SlayNeo Posted March 18 Share Posted March 18 Currently, I am endeavouring to repair my vehicle (now that I am able to unlock the door...). When I loaned it to a friend, the vehicle would not restart at a gas station. It was seen that the nut and the terminal of the post on the solenoid of the starting motor had been detached, resulting in the loss of the starter motor cable. By relocating it to its intended position, I successfully started the car's ignition. I returned home by driving, half recharging the battery, and replacing the solenoid on the starting motor. It is worth noting that a prior starter of the same brand had unexpectedly malfunctioned but still had a functional solenoid. Upon starting the vehicle, I posited that engaging in vehicular movement would facilitate the completion of battery charge. However, the luminosity of the lights decreased, the steering became very weighty, the battery light illuminated, and the vehicle barely managed to return. Currently, the vehicle is unable to begin its operation. It is likely that the alternator is the source of the issue. However, I am curious about: Q1. Is it possible for a deteriorating alternator to damage starting motors, resulting in the shearing of the copper post on the solenoid? The alternator on my automobile is a smaller Denso 105 amp. The larger 110 Bosch component was supplied to me. According to realoem.com/bmw, it is necessary to replace the 3-pin connection to the alternator with a 2-pin cable, as well as modify the cable connecting the starter to the alternator. Question 2. What is the recommended course of action: to wait for a Denso 105 tiny 3 pin replacement or to purchase the cables and switch to Bosch? An error was committed by a corporation, resulting in the receipt of a second Bosch alternator that seems to be in excellent condition, although being secondhand. Acquiring secondhand cables from eBay will need around the same amount of time as obtaining a Denso cable. Thank you for any assistance. Link to comment Share on other sites More sharing options...
Notef Posted March 18 Share Posted March 18 A depleted battery may cause harm to the alternator, while a malfunctioning alternator can render the battery ineffective. Both options will result in the starter breaking into fragments. Link to comment Share on other sites More sharing options...
SlayNeo Posted March 18 Author Share Posted March 18 That is logical. I was attempting to establish a correlation between two entities that may have fortuitously experienced failure simultaneously. Link to comment Share on other sites More sharing options...
VibrantShin Posted March 18 Share Posted March 18 If the alternator fails to sufficiently charge the battery, the starter will operate on lower amps required for rotation. Consequently, if the starter is unable to spin at a sufficient speed during the initial start-up, it can be considered a dead short. Over time, the low amps from an uncharged battery will cause damage to the armature of the starter, specifically the bushes, resulting in overheating due to insufficient rotation. Therefore, this is a circumvented method. Link to comment Share on other sites More sharing options...
SlayNeo Posted March 18 Author Share Posted March 18 Thank you, everyone. Fascinating and rational. Link to comment Share on other sites More sharing options...
Istairde Posted March 18 Share Posted March 18 I would adhere strictly to the original equipment manufacturer (OEM) specifications for the alternator. Additionally, it is important to note that a malfunctioning battery has the potential to cause damage to the DME. If there is any uncertainty about the battery, it should be replaced with the appropriate one, such as an AGM for stop start. Link to comment Share on other sites More sharing options...
SlayNeo Posted March 18 Author Share Posted March 18 Thank you. What is the definition of DME? Link to comment Share on other sites More sharing options...
Istairde Posted March 18 Share Posted March 18 The ECU is in German. Link to comment Share on other sites More sharing options...
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