Anna, You came to Vulc-Tech on 7-11-13 with an idle issue we recommended a tune up to start because your vehicle was close to 100k miles and 9 years old we had to start with that. You came back on 7-15-13 to have the tune up done and while doing the tune up we found 2 of the 6 ignition coils on your vehicle cracked and burned, we advised on replacing these and you agreed. After the tune up and coils were done we still had an idle issue so we cleaned the throttle body and reset the idle strategy. We continued to have an idle issue and after looking at this problem for an additional 3 hours which we did not charge you for we concluded that the ECM (Vehicle computer) may have a bad driver so we had an outside tech come in with a special computer that logs into the vehicles computer, he confirmed what we suspected. We had giving you a vehicle to use at no cost so we had the additional time to diagnose and we did not charge anything over the estimate. You said the other garage cleaned the throttle plates and reset the idle strategy which is what we did that is why I reimbursed you for that. I believe the other garage may have moved the throttle plates which will make the idle better but is not the proper fix and the issue will eventually reoccur.