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shacky 11-22-2020 03:10 PM
Replacement front radiator fans
 
Been dealing with slight overheating after long idling. Switched relays around with no effect. Turning on A/C and recirculate does not turn on fans. Have witnessed drive side fan come on for a minute at most.

Thinking I need to replace fan ballists and probably fans too.

I see feedback on non Porsche fans that they do not come balanced and have quite a bit of vibration especially in high speed mode,

Any advice is very welcome 🙏

blue62 11-22-2020 03:46 PM
Quote:
Originally Posted by shacky (Post 626980)
Been dealing with slight overheating after long idling. Switched relays around with no effect. Turning on A/C and recirculate does not turn on fans. Have witnessed drive side fan come on for a minute at most.

Thinking I need to replace fan ballists and probably fans too.

I see feedback on non Porsche fans that they do not come balanced and have quite a bit of vibration especially in high speed mode,

Any advice is very welcome ��
Have you scanned the OBDII live data to see what temps you are reaching??
Also what temps the fans are triggering at??


Bentley book says:
Low speed kicks on above -206.2 Degrees F or A/C switched on.
High speed kicks on above 215.6 Degrees F .

So if they don't kick on with low speed when you turn on the A/C it could be the ballists

shacky 11-22-2020 03:55 PM
Quote:
Originally Posted by blue62 (Post 626983)
Have you scanned the OBDII live data to see what temps you are reaching??
Also what temps the fans are triggering at??

Bentley book says:
Low speed kicks on above -206.2 Degrees F or A/C switched on.
High speed kicks on above 215.6 Degrees F .
I lost me OBDII reader 🙄. Those temps seem high! But low fans not coming on with A/C. BTW do you have to be on recirc and A/C to turn on fans? Someone told me that but I always thought just turning on A/C does the trick.

blue62 11-22-2020 04:22 PM
Quote:
Originally Posted by shacky (Post 626984)
I lost me OBDII reader 🙄. Those temps seem high! But low fans not coming on with A/C. BTW do you have to be on recirc and A/C to turn on fans? Someone told me that but I always thought just turning on A/C does the trick.
Just A/C on;)
Nope those temps are the spec. for the Boxster.
Taken from the Bentley service manual
Right were my 2000S kicks the fans on at.

shacky 11-22-2020 04:29 PM
Quote:
Originally Posted by blue62 (Post 626985)
Just A/C on;)
Nope those temps are the spec. for the Boxster.
Taken from the Bentley service manual
Right were my 2000S kicks the fans on at.
Not the highest in this pic. It will go up to end of the “0”. I guess that would be over 200

shacky 11-22-2020 04:32 PM
Can’t attach pic

blue62 11-22-2020 05:35 PM
Quote:
Originally Posted by shacky (Post 626987)
Can’t attach pic
IF your trying to show the temp gauge on your instrument panel that reading is not always the temp that the ECU/DME sees.
That is why I asked in a previous post if you had an OBDII scanner to read your live data.
The ECU/DME sees the temp the temp sensor is reading not the temp the gauge on the instrument panel is showing;)

Anker 11-22-2020 05:41 PM
If it doesn't turn on with A/C, but turns on high when hot, then it is most likely either the ballast resistor, or the relay. If it doesn't turn on ever, then it is most probably the fan itself.

shacky 11-22-2020 08:57 PM
Quote:
Originally Posted by Anker (Post 626991)
If it doesn't turn on with A/C, but turns on high when hot, then it is most likely either the ballast resistor, or the relay. If it doesn't turn on ever, then it is most probably the fan itself.
I swapped the low and high relays for both left and right and no difference. I did not try jumping relay plug.

mikesz 11-23-2020 08:15 AM
When I had issues with my fans I used a jumper in the relay socket to figure out one fan wasnt working at all the other was only on 1 speed. Pedro has a good diy that is what I used as a guide.


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