Porsche Repair: web, haynes techbook, coolant temp

Question
hi, first of all i like to thank you for your service.

plese recomend some useful websites for following question & more.  

1--i want to understand the basic auto electrical troubleshooting.

2--how to check auot sensors such as coolant temp, O2 & etc.

thank you!  

Answer
Hi Asif,

Unfortunately, there is no "one website" that covers everything, so your idea of looking for several is good.  I'll give you three to get you started.  And I think you'd be well served to actually buy a book.  I describe it below too.

These folks offer a couple lessons in the basics:
http://autorepair.about.com/cs/troubleshooting/a/bl300.htm

These folks are focused on car electronics (audio/stereo, etc), but there are a lot of ideas that can be applied to any installation...especially their discussions about relays:
http://www.the12volt.com/ohm/basics.asp

This site is obviously focused on Porsches, but again, many ideas are transferable to other situations:
http://www.clarks-garage.com/


Lastly, this book: "Haynes TECHBOOK, Automotive Electrical Manual"  is a softcover reference manual, like all the Haynes manuals, and it will really get you off to a great start.  Buy it used and it'll be very cheap.  Usually, the sellers of used books will describe their condition honestly...and if a guy is using the manual it'll be greasy and he'll keep it.   If he's not using the manual it'll be clean and he'll give it to someone to sell.  Here's a good place to start:
http://www.bookfinder4u.com/IsbnSearch.aspx?isbn=1850106541&mode=direct

Dave