Just starting to do my new [to me ] toy-probably the last at my age. Objective os to make it a daily driver and the Auto thing doesn't work. Indications are that it was failing since the rod connecting auto to manual emergency lever wasgone. Anyway Pelican can't help when I asked how to regress to manual. Does anyone have the technique? Or am I out of my head? No cracks please. Also where can I get 78 ELECTRIC DIAGRAMS?

 

[quote]<strong> Also where can I get 78 ELECTRIC DIAGRAMS? </strong><hr></blockquote>

Of course the factory manuals, the second set of 4 binders, about $175. Bentley makes a "911SC Maintenance Manual", good source of information, around $75 via internet (list $120).

You may be able to find some that have been scanned onto the internet. However, there are enough complexities I find it nice to have the factory fold-out electrical diagrams to trace things. Bentley did a nice job of subsetting the diagrams by major systems.

If you haven't seen it already, the 911SC FAQ on tech.rennlist.com may have some information of interest.

 

There is s thread on converting to manual heat on the Pelican BBS <a href="http://forums.pelicanparts.com/showthread.php?s=&threadid=32413" target="_blank">here.</a>

Have you had it apart? Is the little connecting rod missing, or just disconnected?

With the ignition on but engine off, if you turn the **** from off to 1, can you hear the servo working? You should also hear the blower motor in the engine compartment kick on.

There is a pretty comprehensive troubleshooting chart in the Bentley manual (which helped me get mine working). If you post exactly what it is doing, I will look up what the manual says.

Or, there is one listed in the Pelican 911 parts for sale board <a href="http://forums.pelicanparts.com/showthread.php?s=&threadid=71950" target="_blank">here.</a>

<a href="http://www.pelicanparts.com/911/911_Parts/911_electrical_diagrams.htm" target="_blank">Electrical diagrams here</a>, and also in <a href="http://www.amazon.com/exec/obidos/ASIN/0837602904/qid=1025319705/sr=1-2/ref=sr_1_2/002-9953461-8395207" target="_blank">The Bentley service manual</a>

Tom

 

Thanks for the leads. Am looking at diagrams now but havent reached home. Am now convinced will be going to manual-but as yet havent found out how to get the blower running. It runs well when 12v are present from an external source but I can't figure out what activates the blower from the cockpit. Two yellow wires lead back toward the engine compartment and I believe they have something to do with a relay. Still looking.

 

There is a switch in the manual heat levers.

There are a couple pictures <a href="http://www.pelicanparts.com/techarticles/911_extra_cooling/911_extra_cooling.htm" target="_blank">here.</a>

Tom

 

The Auto Climate is gone. Kept the shell and placed a manual switch for the blower in place of the former dial. Thanks to all. On to the next project.

 

Does anyone know where the wires (yellow) from the manual switch go? My switch works (opens/closes), and my fan blower works when power is applied, but does not work when the levers are lifted with the car running. Car is a 79SC. Thanks in advance

 

David
In my case[ 78SC ] the yellow wires headed toward the engine control the fan - try holding them together with ing on. I didn't have a switch under the Emergency lever so installed a simple on off between the yellow wires. It works. Good Luck Jack