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Bosch 040 Just Got More Noisy!?!

Yeedogga

By Yeedogga,
in Engines & Forced Induction

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Yeedogga Experienced

Yeedogga

Posted
Posted (edited)

Hi guys,

I put an 040 in the car a few months ago. Ran fresh wiring, new relay etc etc

Up until today, you could just hear it humming/sucking away. From inside the car you could just hear over the exhaust & from the outside you could barely hear the pump at all.

Today it has started whining/buzzing and it is significantly louder than normal. Should I be worried?

Edited by Yeedogga
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https://www.sau.com.au/forums/topic/289920-bosch-040-just-got-more-noisy/
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turael Enthusiast

turael

Posted
Posted

if it makes you feel better, my 040 makes a hell of a lot of noise, all the time. gurgles, buzzes, whining...

very noisy pump. car has always been fine though, been running it for a year or two now.

Parag0n Mentor

Parag0n

Posted
Posted
I don't have a gauge so I haven't been able to tell. Car seems to be running fine though.

Mate go get an autometer gauge that you can put in your engine bay they're like $20 and hook it up to your regulator, its such a cheap mod for important information if you're running more than base fuel pressure.

femno Grand Master

femno

Posted
Posted

Check your tank for shit!

Pull the pump out and inspect it for black dusty crap on the bottom. If that or anything else is on the strainer of the pump you need to remove the tank and have it cleaned.

James_03 Mentor

James_03

Posted
Posted

My 044 went this way too, exact same symtoms. Started also getting fluctuating pressure.

Ripped it out and went a 023, still never figured out why it died. Was a genuine 044 too, strainer was clean, good wiring etc.

There just getting so hit/miss now it's not funny.

bubba Grand Master

bubba

Posted
Posted (edited)

I really don't think it's anything to worry about, my 044 has been like this for a couple of years now with no issues what-so-ever.

My guess as to WHY is that it's probably working harder to pump the thinner hotter fuel around. It's basically because there is excess fuel travelling to a hot engine bay and back. Standard, our cars run a control module that drops voltage to the fuel pump at idle, these tend to get removed when aftermarket fuel pumps go in.

Edited by bubba
Mayuri Krab Grand Master

Mayuri Krab

Posted
Posted
if it makes you feel better, my 040 makes a hell of a lot of noise, all the time. gurgles, buzzes, whining...

very noisy pump. car has always been fine though, been running it for a year or two now.

Same with mine. Mine has a very loud buzz & grgule sound since day 1 of getting it installed when my stock one died. The exhaust noise covers the pump noise up inside the car, however outside its very noticeable when you are near the rear of the car.

Being fine for about close to a year now.

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