npr brake booster fix

npr, brake booster, isuzu, mobile car doctor, Ben Sanson

[@TotalJunkTexas]

Does the inside electric pump make the buzzing sound, because the Vacuum pump on the engine is ripped inside? Mine makes that same noise, now the truck wont start.

[@hosuk211]

Did it fix the problem? My nrp truck has same light on with the noise and it goes away after 10 seconds or so and when i pump the brake 5-6times the light and noise comes back on.

[@bensanson5992]

Yes it did

[@BHHardfindUOOH]

Hey man what was the issue

[@elijahz1]

Did you ever fix your problem? I’m experiencing the same exact thing

[@TheBracket1]

How much vaccume psi does it pull when working correctly

[@ronaldoquintos1675]

The one I’m working on the noise shut off when accelerating but returns when brakes are applied and pretty much stays on after brake is applied most of the time.

[@bensanson5992]

Sounds like under a load the pump is building vacuum but the system is leaking it off

[@ronaldoquintos1675]

@@bensanson5992 you are exactly right buddy

[@bensanson5992]

Glad I could help

[@ronaldoquintos1675]

@@bensanson5992 I actually was thinking the vacuum pump was worn out and weak, it made loud slapping noise when revving up engine don’t know what that meant but it’s sounded like it was bad, changed with new one and solved the problem. Had to get another pulley though because the puller warped the original pulley while I was pullling it off the spindle. It was really tight on there with a some rust. I sure appreciate your video as technician I did not even know where to begin, then I saw your video and everything made sense. It needed an actually vacuum pump since it’s a heavy vehicle designed to carry heavy load, manual braking is not gonna stop that thing if something goes wrong. Then just in case engjne stall the electric booster will provide braking assist which turns on when mechanical pump is not working

[@whoshotya30]

I have a 2019 chevy 4500 and have the same issue. Chevy is backorder until who knows when. Any other part that will fit. Gas engine

[@bensanson5992]

Check for an electronic vacuum pump. I changed it out on another truck andits working

[@rigobertosaravia3440]

What the tool used to removed de wheel for parts

[@fatbastardwithabeard]

Did you say the lovely sound is the vacuum pump down here by the booster? Is there really a vacuum pump there or is the vacuum all produced by the belt driven pump?

[@ronaldoquintos1675]

The electric pump is back up just in case the mechanical vacuum pump wears out

[@fernandosandoval9427]

My break pedal goes all the way down and i also get the break booster light and sound could it also be the same problem

[@reytech1786]

All the way down? Check air in the lines or a bad master cylinder,

[@slabdaddyoutdoorstvchannel2435]

I have a 2005 gmc w3500 same issue light and loud sound I’ve changed front/back breaks replaced lines and changed master cylinder and break booster today same noise🤦🏽‍♂️🤷🏾‍♂️

[@rigobertosaravia3440]

Do you change

[@bernie421]

My light and buzzer came on. After watching this video i tapped on the pump with a wrench and it stopped.