Transmission/engine Tests?

[annieann]

hi,

my sister's car appears to be 'dragging' recently. my friend's brother/mechanic says there is something wrong with the transmission or parts of the engine. he says there's a test that can be done to figure out what's wrong with the car. unfortunately, he doesn't have the equipment on site. he referred her to another place but they have no idea what she's talking about. anyone have clue as to what this 'test' is called?

[annieann]

never mind. found out it's called the engine diagnostic test. thanx anyway.