intermittent instrument cluster

My 1994 SSEi guages are acting up. Sometimes they work and sometimes they don't, very annoying. I understand this is a common problem and if anyone knows how to fix this I would appreciate their assistance.

First check resistance between the engine block and the frame. If the engine ground strap is bad, it will cause all the guages to act up.

:smokin: mine is the same. went to wrecking yard.i had volts. the other had boost. but they work the same. work great.easy to change.