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S40 / V40 '96-'04 General Forum for the Volvo S40 and V40 (Classic) Series from 1995-2004. |
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2002 s40 1.9t Battery Ground Terminal HotViews : 836 Replies : 8Users Viewing This Thread : |
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Oct 22nd, 2017, 06:34 | #1 |
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2002 s40 1.9t Battery Ground Terminal Hot
For some reason my Battery Ground connection gets very hot when I run my head lights. I have cleaned battery terminals, checked ground connections to body and where the ground bolts to transmission and it all looks good. Battery cables look in new condition. Checked resistance between positive post and alternator and it reads 0.10v Also do not know if its normal, but the top of the radio gets very hot also. I found that because I had the Climate control out of the car and just happened to touch the top of the radio housing to move it over.
I would appreciate some feed back! Thanks! Last edited by diggerdude; Oct 22nd, 2017 at 06:35. Reason: nothing |
Oct 22nd, 2017, 10:03 | #2 | |
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Oct 22nd, 2017, 17:28 | #3 |
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Is there any corrosion on the crimp that bolts on the chassis?
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Oct 22nd, 2017, 18:04 | #4 | |
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Oct 22nd, 2017, 19:28 | #5 |
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The heat will only be present at the site of the high resistance, so its either the cable where it goes into the connector, the connector, or the battery post itself, it cant be anything else, if it were either the cable lower down or the other end of the cable where it bolts to the body then that's where the heat would be, if it were me id change the cable and connector at the same time just to be safe.
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Oct 22nd, 2017, 20:08 | #6 |
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Oct 22nd, 2017, 20:09 | #7 | |
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Oct 23rd, 2017, 00:18 | #8 | |
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Changing Positive Battery Cable
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Oct 23rd, 2017, 07:13 | #9 |
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Copper is a real good conductor of heat, so if one end gets hot, it's possible for the cause to be that the cable was heated up by a poor connection at the other end.
Once you find the real hot spot, remove the cable (After switching off unless you like alternator jobs) and fill the inside of the terminal with solder. You will need to use a small blow lamp (Or the gas cooker) to get the terminal hot enough to soak up the solder. Do both ends and the clean up the connection site. No need to replace the cable or connectors.
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