boost guage problems
#1
well the autometer guages have been siting in the back of the truck for a month now ..finally got the time to get them put in. the problem is where do i tap in the plastic line into the intake manifold ?
we tried the passenger side one that goes to the blow off for the charger put a T in it and were only seeing vacum only ? does the vehicle have to be moving to see the booost if any when i get into it ? i have three mechanic baffled at the guage showing no boost. The needle on the guage moves it starts at 30 vacum and climbs close to zero but no boost ??
there seems to be a lot of points in the manifold where it looks like you can unscrew a cap can you unscrew them ??
2002 gmc sierra ATI Procharger 8-9 PSI ??
thanks
Jim
we tried the passenger side one that goes to the blow off for the charger put a T in it and were only seeing vacum only ? does the vehicle have to be moving to see the booost if any when i get into it ? i have three mechanic baffled at the guage showing no boost. The needle on the guage moves it starts at 30 vacum and climbs close to zero but no boost ??
there seems to be a lot of points in the manifold where it looks like you can unscrew a cap can you unscrew them ??
2002 gmc sierra ATI Procharger 8-9 PSI ??
thanks
Jim
#2
Adkoonerstrator
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From: Deep in the seedy underworld of Koonerville
What your saying sounds awfully familiar. <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" />
Are you just revving the engine while sitting there in park?
If so there is no load on the motor so the blow off valve will not close. Thats why your not seeing any boost.
Don't ask me why I know this. <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" /> <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />
Take the truck out for a spin and see how much boost ya got. <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />
If you still don't see any boost try hooking the line up into the brake booster hose.
Good luck
John
<small>[ June 28, 2002, 04:38 PM: Message edited by: XLR8NSS ]</small>
Are you just revving the engine while sitting there in park?
If so there is no load on the motor so the blow off valve will not close. Thats why your not seeing any boost.
Don't ask me why I know this. <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" /> <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />
Take the truck out for a spin and see how much boost ya got. <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />
If you still don't see any boost try hooking the line up into the brake booster hose.
Good luck
John
<small>[ June 28, 2002, 04:38 PM: Message edited by: XLR8NSS ]</small>
#3
damn ....the truck was in park that makes a lot of sense ..you think mechanics with i'm sure over 10 years of exp. would know this..
well off to the crappy tire to buy a tee. screw them i'm gonna get this thing working myself .. <img border="0" alt="[Fluffy]" title="" src="graemlins/fluffy.gif" />
well off to the crappy tire to buy a tee. screw them i'm gonna get this thing working myself .. <img border="0" alt="[Fluffy]" title="" src="graemlins/fluffy.gif" />
#4
<img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" /> <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" /> if that were a whipple you would be seeing some boost, i can get at least 3psi in park with just a quick bump of the throttle? <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />
#6
</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by XLR8NSS:
<strong>What your saying sounds awfully familiar. <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" />
Are you just revving the engine while sitting there in park?
If so there is no load on the motor so the blow off valve will not close. Thats why your not seeing any boost.
Don't ask me why I know this. <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" /> <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />
Take the truck out for a spin and see how much boost ya got. <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />
If you still don't see any boost try hooking the line up into the brake booster hose.
Good luck
John</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">That sounds right to me. When in park, I have around 21 vacum and you really can't show any boost while revving it. I thought the same thing when I first got mine installed, but once I got it on the highway and let her rip, it stayed glued at 6 psi. Kent.
<strong>What your saying sounds awfully familiar. <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" />
Are you just revving the engine while sitting there in park?
If so there is no load on the motor so the blow off valve will not close. Thats why your not seeing any boost.
Don't ask me why I know this. <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" /> <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />
Take the truck out for a spin and see how much boost ya got. <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />
If you still don't see any boost try hooking the line up into the brake booster hose.
Good luck
John</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">That sounds right to me. When in park, I have around 21 vacum and you really can't show any boost while revving it. I thought the same thing when I first got mine installed, but once I got it on the highway and let her rip, it stayed glued at 6 psi. Kent.
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