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Boost/Vac Gauge readings on a KB 9# kit

  • Thread starter Thread starter geoffsgt
  • Start date Start date Sep 3, 2007

geoffsgt

Member
Aug 7, 2005
176
1
16
Baton Rouge, LA
Sep 3, 2007
#1
  • Sep 3, 2007
  • #1
I had Cobalt gauges installed with my KB 2.1L 9psi kit, including a Boost/Vac gauge. Last night, under WOT, it read 15-20 psi of boost (2 runs... 1 @ 20psi, the other @ ~16psi). Anyone know why it would do this?

When I first got it, I think it read 9psi consistently (i don't stare at the gauge or anything, but when I did look it looked like 9). Though a few days ago I saw what looked more like 10 or 11 psi.

Also, what are normal readings for vacuum?

It's an Auto Meter gauge.
 
2

2002BLGT

Well-Known Member
Dec 18, 2003
2,945
4
59
Bedford VA
Sep 3, 2007
#2
  • Sep 3, 2007
  • #2
geoffsgt said:
I had Cobalt gauges installed with my KB 2.1L 9psi kit, including a Boost/Vac gauge. Last night, under WOT, it read 15-20 psi of boost (2 runs... 1 @ 20psi, the other @ ~16psi). Anyone know why it would do this?

When I first got it, I think it read 9psi consistently (i don't stare at the gauge or anything, but when I did look it looked like 9). Though a few days ago I saw what looked more like 10 or 11 psi.

Also, what are normal readings for vacuum?

It's an Auto Meter gauge.
Click to expand...

I have had 3 boost gauges from autometer now and they are cobalts as well , I think the gauges screw up over time , maybe overheating from the lights inside ? , I can exchange mine under warranty of course and it will fix it for a few months and then it starts acting stupid again ......dont know what the cause is .........
 

geoffsgt

Member
Aug 7, 2005
176
1
16
Baton Rouge, LA
Sep 3, 2007
#3
  • Sep 3, 2007
  • #3
But I've had it less than a month
 
2

2002BLGT

Well-Known Member
Dec 18, 2003
2,945
4
59
Bedford VA
Sep 3, 2007
#4
  • Sep 3, 2007
  • #4
geoffsgt said:
But I've had it less than a month
Click to expand...

well my car only gets driven about 2 days a week if that .........would not surprise me , get it swapped out under warranty and then cross your fingers , if it goes bad again I am going to swap to another kind of gauge , may stay with autometer but a different style .....
 
S

spederman

Member
Apr 13, 2005
732
0
16
Sep 3, 2007
#5
  • Sep 3, 2007
  • #5
I have the Autometer Phantom II boost gauge and it crapped out on me also. But mine wouldnt read anything at all and i only had it about 3 months. I replaced it with the same except a boost/vaccum type. Hopefully this one lasts a while, and i hope this isnt an indication of autometer quality.
 
S

showstopper2

Founding Member
Apr 16, 2001
425
0
0
New Bedford, Ma.
Sep 3, 2007
#6
  • Sep 3, 2007
  • #6
where is the vacuum line tapped?
 
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