I’ve been having a problem with my 1990 325ic where it is breaking up at 4,000-4,500rpm. Acts like it’s hitting a rev limiter, drives fine otherwise. Changed cap, rotor, wires, plugs and no change.
I decided to pull the AFM and did the voltage test. Voltage seems to climb normally until the last 2-3% of travel in the flap. At about 97-98% I get 7.5V while at 100% I get 5.2V. It seems that the higher voltage lines up with a line across the carbon board and when the door goes passed that is when it drops. Wondering if this is how it normally functions or if something is wrong with my AFM.
Essentially — .43V——>7.4V—>5.2V
Any help is much appreciated!!
I decided to pull the AFM and did the voltage test. Voltage seems to climb normally until the last 2-3% of travel in the flap. At about 97-98% I get 7.5V while at 100% I get 5.2V. It seems that the higher voltage lines up with a line across the carbon board and when the door goes passed that is when it drops. Wondering if this is how it normally functions or if something is wrong with my AFM.
Essentially — .43V——>7.4V—>5.2V
Any help is much appreciated!!
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