300E Start gremlin
Hello there.
I have a weird new gremlin to try to figure out. My car, 1990 300E 4matic, has a new habit. It wont start. Then it will. Then it wont. Sometimes 3 successes in a row, then nothing again. When it starts it does so without hesitation, then you turn it off, key all the way to '0' position, turn it to crank it over again and the starter just clicks. Try it again and no problem. Then try again and nothing but 'click'. The battery is fairly recent and strong, so maybe something in the starter sequence is glitching? Thanks in advance a Season's Greetings! |
Start by cleaning the battery terminals.
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Cheers |
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I should say that the power in the car seems real strong, lights, radio and instruments are 'normal', whether the starter clicks or works normally. |
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The problem is they get a poor comection and as soon as there is a Demand for high current flow [ such as starter activation].the connection breaks... ..but that bad connection can be at a ground, in the starrter , etc....we just start at the pattery b/c that is where the power source is and correded cable ends are common. A trick is to put the headlamps ON as you try the starter..if the lamps go out when the starter clicks, the terminals are suspect ..if they stay bright and the starter still clicks , the starter solinoid or starer are suspect. ..and other trick is to use a set of jumper cables , but just use the Black one ..hook one end to the battery neg and the other to the engine block...that gets you a good gound and if that solves the problem, then you have a bad/poor ground cable ... |
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So I used the jump cable between the battery neg and the frame, and lo and behold it started each time. But guess what...after the jump cable came off, it started every time as well! So what ever's going on, it seems to be at the battery... Thanks! |
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