11 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHCEL P0418
Leading reported evidence
Replace of the valves, the first one
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
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
I ended up replacing both of the valves, the first one that's inline and the second valve that screws into the exhaust manifold.
Leading evidence: 'Replace of the valves, the first one' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Disconnect hose and you'll hear it' (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
Replaced both valves and check engine light came back on.
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
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 contain suggestions
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.
Suggestion
Good time to replace all the brittle spaghetti hoses.
Replace sai pump quite easily without taking anything else apart
Suggestion or failed attempt
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 contain suggestions
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.
Suggestion
You can replace the SAI pump quite easily without taking anything else apart.
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.
11 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
All went back to normal once the wiring changed out by the shop.
I have C4S 2003 3.6L. I tried searching and best luck I had so far was that the issue involves the SAI, but beyond that not much.
Prior to this I was having CEL Catalyst failure which has been cleared and resolved. I�m not sure if the SAI motor burned itself out trying to pump more air in to compensate?
any help would be greatly appreciated.
Indeed, you can hear it running. If in doubt, on a cold start you can put your hand on it and feel it running. This is the first place to start. You can replace the SAI pump quite easily without taking anything else apart.
I had a CEL for SAI system. I ended up replacing both of the valves, the first one that's inline and the second valve that screws into the exhaust manifold. They were both pretty plugged up with carbon deposits. You can get both valves, genuine Porsche OEM for around $250. Once you remove the alternator, you can access everything quite easily.
Replaced both valves and check engine light came back on. Ended up tracing every vacuum line from the SAI diagram and found the culprit at the back side of the vacuum tank (sits directly behind the alternator). I've still never actually seen it attached. I took out the vacuum tank and checked out the attachment point and made sure it wasn't broken. Put the tank back and plugged the vacuum line back up by feel. I also ended up putting a zip tie around the vacuum line manifold and the vacuum tank to hold everything in place.
if you are removing you alternator, then read up on the correct procedure and be very careful when messing around by the vacuum tubes. They crack quite easily and then you have all kinds of trouble on your hands. Good luck.
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