Afm Opened Up...does It All Mean ?

[bondyshambles 23 1 Cars]

Hi there.....I have a Bosch airflow meter which i took off my car and changed for another unit. It didn't seem to make that much difference to my problem (the usual dodgy tickover and hunting problems). I have took the top off (looks like its been done before and resealed) and saw lots of weird and wonderful things inside. I noticed that there is like a set of contacts which actually meet together, a spring mechanism that has a needle that seems to run across a pcb board and a dial/cog that looks fixed by a spring. Just wondering should contacts be touching and should the needle be scrapping across the pcb.

 

 

 

 

 

[Slo 283 1 Cars]

Looks perfectly normal to me, the sweeping brush contact is the fuel regulator, more air goes in the more the meter opens up and more fuel is injected