Quote:
Originally Posted by xxxJohnBoyxxx  Mine drops in the low 10 volts when cranking but no start issues.
Are you running after market coils?
Make sure you check your head temp sendor cause it sounds to me like your car is getting too much enrichment on hot start which would be the head temp sendor. ***The coil low voltage issue would cause issues with cold starts too.***
Another thing maybe a bad starter... check the voltage on a cold start and if it is much higher then your starter is bad and drawing too many amps when it is hot. I've had a bad starter when it was hot it would draw big amps due to a warped armature this was not a BMW but can happen to any starter. If the starter has low voltage on a cold start and starts the car fine then you need to go to my head temp sensor therory. |
my start is about 3 weeks old its oem .2 last things im going to try there are to sensor on the head one is cold start injector already changed then there is the hot temp sending unit i dont think that matter but im going to change it . 2nd new coils cause one set is eom but used 2nd set is aftermarket but older could have went bad ..i noticed all coils read .6 ohms cold but when i test them hot the jump from .7-8 -9 ohms never a steady # back in forth from .7-.8 . 9 could 2 sets of coils be bad ... if that dont work tracing wiring into dash and ignition cylinder.