Hi there I have this problem with my Astro, it would start and them abruptly stop, even when I'm driving (not good). The Alternator was test good, the fuel pump ok, the battery new. I was told by a tech the engine is ceased up?
That puzzles me/ How can it be ceased up if it starts them shuts down.
When it shuts down all the power goes and I have to get a jump for it to start again?
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Get out your volt meter and check the battery voltage, should be about 12 volts, then turn the key and see how far the voltage drops. If it drops below 9 volts or so, you probably need a new battery. Sniff around the vents of your alternator around fuse box, see if you can locate what actually fried..would suspect the alternator if this happened after driving the truck. The alternator charges the battery as you drive. If it is not functioning the engine will drain your battery until the vehicle dies, and probably wouldn't start even with a jump. Not real sure how to test the alternator without the truck running. Running voltage should be around 14 volts with a properly functioning alternator.
There are a few different things that can cause your problem. When the problem is occurring, disconnect the alternator plug, start the engine and measure voltage with a voltmeter. Connect a test light to 12V, reconnect the alternator connector and back probe the brown wire with the test light. Check to see if the alternator charges else, replace the alternator. Also, you may have a faulty instrument cluster. If you need more help on how to repair your alternator I would suggest checking out this sites HowTo section http://www.buyautoparts.com/howto/
alternator could be problem if battery volts are low.have alternator tested with engine idling should have 13.5 - 14.5 volts at the battery.check alternator drive belt tension.if alternator is faulty that will cause you to lose power steering because if equipped your vechicle has the electrical power steering need electric power from good strong battery and alternator.if alternator fails power steering will also fail.
If the battery symbol stays on on your dash, it is the alternator. I had a 91 Astrovan and the light was blinking and then finally stayed on. Talked to a mechanic at Pepboys and he said that was a bad diode in the alternator. Also, make sure that your battery cable is good and clean.
Have entire starting and charging systems inspected and tested. Many components can cause these symptoms, poor cables (corroded), poor connections to battery (corroded), weak battery (old), tired starter. Alternator will not charge the battery properly if connections or cables are in poor shape. good luck
1. Possibly your battery is on its way out.( Heavy Discharge Test will confirm this )
2. Your charging system is poor, ie:- Alternator belt is loose or the alternator is on way out, or you have a bad connection to the alternator.
Most usually its a loose alternator belt.
Good Luck !
Sounds like the auto shut down relay. Located somewhere in the front grille/bumper area. Relay triggers on impact to shut down all power in order to prevent fires etc. Great idea but can cause exactly the frustration you are having if you don't know it's there!!
Hi ' If you changed the battery and alternator,
Check the voltage at the red wire on the alternator. if there a less than 12 volt.
Check the fuse link, that goes in the starter positive bolt.
If the fuse is bad replace and recheck the charging system.
IF charging normal. good.
If not, che the fuse in the fuse box, "" cluster".
If the fuse is blow out, replace. and check again.