6 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHCEL P0507
Reported or suspected cause
oil cap too
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
FYI I had a similar issue a while back and it turned out to be the oil cap too:
Leading evidence: 'oil cap too' (1 discussions report identifying this cause; no attributable repair resolution). Across 1 matching discussions, the most frequently mentioned possible cause is 'oil cap too' (1 discussions; 1 report identifying it and 0 suggest it). The most frequently discussed action is 'Disconnect maf and see if engine behaves the same' (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 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
(In some cases a knowledgeable DIY'er can disconnect the MAF and see if engine behaves the same.
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.
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.
6 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: 20261027T031046Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
So my car through a CEL. The car was idling high (1100rmp), pulled the CEL and see P0507 only. CEL is for high idle (no surprise). I cleared the CEL with the OBDII reader. The next few times the car started and immediately died. (cannot hold idle). If I start the car and then give it some gas to keep it going after a little driving it idles on its own although not at a consistent speed. Now after 6-7 starts it doesn't seem to stall after start up but the idle is high again 1050-1100 rpm. However this time it has not thrown the CEL yet.
I have a warranty on the car so I plan on taking it in to have it looked at.
First question: What is going on? some sensor the idle system uses has gone bad?
Second Question: What do I tell the dealer? It through a cell but I erased it? Do I wait to take it in until the CEL comes on again?
thoughts?
Thanks,
Andy
to reproduce the high idle when you take the car in. What you don't want to do is deviate from what you've been doing and then find out the high idle symptom fails to appear.
If MAF is suspected dealership can query MAF for its adaptation values and know soon enough if MAF acting up.
(In some cases a knowledgeable DIY'er can disconnect the MAF and see if engine behaves the same. If if does, then chances are the problem is not related to MAF.)
However, with car/engine still under warranty I'd not waste too much time trying to self-diagnose source of troubles. If the symptom is the precursor to serious trouble you could make things worse fussing around on your own.
No need to wait for a CEL again. If idle still high chances are CEL will show up very soon anyhow.
Best get the car in pronto.
Sincerely,
Macster.
I found the problem and wanted to post a possible fix for others that might get a P0507 code. Turns out the oil fill cap was not put on tight after the last oil change. This caused a vacuum issue and triggered P0507. Tightened the cap, smooth normal idle returns, ~6-7 starts later and the CEL went out.
Andy
Glad you found the issue Andy.
FYI I had a similar issue a while back and it turned out to be the oil cap too:
https://rennlist.com/forums/showthre...0&goto=newpost
This is a source reference. Confirm exact model applicability in the original material.
