12 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHHigh pitched buzzing sound
Leading reported evidence
Lubricate sai pump
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
There is an article on Renntech about re-lubricating the SAI pump.
Leading evidence: 'Lubricate sai pump' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Lubricate sai pump' (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 · Original poster
Thought I read somewhere that this thing uses sealed bearings.
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.
12 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
Started the car, moved it out of the garage and switched off. Worked in the garage for maybe about an hour then started the car and bought it back in.......then.......a VERY high pitched kind of buzzing sound coming out of the engine bay. Idle was smooth and no other noises. After about 1 minute, noise went away?? Didn't get a chance to see if the noise varied with revs.
Any ideas folks?
IMS - bearing gonna BLOW!!!! DON'T DRIVE IT!!! Flatbed it to the nearest dealer. (Sorry, just wanted to beat the doom Sayers)
Normal, it's probably the Secondary Air Injection pump. (SAI)
SAI comes on for ~1 minute on cold start to help light the Cats. It can also come on at other times to help keep the cats at temp. They sound like angry mini vacuums.
There is an article on Renntech about re-lubricating the SAI pump. KrazyK wrote that article.
All pumps should be the same. It is a generic Bosch pump, verify the part number for compatibility.
Sorry but I can't find anything re what/who you're suggesting. I've not used "renntech" but have tried to do a search for renntech + SAI pump and only come up with infromation about whare the pump is and how to remove it.......nothing about how to R&R the thing??
