04-22-2003, 09:26 AM
| #1 (permalink) |
| Gimme a Drink!  Join Date: Dec 2002 Location: NYC
Posts: 693
|  bad gas milage i usually make around 13 mpg in my stock 90 GT w/ 114k in NYC. I now make only about 11. The car has fairly new plugs, wires, cap, rotor, fuel filter, air filter. Timing should be good. I was making good mpg after all these items were replaced but recently my mpg has gone done. Any ideas? I was thinking maybe O2 sensor? |
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04-22-2003, 08:09 PM
| #2 (permalink) |
| Registered Member Join Date: Mar 2003 Location: NC
Posts: 64
| Check for codes. Some say replace the o2s every 60K or so but I've had 3 5.0s with well over that many miles on their o2s and they get good mileage (could be better w/ new o2s I'm sure). They do become less sensitive over time. |
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