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Discussion Starter · #1 ·
looking for info about serve motors on these F7's
getting an error around 7K that suggests the servo motor is bad, both valves are free, both cables are good and measure the same length and within spec. the motor turns when tested with 12 volt powersupply.
what other tests can i perform to find error, where does the servo motor get the signal to open the valves, form the ecu? is there some parts of the stator that need to be checked for faults?
any info is helpful, thanks
 

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Try changing your voltage regulator there is a separate dc circuit in there with a diode for the powervalves, seen a few go bad including mine.
 
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