I took my car into my dealership because the Check Engine light went on. It's a 2001 Acura Integra with about 45K in mileage give or take. The look at it an tell me that I need a Distributor Angle Sensor ($389.69) and a full tune up to the tune of a lean $870.00 parts and labor. The tune up would include (as written) Cap Rotor Wire Set Spark Plugs And of course, this does not include the $100.00 I just paid for the diagnostic. I might need to have that sensor replaced, but I am wondering how necessary the tune up is? I've heard that this is where they try to rope you in, by saying you need a full tune up. And I'm wondering if this is the case, especially when you hear lots of car commercials say "100,000 miles before first scheduled tune up" Oh and for the irony of it all, as I was driving home from the dealership, the check engine light shut off.