90 talon cluster problem

[Wanagofast]

I'm looking at a awd 90 talon and I was test driving it and the tachometer worked while driving under slow acceleration and worked normal. But as soon as I give it throttle and boost kicks in the tach. Drops to zero until I let off. Then it just goes back to the right rpms at driving speeds... Is this a hard fix and what would I need to do?

 

[1990laserrsred]

mine was doing the same thing. Your noise filter is probably bad. I did the noise filter bypass and now my tach works pretty well, unless i push it really hard. The only real fix i know of is to get a new noise filter. I believe the part number is
mb542494, but dont quote me on that, someone else gave me that part number.

 

[19Eclipse90]

Is the noise filter body grounded, i.e., bolted, to the intake manifold or intake manifold (stay) support bracket?

 

[Wanagofast]

Alright cool thanks guys I might end up getting it then!