90 throttle body

[tqmx1]

On the 90 TB does it take a different gasket from the 91/94 units? My BISS ajustment has zero effect, and yes the timing pin and also pin 10 under dash are grounded so somthing is blocking the blead.

This has got to be simple but slaving over a hot engine is getting old!!

 

[spoolin90]

I am 90% sure that a 90 tb does take a different gasket then 91-94

 

[tqmx1]

I got it sorted after pulling the TB and replaceing the gaskets found the BISS pasages full of crap and slime. Carb cleaner and a small bottle brush made it bright and shiny

I wish all fixes were that simple.