5 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCH996 radiator fan removal / replacement
Reported or suspected cause
stuck brushes in the motor
Reported cause
No successful repair reported for this finding.
1
Identified cause
0
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0
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Reported cause · Original poster
In my case, I had fan that refused to work at all, which turned out to be stuck brushes in the motor.
Leading evidence: 'stuck brushes in the motor' (1 discussions report identifying this cause; no attributable repair resolution). Across 1 matching discussions, the most frequently mentioned possible cause is 'stuck brushes in the motor' (1 discussions; 1 report identifying it and 0 suggest it). The most frequently discussed action is 'Replace fan and resistor together' (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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Suggestion
Thanks, my low speed fan on the drivers side doesn't work, so I'm thinking about replacing both the fan and resistor together.
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Suggestion · Original poster
I still have this job to do, but at least now both fans run when needed.
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There is an excellent thread in the turbo forum that covers this way of getting to the radiator fan, however I thought it might help folks in the future if the title covered all words they may be searching with.
The point is that the fans can be removed without removing the radiator - and the subsequent coolant system draining/refilling.
In my case, I had fan that refused to work at all, which turned out to be stuck brushes in the motor.
1. remove bumper and wheel liner
2. unbolt A/C cooler, move it out of the way, and support it
3. remove clips on out-board side of radiator, and support it
(in both cases, I used a bungee. be careful of your paint)
3. unplug fan
4. work the small rad hose out of the clips in the support bracket
5. undo the three bolts holding the support bracket in place (two underneath, one at front of wheel arch)
6. gently work the bracket and fan cowl down and out
7. remove the clips that hold the fan housing to the radiator and gently remove it.
Install is the 'gentle' reversing of the removal.
Having had the motor apart, I understand why Porsche even recommends soldering in new resistors. The wires are directly connected into the motor, and there is no way to easily remove/replace them.
Thanks, my low speed fan on the drivers side doesn't work, so I'm thinking about replacing both the fan and resistor together. I'm surprised at how hot my '99 runs even with the lower temp Tstat.
On my e36M3 with the mechanical fan removed, all I have to do is turn on the ac to keep it cool in traffic or autocrossing.
I think it still quite worthwhile to do the resistor separately, just requires solder and heat shrink. I still have this job to do, but at least now both fans run when needed.
I was surprised by how much brush there is in the motor. Mine were just jammed up with dust, and not moving.
