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whine from the throttle body and 4 seconds of crank before fire?

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3 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis

THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCHwhine from the throttle body and 4 seconds of crank before fire?

Leading reported evidence

Run day like a champ

Performed · outcome unconfirmed

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

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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.

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Performed · outcome unconfirmed · Original poster
The car ran all day like a champ but after an overnight cool down it took 2 attempted cranks at 2 seconds each to fire.
Original post Read captured discussion
whine from the throttle body and 4 seconds of crank before fire?

Frequently discussed work

Disconnect few days, the ecu may be relearning

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

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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
Another thought is that with the battery disconnected for a few days, the ecu may be relearning??
Original post Read captured discussion
whine from the throttle body and 4 seconds of crank before fire?

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Leading evidence: 'Run day like a champ' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Disconnect few days, the ecu may be relearning' (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.

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Disconnect few days, the ecu may be relearning

Suggestion or failed attempt

No successful repair reported for this finding.

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Reported fixes: 0
Unsuccessful attempts: 1
Discussions

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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
Another thought is that with the battery disconnected for a few days, the ecu may be relearning??
Original post Read captured discussion
whine from the throttle body and 4 seconds of crank before fire?

Run day

Suggestion or failed attempt

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
It almost sounded like it needed to build fuel pressure, though the only fuel lines removed where from the back of the A/C compressor and the car had ran all day?
Original post Read captured discussion
whine from the throttle body and 4 seconds of crank before fire?

Frequently discussed actions (3)

These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.

Disconnect few days, the ecu may be relearning

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
Another thought is that with the battery disconnected for a few days, the ecu may be relearning??
Original post Read captured discussion
whine from the throttle body and 4 seconds of crank before fire?

Run day

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
It almost sounded like it needed to build fuel pressure, though the only fuel lines removed where from the back of the A/C compressor and the car had ran all day?
Original post Read captured discussion
whine from the throttle body and 4 seconds of crank before fire?

Run day like a champ

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

Read evidence and context

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
The car ran all day like a champ but after an overnight cool down it took 2 attempted cranks at 2 seconds each to fire.
Original post Read captured discussion
whine from the throttle body and 4 seconds of crank before fire?

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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

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: 20261027T060112Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

I was helping a friend out with his 996. He lives on a dirt road and had an air/oil separator issue I corrected. the oil and dirt combined to make a hard sludge through out his entire intake manifold which was cleaned out. I noticed a buzz/whine coming from his throttle body when the key was in the II position. I think it may be because there is something blocking the throttle from closing all the way and there is resistance on the flap?? Or do they all make that noise? The car ran all day like a champ but after an overnight cool down it took 2 attempted cranks at 2 seconds each to fire. It almost sounded like it needed to build fuel pressure, though the only fuel lines removed where from the back of the A/C compressor and the car had ran all day? Another thought is that with the battery disconnected for a few days, the ecu may be relearning?? Any other thoughts on this would be great, thanks guys!

POST 2Original post

If his is a cable operated throttle the idle air control valve (IACV) does buzz or hum when the key is on, which is normal. If it is an e-gas throttle body then ensure it is completely clean... replacement might be required. As for the hard starting, it could be fuel pressure which can be tested at the fuel rail. If it is cranking slowly then it could be issues with starter, battery, or wiring.

POST 3 / ORIGINAL POSTEROriginal post

Thank you, it is an e-gas, 2001. The slow start sounds exactly like a fuel pressure issue, but my gut is telling me other wise. The only items fuel related that I touched where vacuum line to regulator and the two cooler lines on the A/C. Unless it is ECU related?

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