Originally Posted by tz2772
town mileage 14, best ever highway mileage on long trips to florida was 23-24. :(
this is with no WOT, rapid acceleration for me in this car is hitting 3000 rpm! haha
so I have replaced the o2 sensor, on to plugs and wires, I have pulled off the first boot, and I see BOSCH on the old plugs, jeezzz.
looking for improvements in mpg
replacing with ac delco standard plugs and blue napa wires.
The sensor may have been getting a bit lazy... And Bosh plugs and 3800 aren't friends...LOL I get the feeling you have already read about that..
Yes some Good AC Delco Plugs, and wires will help... In the future when you have the time and money I do reccomend a swap to the Delco II ICM and Coils, and then a set of NGK TR55 Plugs... I have done as good as 31 on my 91, and that was with me going over the posted limit on the interstate...
Worst I did was 13mpg in town and 22 on the road with a Bosch O2 sensor... Now the norm is 19-21 in town with the AC On... lol
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