Serial # 19781010 wrote:
> 1985 Fiero GT 2.8L
>
> First noticed problem/change: I have to crank the engine 3 times
> before it will start. It was starting on the first cranking of the
> engine.
>
> Second problem/change: I locally drive to somewhere, park and turn
> off the car, short time afterwards, engine still hot, I try to start
> and it acts gas starved, putt-putt-putt, give more gas,
> putt-putt-putt, sometimes would fire up and run, sometimes not.
>
> I can start and run the car short distance and not notice any problem
> other than the starting on 3rd time cranking the engine.
>
> ECM Error Codes: 13 oxygen sensor and 44 lean mix.
>
> I am going to replace the oxygen sensor with a new one tonight.
>
> I hear the fuel pump come on for 2 secs after ign key turned to on.
>
>
> What else could be causing the lean mix condition?
You might want to check fuel pressure, fuel pumps don't last forever.
The V6 fuel pressure is referenced to the manifold absolute pressure. At
idle you would expect around 30psi, quick opening of the throttle should
cause it to jump to close to 40psi. Just turning on the key without
cranking should give 39-40psi and this should not bleed off rapidly.
--
Robert W. Hughes (Bob)
BackYard Engineering
29:40.237N, 95:28.726W or perhaps 30:55.265N, 95:20.590W
Houston, Texas "The city with too much Oxygen"
rwhughe@[EMAIL PROTECTED]
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