Need a repair manual for my 1998 alfa romeo 156

Try this link.

https://www.google.com/search?q=Workshop+manual+alfa+romeo+156+v6&rlz=1C1AVFC_enGB797GB798&oq=Workshop+manual+alfa+romeo+156+v6&aqs=chrome..69i57j0l2.628j0j7&sourceid=chrome&ie=UTF-8

go to the given link from where you will get the diagram easily along with service and repair manual http://toolsnyou.com/

mate you're dreaming.

After changing my headunit the instrument cluster dash light and gauges have stopped working! The car said no connection go to dealer fuel pressure low and engine management something. Car starts n drives but all electrics including central locking. It's a Alfa 156

On this website, you find fuse box diagram for Alfa Romeo 156 (2003 - 2006)

https://www.autogenius.info/alfa-romeo-156-fl-2003-2006-fuse-box-diagram

an air leak would weaken the mix of fuel to air so giving you better fuel efficiency but a poor power output.
was my last answer not to your liking, re **** fuel consumption on all fiat/alpha cars.but it is true, ask any owner........14.7 average mpg.......£205 road tax.....(tax it for a year and quadruple its value...)

where is the fuse box on a alfa romeo 156.year 2001

I have in the past ordered CD/DVD based manuals from these guys for my Alfa Spider:
http://www.highwoodalfa.com/0443c145-2a09-46dd-ab8f-4985ebed8c50-9.html
Seemed to do the job.

Left foot braking technique shold solve your problem!

reset ecu. turn ignition on. leave it for 90 seconds. turn it off and leave it for 90 seconds. start and run engine at idle for 15 minutes. dont touch the accelerator during processs