10-20-2016, 03:37 PM
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#1
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Registered User
Join Date: Sep 2008
Location: Florida
Posts: 2,497
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Nope. It's still your ignition switch (I promise).
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10-21-2016, 09:03 AM
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#2
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Registered User
Join Date: Aug 2009
Posts: 1,466
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Working on the same problem. It's not your ignition switch if your rear window defogger works, or your windshield wipers work, or your headlights work.
I was down to the heater resistor and blower. The heater resistor can be bypased by pulling the plug. (You'll have to take out the glove box Passenger side vent and Passenger side vent duct) the resistor is red and above and to the left of the blower. The plug can be released by pressing in the 2 inner tab and pulling it out, or removing the resistor for better access. Make a jumper out of a fuse or a short piece of wire and 2, 1/4" spade connectors. Turn on your key, if the blower runs it's your resistor. If the blower does not run check for 12VDC on the Blue Black wire on the blower plug and the brown red wire. If there the blower has failed. If the 12 VDC is not there check the heater relay No 18 bottom row left relay under dash. My blower died.
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2003 Black 986. modified for Advanced level HPDE and open track days.
* 3.6L LN block, 06 heads, Carrillo H rods, IDP with 987 intake, Oil mods, LN IMS. * Spec II Clutch, 3.2L S Spec P-P FW. * D2 shocks, GT3 arms & and links, Spacers front and rear * Weight reduced, No carpet, AC deleted, Remote PS pump, PS pump deleted. Recaro Pole position seats, Brey crouse ext. 5 point harness, NHP sport exhaust
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10-21-2016, 10:57 AM
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#3
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Registered User
Join Date: Aug 2009
Posts: 1,466
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As a note the AC snow flake will not light if the motor is not running.
After removing the blower found a rusted broken spring that pulls the + brush against the armature.
__________________
2003 Black 986. modified for Advanced level HPDE and open track days.
* 3.6L LN block, 06 heads, Carrillo H rods, IDP with 987 intake, Oil mods, LN IMS. * Spec II Clutch, 3.2L S Spec P-P FW. * D2 shocks, GT3 arms & and links, Spacers front and rear * Weight reduced, No carpet, AC deleted, Remote PS pump, PS pump deleted. Recaro Pole position seats, Brey crouse ext. 5 point harness, NHP sport exhaust
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10-21-2016, 03:06 PM
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#4
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Registered User
Join Date: Aug 2009
Posts: 1,466
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A new blower motor installed and Mine is fixed. Napa 6552715. it was $103.20 after buying a Napa shopping bag promotion that gave 20% off the entire purchase.
__________________
2003 Black 986. modified for Advanced level HPDE and open track days.
* 3.6L LN block, 06 heads, Carrillo H rods, IDP with 987 intake, Oil mods, LN IMS. * Spec II Clutch, 3.2L S Spec P-P FW. * D2 shocks, GT3 arms & and links, Spacers front and rear * Weight reduced, No carpet, AC deleted, Remote PS pump, PS pump deleted. Recaro Pole position seats, Brey crouse ext. 5 point harness, NHP sport exhaust
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07-15-2018, 07:47 AM
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#5
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Porschephile
Join Date: Jun 2007
Location: Portland, Maine
Posts: 343
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Help!
Reviving the this thread as it most closely describes what I am experiencing. A/C was blowing warm so I had my local Independent correctly evacuate and recharge the system. Worked perfect and blew ICE cold. 2 days later I hop in the car and the display works but no fan and no snowflake. I’m mechanically ok to wrench on things but electronics are my kryptonite. Diagnosing this on about a 5th grade level. Hopefully you guys can help. Checked the fuse(s)? The diagram showed 2? Either way fuses are fine. Reading up on relays now...
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2004 Porsche Boxster S
Portland, Maine
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07-15-2018, 08:17 AM
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#6
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Porschephile
Join Date: Jun 2007
Location: Portland, Maine
Posts: 343
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So happy
Switched out the engine fan relay with the a/c relay AND IT WORKED!!!! So happy right now.
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2004 Porsche Boxster S
Portland, Maine
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07-15-2018, 02:22 PM
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#7
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Registered User
Join Date: May 2016
Location: Northern Indiana
Posts: 410
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Quote:
Originally Posted by Tomikaze
Switched out the engine fan relay with the a/c relay AND IT WORKED!!!! So happy right now.
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Good thinking...and something I wouldn't have thought of until I was about 8 hours into stabbing around with my multimeter. 
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