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Chevrolet Lumina Minivan Forum : “my 1995 lumina van has the 3.8 engine why does it stall and de charge? at 70mph ...”
my 1995 lumina van has the 3.8 engine why does it stall and de charge? at 70mph or stopped?
the amm meter will drop to a decharge some times even stalling the engine no matter what the rpm's some days it will run like a champ then some days it will dye 5 times before i get out the driveway ive changed the obvious and had it to a dealer the computer cant find any problems it ALWAYS starts right back up what in the world could cause this and where do i start if its some kind of short? im lost!!
By "the obvious" i suppose you mean the alternator? That is the first place i would look. If the alternator has been changed, and the problem is not any different, then I would look in 2 other places. First, check to see that the battery cables are clean and tight. Chevrolet uses a side-post battery that hides corrosion pretty well. Take the cables off the terminals, clean the contact points, and firmly tighten the cables. Make sure that there is NO powdery white or green residue between the battery and the cables.
Next, I would check the wiring harness under the hood for damaged wires. The best way to do this is to start the engine, then methodically work your way around the engine compartment wiggling all the wires and lightly tugging on all wiring connectors. This will help you find a bad wire or faulty connection.
Since you stated that the problem is intermittent, it sounds like a loose connection somewhere in the wiring. Try to find ANYTHING that ties the stalling episodes together. Rain? Engine temp? Bumps in the road? Anything that you can find that makes the problem more repeatable will make it easier to find and fix.
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