1126-1128 codes on a 97 Tip. Lots of places for vac leaks. Lots of hard to inspect plastic tubes that have been heat cycled for 17 years. I finally took mine to an indy and they used a smoke generator and found it. They charged me an hour +/-$125 and problem solved. I forget where the leak was.
I suggest you get some diagnostic help before you X/O 4 O2 sensors on a guess. O2 sensors aren't cheap. Let us know how you make out.
|