charging issues
05-26-2015, 06:48 AM
#1
charging issues
My father in law has a 2000 max. he can drive it for about 20 minutes and it drains the battery. we took the alternator off and had it checked at orielly's and autozone. the alternator checked out fine. he had broke the belt tensioner, so in order to get tension we have to push the pulley down and tighten it up. when we did this sunday the belt had only about 1/2" of play. and once again the battery is being run down. in my eyes it seems that the alternator is not keeping the battery charged up. but since it tested out good i'm kind of lost. any help would be appreciated.
by the way this is a reman alternator that was replaced about 2 years ago.
by the way this is a reman alternator that was replaced about 2 years ago.
05-26-2015, 08:41 AM
#2
There are 2 fuses for you to check.
In the fuse block under the hood by the battery is a 10 am fuse. The label on the cover is "ALT.S".
The other fuse is in side the car in the dash just above the hood release lever. This is a 10 amp fuse and the label calls it "meter". It is in the bottom row, 2nd from the right end.
Normally when you have a charging problem, the BRAKE and BATTERY dash lights are on. Are they lit up?
BTW, a half inch of belt deflection is TOO much. Deflection in the belt should be measured between the crankshaft and the a/c compressor. The deflection should be .2 inch.
In the fuse block under the hood by the battery is a 10 am fuse. The label on the cover is "ALT.S".
The other fuse is in side the car in the dash just above the hood release lever. This is a 10 amp fuse and the label calls it "meter". It is in the bottom row, 2nd from the right end.
Normally when you have a charging problem, the BRAKE and BATTERY dash lights are on. Are they lit up?
BTW, a half inch of belt deflection is TOO much. Deflection in the belt should be measured between the crankshaft and the a/c compressor. The deflection should be .2 inch.
Last edited by DennisMik; 05-26-2015 at 08:46 AM.
05-29-2015, 11:00 AM
#4
Once yo get the belt tensioned correctly and have known good fuses, get a voltmeter and check the voltage while the engine is running.
It should be 14.2 volts, give or take a tenth. When you turn on electrical things, such as everything, the voltage should still be the same and that is at engine idle.
It should be 14.2 volts, give or take a tenth. When you turn on electrical things, such as everything, the voltage should still be the same and that is at engine idle.
06-03-2015, 04:51 PM
#5
Fuses check out good. New tensioner on. Grounds are good. Battery reads at 13.7 car running at 1500rpm. Under that rpm car dies. Checked the voltage off the alternator and got 13.9. Not sure where else to look.
07-16-2015, 08:30 AM
#7
we found the problem. the crank pulley was coming apart when we were checking the voltage and it fell apart last week. replaced it last night and now it's charging like a champ
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