Hi all,

I’m looking at swapping my Bosch 044 for a Walbro GSS342.

The Bosch 044 is supported by an external relay which provides a constant 12V, as opposed to the stock fuel pump controller which modulates voltage.

My question is, once I drop the Walbro GSS342 in, does anyone know if the constant 12V will harm the pump?

If so, I suppose I’ll have to de-wire the external relay, but I’d like to get away with it if I can.

Cheers!

Anyone?

the words fuel and voltage scare me off

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Walbro (actually all) pumps are rated for 12-18 volts constantly...... It's just that some manufacturers back the current off to keep the pump hushed at idle.

Alternator voltage is 14-14.5 volts anyway.

GC's run a constant 12v nominal to their pumps, plenty running around on Walbro's.

Why are you going back to a Walbro?....They aren't much quieter...

You can insulate the 044 with rubber to quieten it down if the noise is too much (I can't hear mine inside the car.

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I've done that and its just farkin loud. I had a Bosch 910 that was loud and a Bosch 984 that was really quiet. Some are, some aren't.

I've had a Walbro previously and it was silent (in comparison to the Bosch pumps anyway!).

As above, they reduce the voltage to quiten the pump at idle/low revs.

try insulating the vibrations better on the bosch.

maybe mount the pump to a square piece of aluminium, and then use thick double sided tape to attach the aluminium to the body of the car. could be a tempoary solution to try?

Steve

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