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Topic Running with Low speed fans not working?? |
Running with Low speed fans not working?? moresquirt - 8 years ago |
Re: Running with Low speed fans not working?? MarcW - 8 years ago |
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moresquirt
From what i have researched regarding the front fans.The low speed comes on at 206 degrees and the high speed comes on at 216 degrees.Both my high speeds work but
both low speed do not.Fuses are good.Would it be ok to just run the car with high speed working only.For 10 degrees is seems like its really not necessary.
Porsche wants close to $300 cdn per Controller or Ballast resistor. Is there a down side to not fixing this.Thx
Re: Running with Low speed fans not working?? moresquirt - 8 years ago |
Re: Running with Low speed fans not working?? moresquirt - 8 years ago |
Re: Running with Low speed fans not working?? MarcW - 8 years ago |
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moresquirt
I guess i am not totally sure its the ballasts.I did check all the fuses and there all good BUT if i hold my fingers on all the Relays and turn the air conditioner on and off i do not
feel or hear any click.I pulled 2 Relays and reversed them but no change,Mine on my 987.1 are different than the 986 layout.Is it possible its the Relays.I need to figure out
what ones are low and what 2 are high speed.There are actually 5 Relays in total.What would the 5th be for?
Re: Running with Low speed fans not working?? moresquirt - 8 years ago |
Re: Running with Low speed fans not working?? MarcW - 8 years ago |
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moresquirt
Hi Marc,thx for feed back.What i have learned so far.The 987 is a totally different animal than the 986.Those Relays have nothing to do with the fans.The 987 has a Controller attached near the
fan on the passenger side.Basically a mini computer.It has the Relays built into it.Its not a Ballast Resistor like the 986.Its approx $300 cdn for the controller.No one sells a after market unit.
What i have not figured out yet,(if someone can comment) is if the fans assemblys have a low and high speed motor or if the controller activates the speed.I am leaning toward the fan having 2 motors.
So this problem could be a few things,the low speed motors on both,the Controller,corosion in the wireing connection from the controller to the fan.I am looking at again today now that i understand
more and check power all the way thru the system.There is also 80 AMP Fuse in the front trunk,passenger side for the Fan but if the high speed both work then i am ruling that out.Keep u posted.
If i havent figured it out by monday then i am taking it in.
Re: Running with Low speed fans not working?? moresquirt - 8 years ago |
Thanks for the update... MarcW - 8 years ago |
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moresquirt
UPDATE: I ended up taking the car in.They were able to get the fans to run on high and low.They hooked up the DME to a computer.Everything appears to work correctly BUT
the strange thing is the low speed fans will still not operate if car is cold and i start it up and turn on the A/C .Nothing happens until the temp is high enough then the low speed will operate.
It did it before last season every time i checked. They are not sure why its not working that way now .FYI they tell me that the 987 have never had issues with the low/high speed Controllers which
are feed info from DME in there shop and they see thousands of boxsters 911 and Caymens they now all come with this new set-up.That seems to be an issue from the past (986 Ballast Resistors)
on 986 (2004 and older) including 911,s.
Re: Wouldn't you niot want the fans on MarcW - 8 years ago |
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mikefocke, '01S Sanford, NC
until everything was warm for emissions reasons? The idea being to get everything in the cooling system to a steady warm state before you turn on the fans so you don't run rich as long.
Re: Running with Low speed fans not working?? moresquirt - 8 years ago |