Originally posted by MarkO: Originally posted by rozwell911: Could be a precat, a bad o2 sensor messing with your air fuel ratio....then again youd be pulling a CEL . And there was no word of a CEL in your post...make sure yous spark pulg wires are good...could also be some folwed spark pulgs....start with the simp things, like what you changed...then go from there.
Roz
Aren't there codes that get stored on occasion that do not throw a CEL ??
Yes...but there very unlikly, but it is possible. The only one I know of is if your fuel level sensor is bad. See the way I undersatnd is that all the codes that pose a problem with the driveability of the car will throw CEl's, including some transmission problems.
But when it comes to air/fuel and gas mileage, it may not throw a CEl, like with fowled spark plugs, but i believe bad wires might throw a CEL.
BUt if it's a precat it would mostlikly throw a CEL.
Roz
3.0 SVT hybrid...all the fixens...Track/Race ready very soon!!!!!! 20,000 + miles
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