hey, i know this thread is kindof dead..but i used this to help figure out what was wrong with my toyota. and well it wasn't a computer ground..but CLOSE..i was going frickin nuts! but it ended up being the plug to the fuel injectors, one of the plugin slots on the plug wasn't working..so i took a wire..spliced it together and just pluged in on the one side..and voila..it worked! but i just wanted to say thanks to this thread..it was a great deal of help and helped me solve some problems that also needed to be adressed!