Check your AFM with a voltmeter.  Another possibilty
could be the ground from the ECU to the engine.  I had
a bad ground and was getting about 5 MPG, billowing
black smoke, bucking, hesitating, etc.

Good luck,

jeff
--- Chad G <groch@WORLDCHAT.COM> wrote:
> Hi,
> My fuel mileage is down and I've replaced MANY
> things in an attempt to sort
> out why my 85GL is running rich and eating gas.
> Here is a list of stuff
> that has been done as an attempt to
> fix........replaced O2 sensor, both temp
> sensors, new thermostat, new water pump, fuel
> filter, injector wiring, air
> filter, plugs, wires, distributor, rotor...........
>
> could there be a problem with the ECU, leaking
> injectores, bad fuel
> pump??????????
>
> HELP
>
>
> Chad 85GL

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