Jump to content
SAU Community

Recommended Posts

heres the deal, when i got my car (180sx with rb20det) it read the boost pressure perfectly... as of yesterday it only reads vaccum, and the gauge stops when it hits 0... i have replaced all vaccum hoses, checked for leaks, installed another boost guage on a different line with same readings, my greddy profec b2 reads the same aswell...... im stumped as to what it could be...

any help would be greatly appreciated..

Link to comment
https://www.sau.com.au/forums/topic/95404-boost-gauge-will-only-read-vaccum/
Share on other sites

heres the deal, when i got my car (180sx with rb20det) it read the boost pressure perfectly... as of yesterday it only reads vaccum, and the gauge stops when it hits 0... i have replaced all vaccum hoses, checked for leaks, installed another boost guage on a different line with same readings, my greddy profec b2 reads the same aswell...... im stumped as to what it could be...

any help would be greatly appreciated..

is it still making boost, how does it feel to drive?

yep it boosts up fine, just took it out then... my profec b2 gave me a readin of 100 (which in psi mode means 10 i think..) seems strange now that it works again.....

one thing i noticed is the bov doesnt open as easy as it used to.... will hook up my normal boost gauge tomorrow and see what it reads....

dont bother with a stock gauge.

cant trust it  :D

sounds to me like its ok though now :D

Maybe you didnt mash your foot hard enough to the floor :P

hehe maybe i didnt.. :blink: ahwell its all looking good now *wipes forehead*.

will give another run tomorrow just to be sure. and ill have a mate with me so he can watch the gauge so i can watch the road ;)

reading 100? that sounds like 100mmgh which will be like 1psi.

are you sure its "boosting" ok ?

yeah it boosts up fine, like the day i got it.

in the profec b2 manual it says that in PSI mode 10psi will display as 100. (i have already set it to PSI mode)

Edited by marduke
  • 6 years later...

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

    • I'm normally copping my own abuse from neglecting my daily drivers. "Those suspension bushes will last a bit more", "Don't worry about the oil leak, just keep topping it up". The project cars I'm always doing things slowly on them as I'm wanting them to be done better, and neater, and nicer. Luckily I don't have to deal with 18 year old Matt's "Learning to wire" stuff in the project cars. And there's only one piece of wiring I'm displeased about in the Landcruiser, and it's about to be cut out... However, the box loads of parts that have been going through this place lately for the Landcruiser... Brake pads Brake Rotors Full handbrake overhaul Wheel Bearings Seals Swivel hubs Steering Boxes Half the suspension joints Shocks Air bags (Ones to go in the rear springs for towing) Water pump Timing kit Lower timing case Harmonic Balancer Radiator Lots of other little seals and shits Gas struts for the bonnet New power window switches And god knows what else I've forgotten... Ha ha ha I have my fingers crossed the pinion seals don't start leaking on the diffs, that the transfer case doesn't leak, and the gearbox input shaft doesn't leak, nor the rear main seal. As they're about the only seals I haven't replaced in the driveline! I'm seriously eyeing off buying new caliper rebuild kits front and rear brake calipers... I'll probably recheck all the valve clearances soon too, and hopefully, it should be all good and sweet to haul some long distance trips again!
    • Every time I pull my 3x gauges out of the console and see the crack-addict way that I did the wiring, and I just can't bring myself to tear it all apart and "make it nice", because it is currently working. In fact, the last time I was in there I probably made it worse.
    • The best part is when you own the car long enough that you look back and find your OWN ham fisted amateur shit!
    • The annoying part about neglect, is when you start to replace one thing, and find ten more broken things. Ham fisted monkey repairs you normally only find out about when trying to do something unrelated! Ha ha   Neglect you can kind of anticipate the huge costs to fix it all. Ham fistedness is normally a shock the first time your work on a new old car, as everything "looked" good before.
    • For DBA, check out their guide table here. https://dba.com.au/wp-content/uploads/2023/01/Direct_Replacement-Guide-2021.2.pdf   Additionally they have some other guides and info on how to make sure you choose the right pad.
×
×
  • Create New...