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New Engine Fault Codes after mechanic repair :(


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I just had my 1998 993 Cabriolet worked on by a local Porsche mechanic to fix a broken shift linkage.   The engine had some leaks as well which we had spoken about a year earlier.    I decided to have them repaired and since the engine was partly taken apart, they changed the ignition wires as they were the original wires and replaced the belts.  


After 50 miles on my first highway trip since the repair, the check engine light came on.   I hooked up my Durametric and pulled the following codes:


107 - Supply Voltage

169 - IACV Make Winding

168 - IACV Break winding

35 - Oxygen Sensing range 1 (cylinder 4-6)


I reset the codes, re-started the engine let it idle for about 5 minutes - the codes stayed off.


Is it OK to drive the car in this condition or is it a sign of some bad stuff going on?


Any insight into why these codes would pop after such a repair above?


Any help would be appreciated.


Thanks - Steve

Edited by slaskowski
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