10 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCH996.2 F.C. P0491 P0492
Reported or suspected cause
line
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
It was the line that runs in front of the alternator between the changeover valve #1 and the one-way check valve Bought new hose and "y" and elbow fittings to replace with new.
Leading evidence: 'line' (1 discussions report identifying this cause; no attributable repair resolution). Across 1 matching discussions, the most frequently mentioned possible cause is 'line' (1 discussions; 1 report identifying it and 0 suggest it). The most frequently discussed action is 'Reconnect vacuum hoses' (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
Found a vacuum line that was pulled out of a fitting, reconnected it and drove it yesterday without any 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 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
OK, the only time I get these two Faults is after driving to full operating temperature and having to stop at a red light and idling more than a minute and half, both F.C activate, engine stay's running smooth, I reset the F.C.
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
OK, the only time I get these two Faults is after driving to full operating temperature and having to stop at a red light and idling more than a minute and half, both F.C activate, engine stay's running smooth, I reset the F.C.
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
It was the line that runs in front of the alternator between the changeover valve #1 and the one-way check valve Bought new hose and "y" and elbow fittings to replace with new.
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
It was the line that runs in front of the alternator between the changeover valve #1 and the one-way check valve Bought new hose and "y" and elbow fittings to replace with new.
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
OK, the only time I get these two Faults is after driving to full operating temperature and having to stop at a red light and idling more than a minute and half, both F.C activate, engine stay's running smooth, I reset the F.C.
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
OK, the only time I get these two Faults is after driving to full operating temperature and having to stop at a red light and idling more than a minute and half, both F.C activate, engine stay's running smooth, I reset the F.C.
These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.
line
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
It was the line that runs in front of the alternator between the changeover valve #1 and the one-way check valve Bought new hose and "y" and elbow fittings to replace with new.
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.
10 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.
0 acknowledgements have no verified action link; they do not establish a repair result.
Generation: 20261026T155324Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
OK, the only time I get these two Faults is after driving to full operating temperature and having to stop at a red light and idling more than a minute and half, both F.C activate, engine stay's running smooth, I reset the F.C. and nothing again till the same thing happens again, never comes on unless at idle for period of time at full temp. any idea's
Thanx Guy's, finally got to work on the car, for the fault codes I started on doing a vacuum test and found a leak from the Changeover valve 1 line going to the Vacuum reservoir. PIA to get too, but done and no other leaks.
I just posted on this problem with an earlier thread, now I find a newer thread. 808Bill, will follow your success with great interest.
So, while this is a PITA to have to watch the CEL and clear codes, is there a risk of damage to the engine by delaying fixing this? I just need to know where to prioritize against other projects.
Found a vacuum line that was pulled out of a fitting, reconnected it and drove it yesterday without any CEL. It was the line that runs in front of the alternator between the changeover valve #1 and the one-way check valve Bought new hose and "y" and elbow fittings to replace with new. Hopefully no leaks further back and i can avoid pulling the alternator/throttle body. Sounds like a good preventative for a later day.
Found a vacuum line that was pulled out of a fitting, reconnected it and drove it yesterday without any CEL. It was the line that runs in front of the alternator between the changeover valve #1 and the one-way check valve Bought new hose and "y" and elbow fittings to replace with new. Hopefully no leaks further back and i can avoid pulling the alternator/throttle body. Sounds like a good preventative for a later day.
This is a source reference. Confirm exact model applicability in the original material.
