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Cooling fans/Coolant temperature

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

THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCHCooling fans/Coolant temperature

Leading reported evidence

Test relays and all of them seem

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.

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
I have tested all the relays and all of them seem to operate.
Original post Read captured discussion
Cooling fans/Coolant temperature

Frequently discussed work

Run cooling fans don't appear

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
When I switch the AC on with the engine running the cooling fans don't appear to come on.
Original post Read captured discussion
Cooling fans/Coolant temperature

Read full discussion summary

Leading evidence: 'Test relays and all of them seem' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Run cooling fans don't appear' (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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1 matching discussions · 8 captured posts examined · 0 partial discussions

Compare 3 other evidence results

Run cooling fans don't appear

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
When I switch the AC on with the engine running the cooling fans don't appear to come on.
Original post Read captured discussion
Cooling fans/Coolant temperature

Run reguardless of wether the a/c system is actually working

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
A/C on and the fans will run reguardless of wether the a/c system is actually working ..
Original post Read captured discussion
Cooling fans/Coolant temperature

Use obc

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
I have also searched for an article on how to use the OBC to get actual coolant temperature readings which I came across before but haven't been able to find it.
Original post Read captured discussion
Cooling fans/Coolant temperature

Frequently discussed actions (4)

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

Run cooling fans don't appear

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
When I switch the AC on with the engine running the cooling fans don't appear to come on.
Original post Read captured discussion
Cooling fans/Coolant temperature

Run reguardless of wether the a/c system is actually working

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
A/C on and the fans will run reguardless of wether the a/c system is actually working ..
Original post Read captured discussion
Cooling fans/Coolant temperature

Test relays and all of them seem

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
I have tested all the relays and all of them seem to operate.
Original post Read captured discussion
Cooling fans/Coolant temperature

Use obc

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
I have also searched for an article on how to use the OBC to get actual coolant temperature readings which I came across before but haven't been able to find it.
Original post Read captured discussion
Cooling fans/Coolant temperature

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.

8 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.

911uk: 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: 20261026T142254Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

When I switch the AC on with the engine running the cooling fans don't appear to come on. The fans will come on when the coolant temperature reaches the trigger point. I have tested all the relays and all of them seem to operate. How can I tell if the AC Compressor clutch is engaging and where is the electrical connection for the compressor? My Bentley manual says that it is on the left side of the engine compartment - a big help! The air from the AC system is not cold. I have also searched for an article on how to use the OBC to get actual coolant temperature readings which I came across before but haven't been able to find it. Can anyone post a link, please? Thanks, Don.

POST 2Original post

Your fans come on regardless of compressor clutch engaging. Your ballast resistors are goosed. You can buy genuine ones at around £80 each or get ones from rsonline for £8 each. Do a search on here on what to do.

POST 3 / ORIGINAL POSTEROriginal post

If the ballast resistors were faulty would that not prevent the fans coming on at all?

POST 4Original post

There are 2 speeds .. First is A/C on OR engine temp of about 95 degrees. Second is engine temp of about 105 degrees . A/C on and the fans will run reguardless of wether the a/c system is actually working .. its a default to turn them on . Resistors are the norm fault for no low speed / stage one working .

POST 5Original post

No.

POST 6Original post

Just done mine for same fault, took a punt on these at 100W and 0.5R and they work a treat for £1.69 each, just took a week or so to arrive. https://www.ebay.co.uk/itm/50W-100W...var=671208182868&_trksid=p2057872.m2749.l2649

POST 7Original post

A delayed edit to my first post to add the diagram

POST 8 / ORIGINAL POSTEROriginal post

Thanks for the responses. Don.

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