires a diagnostic tester to clear the stored fault codes.
06-10-2006, 02:47 PM
#49
Addict
Rennlist Member
Rennlist Member
I wish I had better knowledge of these things. I am more of a mechanical guy than an electronics guy. I do get the logic behind some of the electronics, but when we get into this aspect, I am not sure how it all works. I wish I had better answers and remarks. I know there MUST be a gap in what I had experienced and what both of you are stating.
I think I will try to contact Dan and see if he recalls and what his personal experience has been. He is a quiet guy and not involved in the community except for an occasional "lurk". Those who know him can attest to his knowledge and miraculous healing powers.
...especially those in Phoenix Arizona.
I think I will try to contact Dan and see if he recalls and what his personal experience has been. He is a quiet guy and not involved in the community except for an occasional "lurk". Those who know him can attest to his knowledge and miraculous healing powers.
...especially those in Phoenix Arizona.
06-10-2006, 07:37 PM
#50
"There's NO non-volatile memory device in either the LH or the EZK ECUs.
Thus, once the battery voltage is removed, both ECUs lose their faults.
<<<<<<<<<<<<<<
Loren,
First sentence - incorrect.
Second sentence correct."
- John Speake -
It appears that John likes to take senctences out of there context.
The context of the issue related to storage of fault codes.
All changing variables, e.g. fault codes. are either stored in uP registers,
on-board uP RAM, or external RAM or flash memory. EPROM memory
is NEVER considered/assumed part of changing variable memory storage
in technical discussions.
Whatever!
Thus, once the battery voltage is removed, both ECUs lose their faults.
<<<<<<<<<<<<<<
Loren,
First sentence - incorrect.
Second sentence correct."
- John Speake -
It appears that John likes to take senctences out of there context.
The context of the issue related to storage of fault codes.
All changing variables, e.g. fault codes. are either stored in uP registers,
on-board uP RAM, or external RAM or flash memory. EPROM memory
is NEVER considered/assumed part of changing variable memory storage
in technical discussions.
Whatever!
07-06-2006, 10:04 PM
#52
Basic Sponsor
Rennlist
Site Sponsor
Rennlist
Site Sponsor
Dave,
I stand corrected - Zane traveled with me to Denver and told me my car was Pinging under acceleration.
I guess I was to deaf to hear it.
Now - what do we do about it????
Best,
Roger
I stand corrected - Zane traveled with me to Denver and told me my car was Pinging under acceleration.
I guess I was to deaf to hear it.
Now - what do we do about it????
Best,
Roger
__________________
Does it have the "Do It Yourself" manual transmission, or the superior "Fully Equipped by Porsche" Automatic Transmission?
George Layton March 2014
928 Owners are ".....a secret sect of quietly assured Porsche pragmatists who in near anonymity appreciate the prodigious, easy going prowess of the 928."
Does it have the "Do It Yourself" manual transmission, or the superior "Fully Equipped by Porsche" Automatic Transmission?
George Layton March 2014928 Owners are ".....a secret sect of quietly assured Porsche pragmatists who in near anonymity appreciate the prodigious, easy going prowess of the 928."
07-06-2006, 11:34 PM
#53
Addict
Rennlist Member
Rennlist Member
Thread Starter
Join Date: Oct 2003
Location: Gone. On the Open Road
Posts: 16,467
Received 1,623 Likes
on
1,060 Posts
Originally Posted by ROG100
Pinging under acceleration.
I guess I was to deaf to hear it.
Now - what do we do about it????
I guess I was to deaf to hear it.
Now - what do we do about it????
In the mean time, pull a plug and tell us what type of plug it is - or at least get the 'W" code from it. One possible culprit is plugs that are the wrong heat range. I'll be doing that soon on mine and then we'll get back into the swing of things with a new thread.
Last edited by worf928; 07-07-2006 at 01:03 AM.
07-07-2006, 12:39 AM
#54
Racer
Join Date: Dec 2002
Location: Gilbert, AZ. U.S.A.
Posts: 304
Likes: 0
Received 0 Likes
on
0 Posts
Most of you with pinging are saying that the pinging happens when the engine is warmed up. What is warmed up?
Most of these cars have had the thermostat changed at least once in their life. Are the non-pinging cars running cooler thermostats?...or are the pinging cars running hotter thermostats?
Are all the pinging posts coming from Death Valley amd the non-pinging posts from Alaska?
Most of these cars have had the thermostat changed at least once in their life. Are the non-pinging cars running cooler thermostats?...or are the pinging cars running hotter thermostats?
Are all the pinging posts coming from Death Valley amd the non-pinging posts from Alaska?
07-07-2006, 03:56 PM
#59
Rennlist Member
If I understand it all correctly the GTS EZK chip advances timing two degrees more at higher RPMs than the GT chip does. I've been contemplating putting a GTS EZK chip in my GT. I'm in Denver at 5300' and we usually don't have problems with more advance/pinging. Considering there's about a 16% power loss at 5300' I'm desparate to get a little power back.