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2007 Buick Rendezvous CX FWD 4dr *Ltd Avail*

2007 Buick Rendezvous
Trim Info:
Front Wheel Drive, 4 Door, 2WD Sport Utility Vehicle
19 mpg city / 26 mpg hwy
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November 8, 2012, 2:59 pm

Stan W
 

Question: car won't start first thing in the morning

With this car the first thing in the morning it won't start. I can take a piece of ground wire and touch it to the negative terminal and the ground and it usually will start right up and will crank fine the rest of the day. The battery is only 5 months old and it's been tested 3x and was fine. I've replaced the ground wire 2x also. Just a nagging problem that I can't seem to pinpoint.


November 20, 2012, 5:16 pm

Elizabeth K
Expert Mechanic

That sounds weird, have you done a voltage drop test on the starter and battery circuits? Here is some information on what that is and how the test is done. When you have some measurements of your circuit, I think the problem will reveal itself more clearly:
http://www.autotechnician.org/starter-voltage-drop-test-explained-in-plain-english/


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