Jump to content
SAU Community

Recommended Posts

so for a while, ive had this wierd grinding that has come on and off here with a strong humming. lately it has got worse and worse, so eventually i popped the boot and listened to it on idle and as i thought it was coming from the pick up where the fuel pump is.

now i had just recently replaced a f**ked stock one with a bosch 040, even had it installed by boostworx whos a very reputable shop in SA, so its left me puzzled as i have bever heard of one of these failing before. now ive gotta go have a look for the warranty papers :)

Link to comment
https://www.sau.com.au/forums/topic/167602-a-bosch-040-failure/
Share on other sites

Hey Stew,

Are you able to describe your setup? Is the 040 where the stocky was? Same pick up height?, sock filter?

Mate of mine had a few let go in his 180 recently. He had heaps of crap in his tank tho lol, might be worth a look.

I'm thinking of late, this is how many die, and how they are getting such a bad rap :D

no. there just shit. lol ive turned blu in the face telling people they just dont work.....

cold ok. hot gay.

Im not sure what hot gays have to do with it, but as long as industry continues to use em, so well I :D

Hey Stew,

Are you able to describe your setup? Is the 040 where the stocky was? Same pick up height?, sock filter?

to be honest i do not know as boostworx put it in. i can pull it out and have a look if need be. boostworx are a reputable workshop, and it seems to pick up as much as the stock one, if not a bit more.

Im not sure what hot gays have to do with it, but as long as industry continues to use em, so well I :D

lol.

yeah i replace them for the fun of it do i???? ever put a fuel pressure guage on one from cold to hot and see the pressure drop down to 10 pound when the fuel heats up? if not your driving a time bomb.

but its ok. you simply turn it off and re-start. and wait for it to start cavitating again.

it was kind of a piss take after how many people always reccomended them saying theyd never had one fail etc.

the pumps themselves dont fail. the way they are mounted is important. if they recieve any sort of air bubble then they cavitate and loose pressure. they still work but they dont operate in fuel over about 30degrees

besides they only put out 10% more than a gtr pump.

To start with, if you didn't have the tank removed and cleaned...and can show proof, then no warranty will be had. Also...who said the pump has failed. Just because it makes a bit of a noise. I have used a fair few of these before without failure on a single one. Doesn't mean it can't happen but it's highly unlikely. The noises can quite possibly be coming from the standard mounting frame which the pump will vibrate against if it has no padding between itself and the pump. Also if they are mounted too low they can vibrate against the bottom of the tank.

Noise doesn't mean stuffed.

yeah. like they dont fail there output just drops off as the fuel heats up. happent to me and 3 of our customers. they pumps them selve ae fine. they just went operating properly.

kinda hard to explain with out a 10 min long video showing exacly what gos on.

th o44 is a gem. no dramas regardless of mounting style

(lol @ spelling,dialing wand needed)

to be honest i do not know as boostworx put it in. i can pull it out and have a look if need be. boostworx are a reputable workshop, and it seems to pick up as much as the stock one, if not a bit more.

Shaun measures the length and sets them up correctly. So yes.. Exactly the same height as stock.

Bosch pumps do get groany when the fuel heats up. When mine wasn't receiving full volts it was so bad the floor pan would vibrate and could be heard/felt over the radio.

To start with, if you didn't have the tank removed and cleaned...and can show proof, then no warranty will be had. Also...who said the pump has failed. Just because it makes a bit of a noise. I have used a fair few of these before without failure on a single one. Doesn't mean it can't happen but it's highly unlikely. The noises can quite possibly be coming from the standard mounting frame which the pump will vibrate against if it has no padding between itself and the pump. Also if they are mounted too low they can vibrate against the bottom of the tank.

Noise doesn't mean stuffed.

yeh, i read the warranty, bit annoying.

i used a question mark in the title because i was asking a question, i wasnt stating it had failed. it still seems to be working, although i have noticed some stuttering, but in saying that i have fitted an RB25 turbo recently.

its been a deteriorating issue, it has been getting worse over time, now considering i have driven in 43' heat and not had this problem, but now driving in 20' heat and having it worse than ever doesnt seem to make sense. the noise happens here and there, not every time i drive it. happens when its cold (just reached or a bit below operating temp), hot, doesnt matter.

the humming is one thing, but the loud scraping noise is a bit of a worry.

ill take it to shaun and see what he thinks, if its just the noise, im not fussed, but when i hear something like that, i want to make sure im not going to have to be picking up pieces of my engine any time soon.

went to turn on my car today, turned the ignition on, but didnt hear any fuel pump buzz like usual. so went to crank it over, started terrible like usual, did it again and gave it a bit of throttle and it made it. turned it off, tried it again, no fuel pump buzz, cranked it over again, started just as bad again (which is unusual), kept repeating this and never heard the fuel pump buzz, not sure whats happening. the noise wasnt very prominant, but like i said, it happens here and there.

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


  • Similar Content

  • Latest Posts

    • For once a good news  It needed to be adjusted by that one nut and it is ok  At least something was easy But thank you very much for help. But a small issue is now(gearbox) that when the car is stationary you can hear "clinking" from gearbox so some of the bearing is 100% not that happy... It goes away once you push clutch so it is 100% gearbox. Just if you know...what that bearing could be? It sounding like "spun bearing" but it is louder.
    • Yeah, that's fine**. But the numbers you came up with are just wrong. Try it for yourself. Put in any voltage from the possible range and see what result you get. You get nonsense. ** When I say "fine", I mean, it's still shit. The very simple linear formula (slope & intercept) is shit for a sensor with a non-linear response. This is the curve, from your data above. Look at the CURVE! It's only really linear between about 30 and 90 °C. And if you used only that range to define a curve, it would be great. But you would go more and more wrong as you went to higher temps. And that is why the slope & intercept found when you use 50 and 150 as the end points is so bad halfway between those points. The real curve is a long way below the linear curve which just zips straight between the end points, like this one. You could probably use the same slope and a lower intercept, to move that straight line down, and spread the error out. But you would 5-10°C off in a lot of places. You'd need to say what temperature range you really wanted to be most right - say, 100 to 130, and plop the line closest to teh real curve in that region, which would make it quite wrong down at the lower temperatures. Let me just say that HPTuners are not being realistic in only allowing for a simple linear curve. 
    • I feel I should re-iterate. The above picture is the only option available in the software and the blurb from HP Tuners I quoted earlier is the only way to add data to it and that's the description they offer as to how to figure it out. The only fields available is the blank box after (Input/ ) and the box right before = Output. Those are the only numbers that can be entered.
    • No, your formula is arse backwards. Mine is totally different to yours, and is the one I said was bang on at 50 and 150. I'll put your data into Excel (actually it already is, chart it and fit a linear fit to it, aiming to make it evenly wrong across the whole span. But not now. Other things to do first.
    • God damnit. The only option I actually have in the software is the one that is screenshotted. I am glad that I at least got it right... for those two points. Would it actually change anything if I chose/used 80C and 120C as the two points instead? My brain wants to imagine the formula put into HPtuners would be the same equation, otherwise none of this makes sense to me, unless: 1) The formula you put into VCM Scanner/HPTuners is always linear 2) The two points/input pairs are only arbitrary to choose (as the documentation implies) IF the actual scaling of the sensor is linear. then 3) If the scaling is not linear, the two points you choose matter a great deal, because the formula will draw a line between those two points only.
×
×
  • Create New...