39 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHP1314 code thrown
Reported or suspected cause
cayenne)
Reported cause
No successful repair reported for this finding.
1
Identified cause
0
Suspected cause
0
Reported fixes
Read evidence and context
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that report identifying a cause
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Reported cause
I'm looking at a Cayenne coil (08 Cayenne S) but imagine they are very similar to the 911 (I have a 997 as well but the present issue is with the Cayenne).
Leading evidence: 'cayenne)' (1 discussions report identifying this cause; no attributable repair resolution). Across 1 matching discussions, the most frequently mentioned possible cause is 'cayenne)' (1 discussions; 1 report identifying it and 0 suggest it). The most frequently discussed action is 'Check #2 spark plug' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.
Source reports, not a diagnosis or a success probability. Counts refer to discussions and can overlap.
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that performed work without a confirmed outcome
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Performed · outcome unconfirmed · Original poster
Another Update: Successfully replaced#1, #2 and #3 plugs and coils, which included the suspect #2 coil.
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that performed work without a confirmed outcome
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Performed · outcome unconfirmed · Original poster
The plugs themselves were replaced about 8k miles ago so I figure they are good.
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that performed work without a confirmed outcome
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that performed work without a confirmed outcome
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Performed · outcome unconfirmed · Original poster
One lesson learned here is that both the Primary and Secondary coils inside the ignition coils can be tested with a multimeter.
These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.
cayenne)
No successful repair reported for this finding.
1
Identified cause
0
Suspected cause
0
Reported fixes
Read evidence and context
Discussions that report identifying a cause
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Reported cause
I'm looking at a Cayenne coil (08 Cayenne S) but imagine they are very similar to the 911 (I have a 997 as well but the present issue is with the Cayenne).
Counts describe captured discussions, not unique people or a diagnosis. Author identities are not reliably stored. Exact duplicate evidence is counted once across matching discussions; one discussion counts at most once per action/state. Multiple repairs reported together remain a combination. Suggestions and failed attempts do not establish a fix. Matches cover whole discussions and can include related faults, model variants and incomplete threads.
39 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
Rennlist: 1 discussions
0 evidence records excluded for query context · 0 excluded by outcome qualification · 0 adjusted by outcome qualification.
1 acknowledgements have no verified action link; they do not establish a repair result.
Outcome without a verified action link
That explains why I had no change in the error code.
So, I was driving on what passes for a paved road here in San Francisco and my '99 cab started suddenly running really poorly. A lack of power and a rough idle. Within half a mile, the Check Engine light came on. I limped home another 1.5 miles and connected up my trusty ELM OBDII reader. Low and behold a P1314 code appeared. This was the only error code thrown. I've looked around on the sites and it seems that it is most likely related to a bad connection or problem with the Cylinder 2 spark plug. The plugs themselves were replaced about 8k miles ago so I figure they are good.
Any ideas on how to diagnosis this? Could the horrible streets of SF possibly have shaken the connection between the plug and the coil so much that it is not getting spark? Maybe the plug itself is loose? Something else?
TIA
Hope you are right fpb111. I will get under there and check it out this weekend. Thanks for the ideas. May just go ahead and order an ignition coil. Just in case. I just found this thread:
https://rennlist.com/forums/996-foru...n-warning.html
Sounds like the connector coming off is not that unlikely.
I strongly recommend this approach. That way you actually diagnose the issue, as opposed to swapping parts and hoping for the best. I'm betting coil or loose connection, but better to be sure.
The suddenness of the failure makes me think it may be a problem with the connector.
If I take off the rear bumper, should I be able to get access to Ignition Coil 2 without jacking up the car?
No need to remove the bumper. Just jack up the left rear, remove the left rear wheel, and place a jack stand there. Remove the heat shield that covers the coils. #2 and #3 are the two closest to the front so they are relatively easy to remove.
I have access to a jack & stands but its a pain to get to it logistically (i am in the City and the jack is in the Burbs). My heat heat shields in the rear are vibrating so I was thinking I might take off the bumper and do the two jobs at once.
The #3 can easily reached without removing anything. If you don't have a jack, get two patio slabs at Home Depot, stack them and back onto them. This will lift the corner enough that you can easily reach the #3 and #2 plugs/coils.
OK so I swapped the #2 and #3 coils and.... I'm still getting P1314 (and P0302) from cylinder #2. The engine still runs horribly.
