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What voltage at the A/C fan switch

I'm deep, deep into replacing all the A/C components on my '83 SC...barrier hoses, evaporator, both condenser, etc..etc... and just finished the retroaire evaporator fan upgrade. It's been running good for a few days and all of a sudden...bupkiss.

Checked all the fuses under the hood, swapped relays, checked fuses in the back...nada. Using my voltage meter I get 3.6 or so volts at the fan power wire. Is is normal? Can I troubleshoot a bad switch by just jumping power over to one of the fan speed wire (low/med/hi) or should I be using a 12 volt source to see if the fan motor is okay? Did I mention it's all brand spanking new?

Thanks,

Dean

Old 06-24-2011, 06:33 PM
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Need to check voltage at the connector of the blower in the smugglers box:

Compliments of Gerry 86 911 Targa

Current:
Blower (Evap) Motor Lo

Blower Motor Med

Blower Motor High


Voltage at High:


Note this data is off of 84-86 3.2

Also check A/C fues #2, if it is loose due to heat shrinkage.

For my issue I re-placed the fuse block and rails for $26: Fix: 3.2 A/C #2 fuse FINALLY!!!!
__________________
'85 Carrera Targa
Factory Marble Grey/Black * Turbo Tail * 930 Steering Wheel* Sport Seats * 17" Fuchs (r) * 3.4 * 964 Cams * 915 * LSD * Factory SS * Turbo Tie Rods * Bilsteins * Euro Pre-Muff * SW Chip on 4K DME * NGK * Sienes GSK * Targa Body Brace
PCA/POC

Last edited by DRACO A5OG; 06-24-2011 at 06:49 PM..
Old 06-24-2011, 06:45 PM
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Did something get lost in translation? I don't see any numbers?
Old 06-24-2011, 07:10 PM
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Really? you don't see the images? I see 4, No?

Try to reload the page, F5

Quote:
Originally Posted by DRACO A5OG View Post
Current:
Blower (Evap) Motor Lo

Blower Motor Med

Blower Motor High


Voltage at High:
__________________
'85 Carrera Targa
Factory Marble Grey/Black * Turbo Tail * 930 Steering Wheel* Sport Seats * 17" Fuchs (r) * 3.4 * 964 Cams * 915 * LSD * Factory SS * Turbo Tie Rods * Bilsteins * Euro Pre-Muff * SW Chip on 4K DME * NGK * Sienes GSK * Targa Body Brace
PCA/POC

Last edited by DRACO A5OG; 06-24-2011 at 07:24 PM..
Old 06-24-2011, 07:20 PM
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Well,

I still don't see them, but I have solved the problem and thank you for the input. In my case, it ended up being a loose relay. Really barely noticeable that one was sticking out a little more on the fuse box than the others....really hard to notice. Fans are all back on and I'm breathing easier. Now to finish up!
Old 06-24-2011, 08:32 PM
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Cool

__________________
'85 Carrera Targa
Factory Marble Grey/Black * Turbo Tail * 930 Steering Wheel* Sport Seats * 17" Fuchs (r) * 3.4 * 964 Cams * 915 * LSD * Factory SS * Turbo Tie Rods * Bilsteins * Euro Pre-Muff * SW Chip on 4K DME * NGK * Sienes GSK * Targa Body Brace
PCA/POC
Old 06-24-2011, 08:42 PM
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