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check that the connections have all been made correctly, that no wires have been left disconnnected. There should be some power from the battery surely? iF THE VEHICLE WAS WORKING FINE BEFORE THE ALTERNATOR CHANGE APART FROM NOT CHARGING VERY WELL, IT SHOULD WORK AFTER THE ALTERNATOR CHANGE. iS THE BATTERY FULLY CHARGED?
Sounds like your alternator went out or not making good connection at the battery terminals, preventing the battery from being charged. If the battery does not charge, you will use up the battery energy to maintain the vehicle running UNTIL you deplete the battery. the more accesories you have on, the faster it discharges till the point of killing your ignition on your engine. You definitely have a charging issue, more than likely, your alternator went out.
CHECK BATTERY VOLTAGE WITH TRUCK IDLING.SHOULD BE 13.5 - 14.5 VOLTS. IF NOT ALTERNATOR NOT CHARGING BATTERY.IF ALTERNATOR NOT WORKING TO KEEP BATTERY CHARGE.THE TRUCK WONT RUN RIGHT.YOU PCM,CANT FUNCTION AND CONTROL ALL THE ENGINE CONTROL SYSTEMS.YOUR FUEL SYSTEM , SPARK SYSTEM NOT GOING TO WORK IF BATTERY DONT HAVE POWER AND ALTERNATOR NOT WORKING. CHECK ALTERNATOR POWER FEED WIRE AND VOLTAGE REGULATOR WIRES AND CHECK ALTERNATOR FUSE.MAKE SURE ALTERNATOR GETTING GOOD 12.6 VOLTS FROM BATTERY.MAKE SURE BATTERY FEED WIRE NOT BROKEN.
Take a battery that has a good charge on it or 12 volts put it in and start it then take a multimeter and put the red lead on to the power lead on the back of the alternator and ground the black lead.It should read between 13-14.5 volts anything more or less replace alternator.If alternator checks out ok check battery voltage after charging it.Must have at least 12-12.6 volts anything less replace battery.
If the car is running and hasnt died or had any hard starts you probably just have a belt tensioner or pulley problem. You can read the charging voltage off the battery with a multimeter and should see a a change from ~12 volts to about 13-14 volts.
I had the exact same problem with my vehicle...turned out to be a bad alternator. the car had been riding on pure battery power because alternator failed. Eventually the battery had 0 power left and produced the effect you are talking about where you push gas while in gear , and the transmission will slowly move the car but no power. I had alternator replaced and car is fine. Make sure you get battery fully charged with alternator(the battery charging should not cost anything)
as soon you remove the cable the cae dies alternator not charging you drove untill battery empty and it dies if you put a new battery without changing the alternator it gonna work untill there no more power in the newbattery cheers pierre
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