Autometer boost gauge reading wrong?

Reply Subscribe

Thread Tools

Search this Thread

Sep 21, 2009 | 11:56 AM

#11

Vapour Trails

3rd Gear Member

Joined: Jan 2008

Posts: 530

From:

20 boost or vacuum?

Sep 21, 2009 | 12:34 PM

#12

shanec

4th Gear Member

Joined: Aug 2008

Posts: 1,679

From: Mississippi

20 vacuum. Actually, its -20mmHg. Boost is in positive numbers and in psi.

Sep 22, 2009 | 12:31 PM

#13

Vapour Trails

3rd Gear Member

Joined: Jan 2008

Posts: 530

From:

Quote:

Originally Posted by shanec

20 vacuum. Actually, its -20mmHg. Boost is in positive numbers and in psi.

Really? You don't say.

I was trying to ask the OP what his guage was reading, because he never specified.

But I think we figured out that this guy is just seriously lost and doesn't know boost from vacuum.

Sep 23, 2009 | 02:31 AM

#14

Jersey Stang

2nd Gear Member

Joined: Jan 2008

Posts: 401

From: NJ

Quote:

Originally Posted by pbguy_1

It zeros corectly with just the ignition in but as soon as I crank it, it reads 20 or so. When I get on it, it reads the right lbs of boost but as soon as I let it idle it reads at that 20. never 0.

its operating properly. engines work off a vacuum unless air is being forced into the engine (boost).
On a NA engine, WOT will read 0.

Oct 4, 2009 | 12:31 AM

#15

10GTSTANG

3rd Gear Member

Joined: Jul 2009

Posts: 566

From: South Florida

Quote:

Originally Posted by shanec

This spot provides 12V at key-on-engine-off and it stays at 12V during cranking. Some other places on the car with 12V turn off during cranking and then back on after the engine is running.

Also, before starting the car pause a few seconds at key-on-engine-off until the gauge zero's itself.

Is that some kind of adapter plugged into that fuse location with the fuse plugged in sideways? I can't really tell from the pic how it's connected.

Oct 4, 2009 | 12:15 PM

#16

hammeron

6th Gear Member

Joined: May 2006

Posts: 11,883

From: Nicely done

it's a mini add a circuit, like this one.

http://www.amazon.com/Wirthco-30103-...868488-9009704

they are very handy to use when needing power
from the kickpanel fuse box.