I have a 2002 saab 935se, and since ive had it i havent had air conditioning, hell i dont even know how youd turn it on..my girlfriend is convinced its too old to have air conditioning..please help??

No. The engine temp sensor affects engine idle speed, and timing. There is an in car temp sensor that controls the position of the blend door and the fan speed if the system has automatic temperature control.It also cycles the AC compressor clutch and the radiator cooling fans.

sounds like the fob quit working.....need a new fob.Some ace hardware stores can make a new saab fob key cheaper then the dealer though,call the dealer first to get a price and their feedback if it is a keyfob issue

Hello Robert,
There are a variety of issues that could be causing this such as condition of charging system, condition of battery, cables and starter and even the anti-theft system.

I would recommend contacting a local authorized mechanic who works on Saabs or at least foreign automobiles.

Best regards,

the cooling fan relay modules go bad

Visit the on-line store, known as reliable-store, they have the repair manuals. I'm sure you will get the solution of your problem.
Best Manuals

Hi Ross, I put up a couple diagrams that will probably help you. If you need more info to understand these pics, let me know and I'll try and help.

Dave

http://min.us/mZIJkUBbHcTyX#2

OK, most cars have heater cores that get hot but the blender door directs air away from this core in the a/c mode when you want cool air from the evaporator.

I'm not sure if there is a control valve which stops the water from going through the heater valve.

I think the part is called a 'heater blend door actuator' that you are after.
http://www.autoanything.com/air-conditioning-65-861/201A1060.aspx?kc=AFFCJ&mr:referralID=c9ca506d-9f22-11df-bf8d-0026b95a1738

normally a whistle indicates an air leak,poss in the hose from the manifold to the collector,but air leaks are just one of many poss problems(ive even heard brake pads whistling,dont figure....)

it is normal the computer adjusts the engine rpm in economy mode to save gas out of economy mode everything runs a little more because the computer is'nt holding them back