Boost Gauge Will Only Read Vaccum

[marduke]

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..

[grim32]

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..

<{POST_SNAPBACK}>

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

[R31Nismoid]

was gonna say that same thing

[marduke]

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....

[R31Nismoid]

dont bother with a stock gauge.

cant trust it

sounds to me like its ok though now

Maybe you didnt mash your foot hard enough to the floor

[marduke]

dont bother with a stock gauge.

cant trust it 

sounds to me like its ok though now

Maybe you didnt mash your foot hard enough to the floor

<{POST_SNAPBACK}>

hehe maybe i didnt.. 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

[grim32]

Maybe you didnt mash your foot hard enough to the floor

<{POST_SNAPBACK}>

ha ha ha ha ha ha ha ha ha ha

[paulr33]

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

are you sure its "boosting" ok ?

[Dose Pipe Sutututu]

make life simplier, you can set your Profec to show in PSI...

as paulr33 says, sounds like your running 1PSI

[marduke]

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

are you sure its "boosting" ok ?

<{POST_SNAPBACK}>

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 November 18, 2005 by marduke

[silviline]

has been fixed guys turns out it was a split in one of his lines thanks for the help

[Gibbon138]

MMMMM, sounds like i have a similar issue though with the stock boost guage on the Nismo cluster, I'll go over the lines and let you know.

Cheers

[Mitcho_7]

This is a 7 year old thread, might be worthing checking the date on the last post.

Edited April 17, 2012 by Mitcho_7

[Birds]

I remember this thread. I also remember the Black Eyed Peas being cool.

[joeyjoejoejuniorshabadoo]

I remember this thread. I also remember the Black Eyed Peas being cool.

black eyed peas were NEVER cool

(i can prove this with science)

[zebra]

I will back that science up with even more science