8 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHMisfires can be beat!!!
Leading reported evidence
Clean maf and said nothing glaring was showing up
Performed · outcome unconfirmed
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
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 performed work without a confirmed outcome
1
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Performed · outcome unconfirmed · Original poster
These guys spent about 45 minutes looking over the car, listening for issues, hooking it up to their computer, cleaned the MAF and said nothing glaring was showing up.
Leading evidence: 'Clean maf and said nothing glaring was showing up' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Clean maf and said nothing glaring was showing up' (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
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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
So in my case, the condition was under light acceleration and easy driving, the car ran perfect and no CEL.
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 contain suggestions
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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 contain suggestions
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Suggestion
The manual advises against the use of oil additives.
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 contain suggestions
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Suggestion
This was mainly due to sludge and use of single weight oils.
These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.
Clean maf and said nothing glaring was showing up
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
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
These guys spent about 45 minutes looking over the car, listening for issues, hooking it up to their computer, cleaned the MAF and said nothing glaring was showing up.
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.
8 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
This is neither plug or coil related, so renewing either will make no difference.
Hey, I am new to the forum and I guess have a good story. I recently purchased a 2003 996 Cabriolet with 20k miles. I put about 1200 miles on it and started to receive the dreaded CEL P0305. And yes, I was thinking OH CRAP!
So like all the other good soldiers, I purchased a new coil pack and spark plug. Guess what happened after I replaced them...you got it, nothing. Same CEL under the same condition.
So in my case, the condition was under light acceleration and easy driving, the car ran perfect and no CEL. When I would try and accelerate hard, noticeable misfire and the CEL would light and log a P0305.
The car had been serviced perfectly with annual services being done every 1800 to 2000 miles, so I called the dealer who had done all the work. They knew the car perfectly and thought it could be a sticky lifter that would only have issues when the variocam would push the lifters into the higher position. They recommended a product from GB called MOA.
Before I did that, I went to Chris's in Bellevue and had them look at it. By the way, if you live within 1000 miles of these guys, go and meet them. These guys spent about 45 minutes looking over the car, listening for issues, hooking it up to their computer, cleaned the MAF and said nothing glaring was showing up. So, I talked to them about the additive and they said, what the heck, could help and won't hurt. Oh yea, I went in to schedule an oil change and they asked when it had been done last and told me to wait awhile and wouldn't take my money because I said I was coming back for an oil change.
So, I put the additive in and 100 miles later and after about 20 hard accelerations, no CEL. While I am still a bit nervous, it appears the idea of the sticky lifter and additive are potentially affective.
So, all of you out their fighting this issue, stay calm, work the symptoms, listen to the experts and best of luck to you all.
There still is no substitute!
I'm supposing the 20 hard accelerations probably did more for the stuck (or dirty/blocked) lifter than any sort of crap you poured down the filler neck.
Sorry, I don't think BG Motor Oil Additive will eliminate a misfire on #5 cylinder where new plugs and coils will not.
Condensation in the fuel tank can add water to the fuel which can and does under the right conditions cause a misfire. This is neither plug or coil related, so renewing either will make no difference. When the water which lies in the bottom of the tank is sucked up by the fuel pump and runs through the system there is no more poor running and misfire. Adding Heet or an alcohol to the fuel tank will allow the water to mix with the fuel preventing this.
Years ago we would add several ozs. of ATF to free up sticking lifters. This was mainly due to sludge and use of single weight oils. With today's modern lubricants this shouldn't be necessary.
If it worked for you, good. The manual advises against the use of oil additives. In reality they decrease the lubricating properties of oil and can cause other problems like creating deposits on valves and spark plugs.
No offense to any of the responses. I'm still nervous as a ***** in church waiting for the dang CEL to return. Again, another day with no issues. Maybe you are right about actually driving the car, because it was basically stuck in traffic it's whole life.
Hey, the good thing for you all is that when I come back in another 1000 miles whining about the misfire again...or not...you can tell me "I told you so"...or not.
This is a source reference. Confirm exact model applicability in the original material.
