[V8] poor gas mileage

[Tony and Lillie]

Subject: [V8] poor gas mileage


> Hello folks. This past week I noticed my gas mileage drop off a bit (8mpg 
> city) the fpr and o2 sensor cant be more than a year old. I tried 
> diconnecting the o2 sensor already(There was no differance in gas mileage) 
> Here are the codes i pulled :
>
> 2342 (o2 sensor)
> 2341 (o2 sensor)
> 2322 air temp sensor
> 4431 idle stab valve
>
> I suspect fault wireing somewhere.  any help where to start would be a 
> great help. Thanks. Allan
>
>
Alan,
Sounds like som fun :(
1. does the car run any different?
2. does it smoke at all?
3. Is there any chance a mouse or something got under the air cleaner assy?

Mine ran crappy for quite a while (Bad ECU) and even then it got 15MPG 
around town. It did smoke black when floored, though.

The only sensor I can think of doing this is the MAF. The air temp sensor 
can make it go full rich, and back the timing off, but I can't imagine is 
killing the gas milage that much. Same with the O2. Like you said, though 
maybe bad wiring. First thing I'd check is the O2 wiring where it goes past 
the exhaust.

Tony Hoffman