3 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHHigh idle and CEL P0507 P1126 P1128 P1130 P1133
Leading reported evidence
Run ever
Suggestion or failed attempt
No successful repair reported for this finding.
0
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0
Unsuccessful attempts
1
Discussions
Read evidence and context
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Discussions that contain suggestions
1
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Suggestion · Original poster
Decided to pull out the carb cleaner and with the engine running ever and with extreme caution sprayed the exterior of various vacuum hose connections.
Leading evidence: 'Run ever' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Run ever' (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.
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Run ever
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
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
Decided to pull out the carb cleaner and with the engine running ever and with extreme caution sprayed the exterior of various vacuum hose connections.
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.
3 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
Rennlist: 1 discussions
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Generation: 20261026T190023Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
Searching on the forum I didn't find much on this so I thought I would add it in here in case it helps someone track down an idle issue.
I have had my 2000 C2 since January of this year and I have always noticed a slightly hunting idle especially when cold.
I replaced my air filter and oil last weekend and everything seemed fine. Then after a couple of drives, my idle started creeping up a progressively and got worse reaching 1500 rpm at one point and throwing a check engine light.
The car also had a rough idle.
I pulled the codes and came up with CEL P0507 P1126 P1128 P1130 P1133. High idle and lean condition at the O2 sensors.
I figured it was a vacuum leak and immediately thought I had damaged the oil fill tube.
Upon inspection, the oil fill tube appeared intact, all the vacuum hoses seemed fine, and I couldn't really hear a hiss from a anywhere in particular.
I was really perplexed how swapping an air filter would cause such an air leak. I had thought it could be the AOS, but no excessive crankcase vacuum or smoking tailpipes. It was just too much of a coincidence.
I removed the airbox, intake hose and throttle body, gave it a good cleaning and reassembled everything but still had the same condition.
Decided to pull out the carb cleaner and with the engine running ever and with extreme caution sprayed the exterior of various vacuum hose connections. I made my way around the engine and when I sprayed the bellows that connect the plenum to the intake manifold, I got a surge in RPMs. Found my leak.
I removed the airbox, throttle body and upon inspection found that the right side bellow hose clamps were loose and had slightly moved off the plenum.
I loosened all four clamps for both bellows, reentered the plenum, tightened them, reinstalled the throttle body and airbox.
The car idles better than before and the codes have all cleared.
With a history of an AOS being replaced by the previous owner 10K ago, I imagine they overlooked retightening the bellow clamp and it slowly made its way loose.
Great DIY! I can't help but wonder had you brought it in to a Dealer, (or unscrupulous Indy) what they would have found? I think at the very minimum; MAF sensor ($450), Intake manifold Air Tube ($170.00), Throttle body? Intake plenum? a couple clamps and 2 or three hours labor... Well over a grand
Amazing what you can do with a nut driver and a little initiative (at least sometimes)
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