Pelican Parts Forums - A/C Inoperative.. HELP PLEASE!!

Pelican Parts Forums (http://forums.pelicanparts.com/)

- Porsche 911 Technical Forum (http://forums.pelicanparts.com/porsche-911-technical-forum/)

- - A/C Inoperative.. HELP PLEASE!! (http://forums.pelicanparts.com/porsche-911-technical-forum/709306-c-inoperative-help-please.html)

I want to thank all of you for the insight. I'll be tackling this issue this weekend, and now have a major head-start in figuring it out.

Thanks again!....even you, Bob.

Cheers,
Jay

Ok folks, we have a winner! The problem was with the current limiter as "Aerodyn Lou" mentioned. I bypassed this and now both A/C and seat adjustment switches work! Now the question: Should I replace the current limiter or "other" or just leave it as is (bypassed) and count on the fuse to do it's job? Also, this lead comes out of the #3 fuse location not #2, should I re-route?

Again, Thanks for all of the insight and help. With it, I was able to understand the circuitry better, and have a head-start in troubleshooting. THANKS MUCH! (Even you Bob).

Jay B.

Quote:

Originally Posted by aerodyn930 (Post 7008509)

Hello Jay, Welcome to the forum, I would recommend checking the current limiter that appears to be controlling the current in your A/C circuit, It is the square device above fuse number 2, These are designed to open the circuit once the rated current is reached , ( like a fuse but these are designed to re-set after a brief cool down period), Check for voltage in and out of this device as a starting point, This BTW is not stock , It is a way around a resistive fuse holder,

Hope this helps, Lou

Hello Jay, Glad it worked, My advise is to either replace the current limiter with a new one ( you can get those at napa) or ideally a heavy duty ATO fuse holder and fit a 25 amp fuse in it, I would like to caution you that bypassing it leaves you with no overload/short protection, That current limiter is feeding from the top(live) side of the fuse panel so the fuse below gives those circuits no protection,

Let us know how everything goes,, Lou

Ok, I can go with replacing the current limiter or ATO fuse, but wouldn't routing that lead back to the bottom of fuse 2 or 3 reinstate the fuse protection?

Thanks in advance....circuitry is not my strong suit.

Jay

Quote:

Originally Posted by aerodyn930 (Post 7012153)

Yes, by putting back to OEM specs the fuse will work as designed, but I wonder why they did this?

I assume due to the resistance of the fuse holder section. In any case if it starts blowing the fuse you will now know why.

Here is my Fix it Thread: http://forums.pelicanparts.com/porsche-911-technical-forum/613548-fix-3-2-c-2-fuse-finally.html

Credit goes to Gerry above :D Thanks Dr Gerry :D

+1 on Draco's tip, To restore the circuit thru the factory fuse holder you should replace that section of the fuse holder with a new one, loose rivets are the usual culprit here, So until you can install one of these keep the circuit wired outside of the fuse holder and use a ATO fuse holder for protection.

glad it is all coming together:)

Lou