UPDATE3: fuel starvation/loud pump on 83 urq

[mike]

fuel filter?

mike

 --- Brady Moffatt <bradym at sympatico.ca> wrote: > Hi
All,
>
> I changed the fuel pump today. Brand spanking new
> Bosch (no Pierberg around
> in stock anywhere). Wow, it's nice working on
> non-winter-driven cars. No
> broken bolts, no rust eye baths, much less swearing.
> Well, at least until I
> went for a test drive.
>
> The really loud old pump that crackled and changed
> pitch has been replaced
> by a new one that does exactly the same thing. That
> means no power and
> stumbling like before.
>
> I'm still pretty sure it's a fuel problem since the
> O2 voltage drops to 0
> when the car stumbles. My worries about the hot coil
> were unfounded. The
> strut bar right next to it is just as hot.
>
> What next? I have a plunger kit on order from the
> dealer. If it was
> sticking, could it reduce pressure enough to close
> the injectors?
>
> Is there anything else?
>
> Help!
>
> Cheers,
> Brady Moffatt
> Montreal, Quebec, Canada
> 83 UrQuattro with 54,000 miles
> 86 4ksq with 310,000km
> 86 4ksq parts car
> 72 Datsun 240Z with 180,000 miles
> 92 VW Golf with 200,000km FOR SALE
> in middle stages of quattrosis accumulatus
>
>
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