OBD II stands for OnBoard Diagnostics v II.0. When my code reader gives me a code, I translate it
here. Then I know what the problem supposedly is. Sometimes it doesn't tell me squat.
Like now for instance. My Check Engine light tells me that the System Mixture is Too Lean. Say what? Does that mean too much air or not enough fuel? Since I see no sign of excessive exhaust temperatures, hear no detonation and haven't noticed any significant change in mileage, I'm betting this means I have a bad sensor somewhere...possibly the MAP sensor. I ignore this trouble code mostly. Other times it told me my O2 sensor was bad and it WAS!
My car is going to have to go in for major work soon anyhow so I plan on just having a new engine put in to compliment the new transmission and new suspension. I will put in new brakes as well. My new engine will be massaged some to give me more horsepower and the transmission (God willing) will be a manual for better control and reliability. If I go to the trouble to get more power and install a transmission that can handle it so as to handle the mountains here, I might as well get more WHOA power to stop me again.
The Cat won't be a "hot rod" or really even a "sleeper" but it will have about 30% more power and torque and since I pull a trailer now and then, I want more braking power as well. The factory Cougar leaves a lot of room for improvement. That's really the only reason I'm keeping it at all. That and I *like* it.
Brian
PS Oh yeah, a code reader will run about $100 for a basic one to $250 for a really good one. Check your local auto parts store.