Negative Earth Cable
Posted: Thu Nov 07, 2013 7:59 am
Last week car would not start so called the RAC out who said it was a low battery and possibly a lose fan belt causing the alternator to discharge the battery. He made adjustments making sure it was secure.
He jump started the car and it did run smoothly.
Bought a new battery and 1 day later the same thing happened. I checked the fan belt but it wasn't squeaking or lose and it had only been fitted in July this year.
I thought its either the battery (which would be a 1% chance as it was new), the starter Solenoid or the starter motor.
I started with the battery and took it back to the supplier. He tested it and came back to the sales desk with a new one, when I asked was the other one faulty he wouldn't really commit to anything just saying that he wouldn't supply me with a replacement if he wasn't 100% happy with the one I brought back!!!
I ordered a new starter solenoid from David Manners group and we got talking about the problem, he said to check the negative earth cable to see if the contacts were clean and rust free as this can cause the battery to act like its flat if contacts are not clean.
To cut a long story short I did not change the starter solenoid as the previous owner said it was only a few years old, and looking at it, it was the newest mechanical part in the chassis.
I took the negative earth cable off and low and behold it was corroded and rusted. I bought a new Lucas cable and cleaned up the contact point on the car body. Its been a week now and it is starting up and running fine.
I wonder if this corroded cable was the cause??
Anyway I now have a spare brand new Lucas solenoid for my spares collection.
Have a good week.
Mark
He jump started the car and it did run smoothly.
Bought a new battery and 1 day later the same thing happened. I checked the fan belt but it wasn't squeaking or lose and it had only been fitted in July this year.
I thought its either the battery (which would be a 1% chance as it was new), the starter Solenoid or the starter motor.
I started with the battery and took it back to the supplier. He tested it and came back to the sales desk with a new one, when I asked was the other one faulty he wouldn't really commit to anything just saying that he wouldn't supply me with a replacement if he wasn't 100% happy with the one I brought back!!!
I ordered a new starter solenoid from David Manners group and we got talking about the problem, he said to check the negative earth cable to see if the contacts were clean and rust free as this can cause the battery to act like its flat if contacts are not clean.
To cut a long story short I did not change the starter solenoid as the previous owner said it was only a few years old, and looking at it, it was the newest mechanical part in the chassis.
I took the negative earth cable off and low and behold it was corroded and rusted. I bought a new Lucas cable and cleaned up the contact point on the car body. Its been a week now and it is starting up and running fine.
I wonder if this corroded cable was the cause??
Anyway I now have a spare brand new Lucas solenoid for my spares collection.
Have a good week.
Mark