Afraid I'm going to be asking a lot of questions. Just bought 1994 S500 about 3 weeks ago and have put 5,000 miles on it already. All the little(hopefully) small things are cropping up. Right now I have two problems that are in need of aid. Engine light on. I paid to have the codes read out and was told that the upshift delay value was none functional. I'm checking for vacuum leaks now before I pay to have it replaced. Other thing is that when I turned the car on this afternoon, the A/C blower did not start. Can someone tell me where the regulator is located in this car so I can check it/replace? Also, how do I turn off the codes to see if I will get the upshift error again?

Thanks