Bad Boost gauge

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green95ss

Poor car collector
Joined
May 12, 2003
Messages
97
Hi all,

After extensive searching, I have had a hard time finding an answer to this.

My 86 GN VDO boost gauge does not seem to go over 10lbs of boost anymore. This started happening a few days ago--nothing has been changed on the motor, only the tranny has been R&R'ed to fix a problem.

Oddly enough, my factory boost gauge in the dash has always been pretty close to accurate (as opposed to my tach). The dash boost gauge measures a little over 15 psi at WOT, while the VDO only measures 10 psi. I just bought a Scanmaster2.1, is there any way I can see what happened using this tool?

Any other suggestions? Vaccuum leaks? Exhaustleaks? Does the factory boost gauge get its reading from somewhere else?

Thanks,

Guhan
 
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