Boost gauge reading vacuum but not boost
01-19-2018, 05:55 PM
#1
Boost gauge reading vacuum but not boost
I have a c5 z06 corvette with a A&A super charger kit, I installed a tee in the brake booster line that feeds into a vacuum block & hooked up my blow off valve, boost gauge, & BAP to it,
For some reason my gauge shows vacuum @ about 25hg but when i drive the car the boost needle does not pass 0 psi. Any ideas why?
Thanks!
Thanks!
Last edited by Uassaide; 01-19-2018 at 06:43 PM. Reason: Typo
01-20-2018, 12:40 PM
#2
Burning Brakes
What type of gauge are you running? Electrical sending units can be problematic, wspecially with cheaper units.
Start by cleaning the contactss and connections. You can also use a T fitting with a known value gauge pref mechanical to verify it.
Start by cleaning the contactss and connections. You can also use a T fitting with a known value gauge pref mechanical to verify it.
01-20-2018, 06:02 PM
#3
Melting Slicks
I have a c5 z06 corvette with a A&A super charger kit, I installed a tee in the brake booster line that feeds into a vacuum block & hooked up my blow off valve, boost gauge, & BAP to it,
For some reason my gauge shows vacuum @ about 25hg but when i drive the car the boost needle does not pass 0 psi. Any ideas why?
Thanks!
Thanks!
if you've all those things hooked up to a line to the brake booster....which may have a check valve in it, potentially none of those things will be seeing positive pressure and none working correctly.
01-20-2018, 06:57 PM
#4
Im using a glow shift mechanical gauge.
01-20-2018, 07:15 PM
#5
Jeez thats so weird, i think this is a check valve directly going into the brakebooster itself, i dont understand why The A&A instruction manual would tell people to hook it up there
01-20-2018, 09:03 PM
#7