Any ideas? What should I test next? I looked down the #3 and #2 plug holes and all looked good. I guess a plug could have gone bad in #2, although the plugs are fairly new (8k miles). When this all started it was really sudden (not like a situation where the misfire happened once in a while). Something seemed to fail all at once.
Does anyone know where the coils get their signals to fire from? Maybe there is a bad connection on the other end of the coil wire.
P0302
Misfire, Cylinder 2, Damaging to Catalytic Converter
P1314
Misfire, Cylinder 2, Emission Relevant
ok I removed the #2 and #3 spark plugs. I dont see anything unusual about them, but maybe someone out there can detect something. #2 is the cylinder that is misfiring and is on the left in the picture. #3 is on the right (which has not had any issues). TIA
They look fine although I would have guessed they had more than 8k on them but that could just be the photos. Can you swap them and see if the code follows one of them?
Yes. I will swap them and post again. I'm a bit surprised by the shiny black deposits. #2 is on the right in this pic.
I'm getting good at getting the plugs and coils out! BTW, I'm doing it without raising the car and without removing the muffler. Having the proper tools (different extension sizes) really helps, that and being a contortionist.
So it looks like I made a mistake. I was actually swapping coils from #1 and #3 rather than #2 and #3. Oops. That explains why I had no change in the error code.
Soooo. I took out coil #2. I also got to thinking, there must be a way to test the coils with a multimeter (rather than swapping them) and low and behold there is.
On these coils the Primary Coil resistance is tested between terminals 1 and 15 and should have a value of 0.4 to 0.7 Ohms. All three of mine had a value of .7 ohms, so no problem with the Primary coil.
Next up the Secondary coil test. From what I can tell, terminal 4 to the spark plug contact point is the Secondary coil. I measured 18k ohms on both the #1 coil and the #3 coil. On the #2 coil I measured an open circuit! Pretty sure I found the problem here. It seems that the secondary coil in #2 is shot.
I think it may be time for 6 new coils. It has been 15 years and 72k miles so there is that.
Question for you guys while I wait for 6 new coils and plugs from Pelican. Do I have to "gap" the new (4 electrode) plugs ? Or do they (Beru 14 FGR-6 KQU) come properly set ?
Update time.
I have replace the #2 plug and coil. #3 and #1 plugs/coils are out and ready to be replaced. Amazingly I was able to get a torque wrench on the #2 plug and tighten it to the prescribed 22 ft-lbs. Doubt I will be able to get the torque wrench on the #1 plug. Any ideas on this?
I do it by feel. Usually they recommend hand turn it till it seats on the head then turn 90 degrees more. If in doubt, err on the lose side. You can always go back to tighten it more if needed.
http://www.boschautoparts.com/SparkP...le-install-doc
Thanks Ahsai. I have been hand tightening them so that procedure makes sense. I'm amazed that the plugs are reachable at all given the tight clearances. It is cool how few tools are required to do the job though.
Another Update: Successfully replaced#1, #2 and #3 plugs and coils, which included the suspect #2 coil. I started up the engine and voila! Check engine light immediately went off and the engine is back to running normally. Looks like the #2 coil was the problem as suspected. I'm just happy the problem wasn't something more serious like a sticking valve.
Thanks for all your help guys. Soon I will swap out the coils/plugs on the other side of the engine but the bad #2 coil issue that caused all of this is solved.
One lesson learned here is that both the Primary and Secondary coils inside the ignition coils can be tested with a multimeter. I've seen very little documentation that shows this.
So I have finished installing all new coils and plugs and (wait for it)... the engine is purring like a kitten. Nice and smooth. I suspect that the five old "good" plugs/coils were working but maybe not optimally.
Resurrecting an old thread. It is interesting that coils can be tested. I haven't seen this until I came across this thread. Can anyone explain which terminals are which on the coil? I'm looking at a Cayenne coil (08 Cayenne S) but imagine they are very similar to the 911 (I have a 997 as well but the present issue is with the Cayenne). The Cayenne coil has 4 pins. I found a link from autozone about testing Kia coils (see link below). If we know which pins are which, we should be able to follow a similar procedure to do the test.
http://www.autozone.com/repairguides...96b43f80376169
It would be great if sjg1138 could post his procedure. That should be a sticky for every subforum that involves this type of coil so that people are aware of it and don't replace coils unnecessarily.
Best to ask in the Cayenne Forum because the answer does not apply to this Forum.But this may help
https://www.picoauto.com/library/aut...urrent-4-wire/
This is the generic info for 3 wire coils
You Tube
http://easyautodiagnostics.com/misc-...n-coil-tests-1
You Tube
