8 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHIAC (P1551 code)
Leading reported evidence
Run code reader--p1551 (iac) and p1514 (throttle adjuster) codes
Performed · outcome unconfirmed
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
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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
Ran a code reader--P1551 (IAC) and P1514 (Throttle Adjuster) codes.
Leading evidence: 'Run code reader--p1551 (iac) and p1514 (throttle adjuster) codes' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Clean be taken off the motor' (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
Thanks Ahsai--you helped me out again (my third radiator project used your drain the cooling system technique) Tom
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 · Original poster
And can the "flapper" which I'm cleaning be taken off the motor which I don't want to bother?
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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0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
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Suggestion · Original poster
I did have to repair the brittle thin gasket with a couple of CA dots and got things back together without a hitch.
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 · Original poster
I was at the track this past Th/Fr and last run of the day the CEL came on.
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.
0 acknowledgements have no verified action link; they do not establish a repair result.
Generation: 20261027T005001Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
Hello all--a newbie here with only a few posts but have made great use of past postings for a bunch of DIY projects. I don't see any posts on the Idle Control Valve and code P1551 in the 996 forum so am creating one.
I was at the track this past Th/Fr and last run of the day the CEL came on. Ran a code reader--P1551 (IAC) and P1514 (Throttle Adjuster) codes. So I drove home without worry and I dutifully priced out the IAC and at $600+ thought it worth asking the community if anyone has experience with IAC codes.
I'll pull covers off this afternoon and get a visual--perhaps it's dirty? I have no idea what to begin thinking about other than replace or maybe clean it off. So please, any thoughts or experience is appreciated.
Tom
It's dirty for sure--any idea what I'd clean it with? Carb "gumout"? And can the "flapper" which I'm cleaning be taken off the motor which I don't want to bother? Any ideas?
Also, I see this part on carpartsdiscounts.com for $244.
https://www.carpartsdiscount.com/idl...87&sub=Carrera
You can try to activate it using a 9v or 12v battery and it should move freely. If not, you need to clean it with carb cleaner.
See post #4 here
http://www.renntech.org/forums/topic...mode/?p=146444
Thank you that's a big help--I'll take a look in the am and see what looks like a ground versus voltage in line on the connector. Perhaps it will be obvious. Tom
I cleaned out the IAC with a bunch of rounds of gumout carb cleaner--with paper towels and q-tips to get the edges and flap clean. Tested using a 12 power supply and it all performed as expected--fast and free moving (not sure what amperage the servo was looking for but 10a quickly didn't do any harm it seems).
I did have to repair the brittle thin gasket with a couple of CA dots and got things back together without a hitch. Cleared the codes, fired it up and it idled beautifully. I didn't mention that it idled terribly once the CEL came on--stalled when taking my foot off the gas and was lurching as well. Most pronounced with the car wasn't hot from the track. Anyway--all seems pretty nice and smooth which feels great.
Thanks Ahsai--you helped me out again (my third radiator project used your drain the cooling system technique) Tom
