How to Troubleshoot and Fix the Porsche Radiator Fans

How to Troubleshoot and Fix the Porsche Radiator Fans

If you notice a slight increase in temperature–particularly in traffic or while idling, you may have a problem with one of the front radiator fans. Fortunately, they are easy to repair or replace.
Blog for parts: http://burnerscars.blogspot.com/2016/10/radiator-fans-for-boxster-and-911.html
Cooling System Playlist: https://www.youtube.com/playlist?list=PLiya6G1pHhIY5oUQtcguzN0KqKoY-IGhw

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theplayernkc says:

Another nice vid.

FYI: If you have the Durametric tool, you can use it to test both Speed 1 and Speed 2 of the fans without starting the 986.

Auto ILU says:

Hi! I noticed about a week ago that my Cayman S 987 right radiator fan did not work, another fan rotates at high speed in the 30s-60s cycles. I had seen your video in the past and it came to my mind almost immediately! Thanks to your good video I knew where to look but luckily I found that the stone was just stuck in the fan. I wonder if the breaks of the fans can be partly due to this jamming somehow odd that the electric motor is such a weak point?

R Jeffrey says:

Hi Burner, I'm having similar issues with a 1999 Boxster 986, 2.5ltr,  has no A/c installed.The RH fan wont run when the engine heats up past normal temperature ( the LH side works perfectly fine ) I've replaced the ballast with one I borrowed and if I "jump" the ballast on 30+87 pins the RH fan comes on OK. so it would appear the fan works fine.I've checked all relays and they are fine, along with the C8/10 fuses.It seems strange that one side works fine with an increase in temperature but I'm wondering are there two sets of temp. sensors ?? one left and one right? I cannot think of anything else, the LH/RH fan runs OK when using the jump wires at the relay.Any help would be appreciated.Keep up the good work really enjoy the quality of your videos.Rob

Kjeld Molvig says:

Just learned that fans are not working. Are the relays inexpensive enough to just replace all 4 preemptively on a early Boxster and start from there?

Janet Watt says:

I bought my 04 986 "S" a year ago (Feb 2016). I have watched many of Burner's videos and will say he is the best. Today..Feb 23rd here in Ontario our temps are 16c so super nice for us this time of the year. I removed the front bumper (without any problems) and have cleaned the rads. They were disgusting. Bird feathers mostly and stuff I couldn't recognize.
Who needs a manual when Burner makes things so easy. Thanks man!

Rey Gab says:

I've discovered my fan that is not working by just putting my ear close to the vent. But it took a little while for me to know it.. Very nice video on this. Thank you Burner's Cars for inspiring me to fix it myself…I suggest that you should have tested the fan by simply tapping the 2 wires you cut into the battery to know if the fan motor is working.

Chris Denning says:

As a Porsche tech for over 30 years,I find your videos show the long way to test replace componants.The easy way to check coolant fan operation is to just turn the A/C on,both
fans must run on speed 1,if not replace resistor.

racekar80 says:

Wow, three jack stands in the background but you get under the car without using one!

Matias Fernandez says:

Just quick question… Can anyone tell me how to remove the coolant tank? Mine crack

Matias Fernandez says:

Honestly one of the most helpful video and videos I've come across. Great!

Baerchenization says:

Foreign language fail – what is that part you could change in the alternative called exactly? I can't hear it out, even though you mentioned it 20 times… 😛

RK Ashburn says:

I replaced both fans recently and also found vacuum leak due to hole in heater core after that the temperature at the traffic light does not go beyond 190. It used to be close to 215 prior to doing all these.

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