I've had a slight problem with my opel astra 1998 model which was diagnosed to be a faulty MAP sensor. I went and bought another MAP sensor with the same serial number. But when I bought it, I found out that it has 2 numbers: one 8 digit number and another 4 digits number. Do both have to match or is just the 8 digits number enough?
The numbers are: 90225716
Each number is written on a different corner at the bottom of the MAP sensor. If I tried the wrong sensor, what could go wrong? How should I change it? e.g. disconnect battery....etc
Any suggestions would be very much appreciated.