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Planet-9

Alternator Pulley Failure (987.1)

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Original source
6 captured repliesPartial discussion capture · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCHAlternator Pulley Failure (987.1)

Leading reported evidence

Check pulleys and everything "seemed" ok

Performed · outcome unconfirmed

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 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

Checked all the pulleys and everything "seemed" ok.

Original post Read captured discussion
Alternator Pulley Failure (987.1)
Frequently discussed work

Check belts and pulleys

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

Just a heads up on checking your belts and pulleys.

Original post Read captured discussion
Alternator Pulley Failure (987.1)
Read full discussion summary

Leading evidence: 'Check pulleys and everything "seemed" ok' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Check belts and pulleys' (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.

Read captured replies

1 matching discussions · 6 captured posts examined · 1 partial discussions

Compare 4 other evidence results

Replace pulley and everything was

Performed · outcome unconfirmed

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 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

replaced the pulley and everything was fixed.

Original post Read captured discussion
Alternator Pulley Failure (987.1)

Check belts and pulleys

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

Just a heads up on checking your belts and pulleys.

Original post Read captured discussion
Alternator Pulley Failure (987.1)

Check belts once in a while

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

Just a heads up and check your belts once in a while.

Original post Read captured discussion
Alternator Pulley Failure (987.1)

Replace belts as a precaution

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

Gates the manufacturer suggested to replace it whenever you replace the belts as a precaution.

Original post Read captured discussion
Alternator Pulley Failure (987.1)
Frequently discussed actions (5)

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

Check belts and pulleys

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

Just a heads up on checking your belts and pulleys.

Original post Read captured discussion
Alternator Pulley Failure (987.1)

Check belts once in a while

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

Just a heads up and check your belts once in a while.

Original post Read captured discussion
Alternator Pulley Failure (987.1)

Check pulleys and everything "seemed" ok

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

Checked all the pulleys and everything "seemed" ok.

Original post Read captured discussion
Alternator Pulley Failure (987.1)

Replace belts as a precaution

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

Gates the manufacturer suggested to replace it whenever you replace the belts as a precaution.

Original post Read captured discussion
Alternator Pulley Failure (987.1)

Replace pulley and everything was

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

replaced the pulley and everything was fixed.

Original post Read captured discussion
Alternator Pulley Failure (987.1)
Coverage and how to read this overview

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.

  • Planet-9: 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: 20261026T122219Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1Original post

Just a heads up on checking your belts and pulleys. I was about to go to a car meet yesterday morning when after I started my car, my steering felt heavy and the warning light came on about Battery/ Alternator check. Opened the rear access panel and saw that my belt came off. Checked all the pulleys and everything "seemed" ok. I had an old belt to try to put on to see if anything was wrong and found out that the Alternator pulley "slid" forward, became misaligned and therefore throwing the belt off. I ordered a new pulley and belt and will replace it when it gets here. Just a heads up and check your belts once in a while. I replaced mine at 60k per the required maintenance -I'm at 95k mi now. Just curious if anyone has had the same problem.

POST 2Original post

I replaced mine 3 weeks ago. I only found out when I saw on my car DVR that my car was running at 11.8V, 11.2v when engine is off. replaced the pulley and everything was fixed. back to 13.2v when running. ( but i think it is still a bit low?) my pulley still looked like new when i replaced. not even close to what your pulley looks like haha.

POST 3Original post

I replaced it today. It took some time as I had to soak the old one with WD40 as it would not budge. Its pretty straight forward but you need a special tool for it. As you can see, the inner mechanism failed and the top piece broke off which caused it to slide forward. Gates the manufacturer suggested to replace it whenever you replace the belts as a precaution. Its only $50 bux so its not bad for a piece of mind.

POST 4Original post

hey olivertan, what were the symptoms you had before you decided to change? is it only low voltage? mine is a 987.2 and running is 14.2v according to my OBD meter. shifterkartracer, is this accessible & replaceable from the panel behind the seats? and thanks for sharing... :cheers:

POST 5Original post

i had low voltage. car was running at 11.8v when engine is on, and 11.3 when engine off. so i figured the alternator wasnt charging the battery. the problem now is that without any load to the battery, i measure the alternator at 14v. but when its loaded, the voltage is now at only 12.5 to 13v , is this normal?

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