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Boost Gauge

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rare1

15+ Year Contributor
125
1
Mar 12, 2007
Hamersville, Ohio
I have my boost gauge hooked up to the p port of my throttle body and all of the sudden it won't give me a reading unless I have the gas pedal pressed a little bit.I took off the throttle body to clean the port out but its not clogged.Any suggestions?
 
I have my boost gauge hooked up to the p port of my throttle body and all of the sudden it won't give me a reading unless I have the gas pedal pressed a little bit.I took off the throttle body to clean the port out but its not clogged.Any suggestions?

put a T in on the vacuum line going to the FPR and run your boost gauge off that.
 
LOL I went to install my boost gauge on my P line only to find out that my '98 doesn't have one it was just not there LOLthere wasb't any sort of connection to conect it too LOL so yeah I put mine in the FPR
 
It's a autometer boost,vacuum gauge.I guess I'll just have to run it with the fpr vacuum line.Thanks!
 
The "p" stands for port iirc meaning its a ported vac fitting. Only opening as you discovered at partial throttle openings.

They use this as a way to control emissions devices etc. Not my area for sure!

Like everyone else said, T into the FPR line. its a good spot.
 
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