Go buy a tool that not only scans for codes but shows live data. You have a '96, so almost any code reader will work. But for the price, and if you have smartphone,
- BAFX is $22 from Amazon and will read engine codes and show live data.
- BlueDriver is $99 from Amazon, will read all computers and will datalog. (it does go on sale on Black Friday for $69 every year)