I know most of the stuff this guy explains, but I forget sometimes-I'm getting old, and I figured I'd pass it along.
http://troubleshootmyvehicle.com Most of the tests can be done with tools found in most home garages.
If this helps one person, my GDFTD is done.....

Disclaimer: I have no relationship of any sort to this website, it's just a great reference.

 

Thank you, it's always nice to have another source to check. Especially when you're needing the vehicle and no one happens to be online to help.

 

Bookmarked! Thanks, Sir.

 

Interesting! Thanks for sharing.

 

Appreciate you sharing this - thanks!