curious tach behavior- 4kqT

[Fred no]

Hi,
   this wont help but i have the same problem as you... so i too have 
connected the tach signal to the ignition works super, funny thing is i 
never firgured what the problem was, mine would go up to 3000 before 
dropping to 0.I tought it was rpm sensor or there was a fault or sumthing: 
too much boost or pingning guess not,the check engine light doesn't come on 
and there's no fault codes.
Wonder what's different on the 5000 turbo or missing from...



Audi 4000s 2wd 4:11 turbo
Audi 87.5 ng
Audi CQ90

All full of things to repair!
For sale Audi 50002wd turbo tranny 3spd full ok tested no slip 212km and 
rising on last run (had to stop car had no brake booster or power 
steering)In Quebec region.

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