16 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHRadiator Fan Resistors Died - Part Number Needed
Leading reported evidence
Check relays
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.
Leading evidence: 'Check relays' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, the most frequently mentioned possible cause is 'actually cause by the electrical fans' (1 discussions; 0 report identifying it and 1 suggest it). The most frequently discussed action is 'Check relays' (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 suspect a cause
1
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Suspected cause · Original poster
I wouldn't be surprised if my intermittent resistor issue was actually cause by the electrical fans that were simply being overloaded by the ambient temperatures and all the dirt inside of them.
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
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Suggestion
Have you checked relays #19 and #21 whether they click when a/c is ON?
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
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Suggestion · Original poster
Conventional knowledge said to replace only my resistors, but my fan motors were pretty filthy (1999 with 67,000 miles).
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
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Suggestion
If you can cut and splice, you can also replace the resistor with a generic resistor.
These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.
actually cause by the electrical fans
No successful repair reported for this finding.
0
Identified cause
1
Suspected cause
0
Reported fixes
Read evidence and context
Discussions that suspect a cause
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.
Suspected cause · Original poster
I wouldn't be surprised if my intermittent resistor issue was actually cause by the electrical fans that were simply being overloaded by the ambient temperatures and all the dirt inside of them.
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.
16 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: 20261026T142254Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
As the title says, they are both kaput. The fans come on high when the engine is hot and the A/C is running, but they don't operate in low speed anymore.
I read elsewhere that the fan assembly isn't much more expensive than the resistors. Can someone provide a part number for the assembly? I can't seem to locate it.
Thanks.
Just add "Bosch" to the p/n of the radiator fan when you google. It's model specific I think. This is one example
http://www.rmeuropean.com/Part-Numbe..._94E6B777.aspx
If you can cut and splice, you can also replace the resistor with a generic resistor.
I just had the same issue. The OEM resistors are 0.5Ω 100W, so I bought some 0.5Ω 100W resistors from amazon for $6 each and crimped them into place after cutting the old ones out. The resistors are accessible from under the car, I didn't remove the wheel liner or anything. It is a bit tight down there and the wires don't have that much slack but its a pretty easy job.
So my low speed fan setting is mysteriously working again. Haven't even touched the resistors or the fans yet. Strange....
I wonder if the resistors short out when the outside ambient temps are above 85 or 90 degrees? It's now cooled to the low 80s here recently.
Usually it's the resistor. A lot of times the resistors go bad and usually don't come back to life, but it can happen.
996-616-101-00 here
is the resistor part number.
Vertex, a forum sponsor if I'm not mistaken, has a great deal for new Bosch fans for $135 each on Amazon. I went with that and did the install yesterday.
Holy hell did that install suck. It would have been easier to perform by removing the radiators, but I didn't want to deal with the mess of coolant and hoses nor am I equipped to handle that. Plus there's not a lot of info available on the internet to guide you with the removal and reinstall. The one I did find was short and glossed over much detail involved.
Lessons learned:
- remove the front wheel for each side you work on. You'll need all the spare room you can get.
- DON'T remove the
entire
wheel liner, you only need to be able to peel away the portion towards the front of the car.
- there's a thin, body-colored structural support rod or bracket that mounts between the chassis and just below the headlight support. It runs diagonally just behind the fan area and I recommend you remove it. You can get the fans out without doing so but I don't see how you'll get them back in.
- remove the structural assembly that supports the radiators, condensers and fans. There are two bolts underneath the forward portion of the car and one #13mm nut inside the wheel area next to the above-mentioned structural support rod. Make sure you have the radiator and condenser supported with wire, zipties, etc. before removing this important piece.
Conventional knowledge said to replace only my resistors, but my fan motors were pretty filthy (1999 with 67,000 miles). I wouldn't be surprised if my intermittent resistor issue was actually cause by the electrical fans that were simply being overloaded by the ambient temperatures and all the dirt inside of them.
