Issues with my Volvo - Team Camaro Tech
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post #1 of 5 (permalink) Old Nov 5th, 13, 05:34 PM Thread Starter
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Join Date: Dec 2001
Location: The Mighty Midwest
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Issues with my Volvo

I have a 1992 volvo 240 thats acting very strange....

While driving home today, all the lights on the dash started to light up. They werent fully lit, only half-way and only lit fully as I accelerated. At full stop the lights went out. With the engine running, I broke a rule and tried something that I know was a not the best decision..

I took the negative battery cable loose from the battery while it was still running to see if the alternator was the problem. I know this is not good practice because I could easily blow the diode inside, but I took a chance anyway and the car kept running so I believe the alternator was good.

The car starts right up very easily so I know the battery is also good..

I also checked all the fuses and none of them appear to be blown...

What could be causing this? Please respond

When you buy an American car, you provide work for a man and his family for three months. -Jay Leno
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post #2 of 5 (permalink) Old Nov 6th, 13, 03:23 AM Thread Starter
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Re: Issues with my Volvo

Anyone?????

When you buy an American car, you provide work for a man and his family for three months. -Jay Leno
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post #3 of 5 (permalink) Old Nov 6th, 13, 05:07 AM
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Re: Issues with my Volvo

My Veterinarian has a '94 and, like yours, is an electrical challenge in keeping running.

The best fix I found is ground the alt case to the battery negative post with 8 AWG wire.
Yes, the case is isolated on its bracketry, but if you look, you will find a ground lead from the case stud to the bracket. Using the DMM in measuring resistance from alt case to neg battery post, there was 10 ohms, not a straight low resistance path.

Also, at the same time, I ran an 8 AWG wire from the alt BATT stud to the positive battery post. I also found 5 ohms of resistance in this path.

Overall, the electrical system gained better turn on and performance of the alt, it is now instantaneous rather than rev the engine up to 4000 rpm to 'turn' on the alt, and gained almost a volt overall.

Another fault I found was the ign switch - poor connection for the warning lights power.
And another fault was a burnt copper run on the inst cluster board not passing battery voltage to the warning lights - had to solder in a wire from the connector to the actual run - low watt solder iron - 25 Watt.

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post #4 of 5 (permalink) Old Nov 10th, 13, 12:03 PM Thread Starter
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Re: Issues with my Volvo

Thanks

When you buy an American car, you provide work for a man and his family for three months. -Jay Leno
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post #5 of 5 (permalink) Old Nov 10th, 13, 07:21 PM
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Re: Issues with my Volvo

check in on the "brickboard" forum

kevin p...................
1972.5 Camaro!
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